Study Says China’s Emissions May Have Already Peaked

The Nicholas Institute for Environmental Policy Solutions at Duke University

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As part of the Paris Agreement—a global treaty that aims to limit global warming to well below 2 degrees Celsius above preindustrial levels and to pursue efforts to limit that increase to 1.5 degrees Celsius—China pledged to peak its carbon dioxide emissions by 2030. A new study in the journal Nature Geoscience suggests China’s emissions peaked in 2013 and have declined in each year from 2014 to 2016.

“The decline of Chinese emissions is structural and is likely to be sustained if the growing industrial and energy system transitions continue,” said Dabo Guan, a University of East Anglia climate change economics professor and lead author. “China has increasingly assumed a leadership role in climate-change mitigation.”

The study suggests that slowing economic growth and a decline in the share of coal used for energy has aided in the rapid decrease in China’s rising emissions. These changes in industrial activities and coal use, along with efficiency increases, have roots in the changing structure of China’s economy and in long-term government policies, in particular, creation of China’s nationwide emissions trading scheme.

The policy context and initial program design of that scheme is reviewed by my colleague, Billy Pizer, a faculty fellow at Duke University’s Nicholas Institute for Environmental Policy Solutions, in an article in the journal AEA Papers and Proceedings. It highlights important concerns, discusses possible modifications, and suggests topics for further research.

FERC Rejects PJM Capacity Market Proposals

The Federal Energy Regulatory Commission (FERC), in a 3–2 decision, rejected two proposals filed by PJM as well as a proposal filed by a group of generators operating in PJM’s footprint about how the wholesale electric capacity market should handle state subsidies for power generation. FERC did, however, find that the PJM’s existing capacity market rules are unjust and unreasonable and outlined a framework for a new rule.

PJM, which oversees the grid in parts of the Mid-Atlantic and Midwest, operates a capacity market that allows utilities and other electricity suppliers to procure power to meet predicted demand three years into the future in order to ensure grid reliability. The grid operator and some power producers have argued that subsidized generators are entering into PJM’s capacity market at prices below their actual generation costs, lowering overall market prices and potentially forcing some competitors to shutter their operations.

The order rejects both of PJM’s proposals because FERC found that “they have not been shown to be just and reasonable, and not unduly discriminatory or preferential.” But FERC was “unable to determine, based on the record of either proceeding, the just and reasonable rate to replace the rate in PJM’s Tariff.”

FERC then proposed a framework for a replacement rule—resource offers that are deemed subsidized would be subject to an expanded Minimum Offer Price Rule (MOPR) with few or no exceptions, so as not to artificially lower capacity prices. On the other hand, PJM would have to expand the ability for utilities to purchase less from PJM’s capacity market so they wouldn’t be forced to buy capacity to comply with state policies and then procure a duplicate amount of capacity from PJM’s market.

In PJM’s April filing to FERC, PJM asked FERC to decide between two proposals to deal with the issue of how to address potential pricing impacts of state energy programs in its capacity market and to identify which aspects of the proposals need to be revised. Generators subsequently filed a complaint at FERC, alleging that the PJM capacity rules violate the Federal Power Act and proposing their own solution. But in FERC’s order, filed late on June 29, FERC rejected PJM’s two-part capacity repricing scheme and revisions to the MOPR that aimed to bump up capacity offers into the market from new and existing resources receiving state assistance, subject to certain proposed exemptions. It also rejected the generators’ proposal for a MOPR for a “limited set of existing resources.”

PJM, its stakeholders, and other commenters now have to answer FERC’s questions about how to flesh out FERC’s proposed replacement rule framework. Initial comments are due within 60 days and reply comments are due within 90 days of the publication date of the FERC order in the Federal Register.

Study Zeroes in on Hard-to-Decarbonize Sources

About a quarter of global carbon dioxide emissions from fossil fuels and industrial sources come from hard-to-cut sources, according to a study published in the journal Science.

The authors focused on long-distance shipping and transportation, on cement and steel production, and on provision of a reliable electricity supply, that is, the need, given the variable nature of renewables, for climate-neutral ways to increase output when needed. The demand for these services and products is projected to increase over this century, the study said, allowing absolute emissions from them to grow to equal the current level of global emissions.

“If we want to get to a net zero energy system this century, we really need to be scaling up alternatives now,” said lead author Steven J. Davis of the University of California.

What are those alternatives? Some analyzed by the study are the synthesis of energy-dense hydrogen or ammonia-based fuels for aviation and shipping, new furnace technologies for concrete and steel manufacture, and tools to capture and store hydrocarbon emissions. But deploying these technologies will be costly, say the authors, who also point to another obstacle: the inertia of existing systems and policies.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions

Study Says Meeting Paris Agreement Goals Won’t Prevent Aridification

The Nicholas Institute for Environmental Policy Solutions at Duke University

A study published Monday in the journal Nature Climate Change suggests that more than a quarter of Earth’s land will become significantly drier even if the world manages to limit warming to the Paris Agreement goal of less than 2 degrees Celsius above pre-industrial levels. Limiting the temperature rise to the agreement’s more ambitious goal of 1.5 degrees Celsius could significantly reduce the amount of land affected.

“Our research predicts that aridification would emerge over about 20–30 percent of the world’s land surface by the time the global mean temperature change reaches 2 degrees C [Celsius],” said Manoj Joshi, study co-author from the University of East Anglia in the United Kingdom. “But two-thirds of the affected regions could avoid significant aridification if warming is limited to 1.5 degrees C.”

According to the study, the regions that would most benefit from keeping warming below 1.5 degrees Celsius are parts of South East Asia, Southern Europe, Southern Africa, Central America and Southern Australia.

The study authors used projections from 27 global climate models to identify the areas of the world where aridity will substantially change when compared to current year-to-year variations. With a temperature increase of 2 degrees Celsius, they found that between 24 percent and 32 percent of the Earth’s total land surface will become drier. At an increase of 1.5 degrees Celsius, only between eight percent and 10 percent of that surface becomes drier.

Aridification could dramatically increase the threat of widespread drought and wildfires. It is also a threat to agriculture, water quality and biodiversity, noted Chang-Eui Park, the study’s lead author from China’s Southern University for Sustainability and Technology.

Park likened the emergence of aridification to “a shift to continuous moderate drought conditions, on top of which future year-to-year variability can cause more severe drought. For instance, in such a scenario 15 percent of semi-arid regions would actually experience conditions similar to ‘arid’ climates today.”

Trump Administration Repeals Proposed Rules for Hydraulic Fracturing on Government Land

One day after a three-judge panel of the 10th U.S. Circuit Court of Appeals declined to reconsider it’s decision to overrule a lower court’s rejection of a proposed Obama-era rule regulating hydraulic fracturing on federal and Indian lands, the U.S. Department of the Interior’s Bureau of Land Management (BLM) rescinded the rule. Under the proposed rule, companies would have had to disclose the chemicals used in hydraulic fracturing, or fracking, whereby pressurized water is pumped underground to break open hydrocarbon deposits to increase well productivity.

The rule had been scheduled to go into effect in 2015, but it was never implemented due to court challenges by energy industry groups and several oil- and natural gas-producing states, which argued the rule was over-reaching and duplicative of state requirements, as well as by environmentalists, who pointed to a need to regulate potential risks to groundwater.

“This final rule is needed to prevent the unnecessarily burdensome and unjustified administrative requirements and compliance costs of the 2015 rule from encumbering oil and gas development on Federal and Indian lands,” BLM wrote in the 26-page final rule.

The move took effect immediately on December 29, skipping the 30-day waiting period often incorporated into rollbacks.

Vogtle Nuclear Project Gets Green Light

Georgia’s Public Service Commission has voted unanimously to allow construction of two nuclear reactors at Plant Vogtle to continue. Plagued by delays and escalating costs, the Vogtle reactors represent the only large-scale nuclear construction underway in the United States since abandonment of two reactors this summer by South Carolina Electric & Gas and Santee Cooper. This week, Dominion Power bought SCANA and assumed these failed South Carolina nuclear project costs.

“The decision to complete Vogtle 3 & 4 is important for Georgia’s energy future and the United States,” said Paul Bowers, chairman, president and CEO of Georgia Power, in a statement. “The Georgia Public Service Commission has shown leadership in making this complex and difficult decision and recognized that the Vogtle expansion is key to ensuring that our state has affordable and reliable energy today that will support economic growth now and for generations to come.”

Co-owned by Georgia Power, Oglethorpe Power, MEAG Power and Dalton Utilities, the reactors are presently scheduled to come online in 2021 (unit 3) and 2022 (unit 4).

The commission attached conditions to its approval of the Vogtle completion, including a lower return on equity for Georgia Power; more money returned to ratepayers; and the possibility of re-examining the project if Congress doesn’t extend a production tax credit for nuclear power past a 2021 expiration date.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Moody’s Warns Cities, States to Prepare for Climate Change Risks

The Nicholas Institute for Environmental Policy Solutions at Duke University

A new report from Moody’s outlines how the credit rating agency will evaluate the impact of climate change in its ratings for state and local bond issuers. The report warns cities and states to prepare for climate change or face increased difficulty maintaining or obtaining higher credit ratings.

Ratings from Moody’s also help determine interest rates on bonds issued by cities to fund roads, buildings and other civic projects. Cities not adequately preparing for climate change, then, may face higher rates.

“The interplay between an issuer’s exposure to climate shocks and its resilience to this vulnerability is an increasingly important part of our credit analysis, and one that will take on even greater significance as climate change continues,” the report notes.

Moody’s uses six indicators to assess exposure to the physical climate change, including hurricanes and extreme-weather damage as a share of the economy, and the share of homes in a flood plain.

Moody’s identifies Florida, Georgia, Mississippi and Texas as the states most at risk for damage from climate change. It says it will assess both a city’s ongoing risk from climate trends and climate shock from extreme weather events such as natural disasters, floods and droughts.

“What we want people to realize is: If you’re exposed, we know that. We’re going to ask questions about what you’re doing to mitigate that exposure,” said Lenny Jones, a managing director at Moody’s. “That’s taken into your credit ratings.”

Mayors Sign Climate Charter

More than 50 North American cities signed the Chicago Climate Charter Tuesday during the North American Climate Summit in Chicago, where former President Barack Obama spoke, calling cities, states and nonprofit groups “the new face of leadership” on climate change.

“Obviously we’re in an unusual time when the United States is now the only nation on Earth that does not belong to the Paris agreement,” Obama said. “And that’s a difficult position to defend. But the good news is that the Paris agreement was never going to solve the climate crisis on its own. It was going to be up to all of us.”

The mayors, who attended the summit hosted by Chicago Mayor Rahm Emanuel, hailed from cities across North America, including Mexico City, San Francisco and Phoenix.

“Climate change can be solved by human action,” said Emanuel (subscription). “We lead respectively where there is no consensus or directive out of our national governments.”

The charter calls for mayors to achieve a percent reduction in carbon emissions at least as stringent as the Paris Agreement; to quantify, track and report emissions; to support flexibility for cities to take action on climate issues; and to incorporate climate issues into emergency planning, among other provisions.

The charter also calls for cities to work with scientific and academic experts to find solutions. Some mayors have specifically agreed to commitments to expand public transportation and invest in natural climate solutions such as tree canopy and vegetation.

Study: Melting Arctic Sea Ice Will Lead to Increased Drought in California

Scientists have linked rapidly melting Arctic sea ice to warmer ocean temperatures and higher sea levels. Now new research shows it could also reduce rainfall in California, worsening future droughts in the state. By mid-century, according to a study by Lawrence Livermore National Laboratory published Tuesday in the journal Nature Communications, loss of ice in the Arctic and warming temperatures there could drop California’s 20-year median for rainfall by as much as 15 percent.

“Sea-ice loss of the magnitude expected in the next decades could substantially impact California’s precipitation, thus highlighting another mechanism by which human-caused climate change could exacerbate future California droughts,” the study says.

The authors describe a series of meteorological events that lead to formation of storm-blocking air masses in the North Pacific—masses similar to the so-called Ridiculously Resilient Ridge, a nickname given to the persistent region of atmospheric high pressure that occurred over the Northeastern Pacific Ocean that kept rain from making landfall during California’s 2012–2016 drought. Although the study doesn’t attempt to explain that drought, its lead author, climate scientist Ivana Cvijanovic said it could help scientists understand future weather patterns.

“The recent California drought appears to be a good illustration of what the sea-ice-driven precipitation decline could look like,” she said.

Previous studies hypothesized that the North Pacific atmospheric ridge is due to increased ocean surface temperatures and heat circulation in the tropical Pacific. The new study elaborates on that understanding by describing the relation of Arctic sea-ice loss and tropical convection.

The authors say large-scale warming of the Arctic surface and lower atmosphere affects the way heat travels from Earth’s lower latitudes into the Arctic, in turn causing circulation changes in the deep tropics that eventually boost the buildup of a giant high-pressure system, like the Ridiculously Resilient Ridge, off the California coast. In normal winters, high and low-pressure systems alternate. But when there’s a ridge, the wet and wintry Pacific storms instead slide north.

“We should be aware that an increasing number of studies, including this one, suggest that the loss of Arctic sea ice cover is not only a problem for remote Arctic communities, but could affect millions of people worldwide,” said Cvijanovic.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Harvey Shines Light on Issue of Climate Change

The Nicholas Institute for Environmental Policy Solutions at Duke University

Hurricane Harvey made landfall in Texas last week, dumping more than 50 inches of rain in parts of Houston, the fourth largest U.S. city. After drifting back out over the Gulf of Mexico as a tropical storm, Harvey made a second landfall near the Texas and Louisiana border Wednesday. By the time this extreme storm dissipates, damage is expected to be in the tens of billions of dollars.

As news coverage documents large swaths of destruction from flooding and high winds, many are asking whether climate change makes storms like Harvey more likely and more severe.

“Climate is not central, but by the same token it is grossly irresponsible to leave climate out of the story, for the simple reason that climate change is, as the U.S. military puts it, a threat multiplier. The storms, the challenges of emergency response, the consequences of poor adaptation—they all predate climate change. But climate change will steadily make them worse,” writes David Roberts in Vox.

Roberts’ words were echoed by said Katharine Hayhoe, an atmospheric scientist and professor of political science at Texas Tech University.

“The hurricane is a naturally occurring hazard that is exacerbated by climate change, but the actual risk to Houston is a combination of the hazard—rainfall, storm surge and wind, the vulnerability, and the exposure,” said Hayhoe of Houston’s particularly high vulnerability. “It’s a rapidly growing city with vast areas of impervious surfaces. Its infrastructure is crumbling. And it’s difficult for people to get out of harm’s way.”

The Washington Post also points a finger at a warming climate’s effect on storm surge, rainfall, and storm intensity.

Others, like Meteorologist Eric Holthaus, put it more bluntly. He writes in Politico that “Harvey is what climate change looks like. More specifically, Harvey is what climate change looks like in a world that has decided, over and over, that it doesn’t want to take climate change seriously.”

What’s clear is that like Superstorm Sandy and Hurricane Katrina before it, Harvey has reopened the debate over the connection between hurricanes and climate change, and promises to increase climate’s resonance in the political debate.

Harvey is also leaving a mark on the infrastructure of the country’s largest oil and gas firms. Forbes offered a reminder that in 2008, refinery utilization dropped from 78 percent before Hurricane Ike and to 67 percent the week of the hurricane. Harvey has already knocked out 11 percent of U.S. refining capacity and a quarter of oil production from the U.S. Gulf of Mexico as well as closed ports along the Texas coast. The shutdowns are resulting in a spike in gas prices across the United States.

The environmental fallout—escaping gasoline and releases of hazardous gases from refineries—could worsen.

RGGI States Look to Further Reduce Utility Emissions

Nine Northeast and Mid-Atlantic governors last week agreed to move forward with an extension of and additional emissions cuts through the Regional Greenhouse Gas Initiative (RGGI), a state-driven cap-and-trade system to reduce greenhouse gas emissions from power plants.

According to their proposal, the RGGI states―Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island and Vermont―would cap emissions at some 75 million tons in 2021 and decrease those emissions by 2.25 million tons every year until 2030, resulting in a total decline of 30 percent and leading to an overall reduction of 65 percent of emissions since RGGI began eight years ago. A separate provision would allow for deeper cuts, if not prohibitively costly to states.

The group is also proposing changes to the program’s rules, such as adjusting the emissions cap to remove some excess allowances, allowing states to delay the sale of some emissions allowances if they are too cheap and taking steps to mitigate excess allowances. Starting in 2021, an emissions containment reserve, in which New Hampshire and Maine will not participate, would hold back 10 percent of allowances if the price on carbon credits falls below $6 per ton. After 2021, the emissions containment reserve trigger price would increase by 7 percent annually.

After seeking public comments on the proposal at a hearing in Baltimore on Sept. 25, the RGGI group will conduct additional economic analysis and publish a revised proposal. Each of the nine states must then follow its own statutes to implement the new plan.

“With today’s announcement, the RGGI states are demonstrating our commitment to a strengthened RGGI program that will utilize innovative new mechanisms to secure significant carbon reductions at a reasonable price on into the next decade, working in concert with our competitive energy markets and reliability goals,” said RGGI Chairwoman Katie Dykes.

The RGGI auctions permits for utilities to buy electricity produced at power plants that produce greenhouse gases. RGGI officials say those auctions have raised more than $2.7 billion to invest in cleaner energy since 2009.

Program advocates point to several studies suggesting the program’s success, reported the Boston Globe. One by the Acadia Center in 2016 found that RGGI states reduced emissions by 16 percent more than other states, while growing the region’s economy 3.6 percent more than the rest of the country. At the same time, energy prices in RGGI states fell by an average of 3.4 percent, while electricity rates in other states rose by 7.2 percent.

Inside Climate News reported that although other regions have seen lower carbon emissions courtesy of low-cost natural gas, a study by the Nicholas Institute for Environmental Policy Solutions and the Duke University Energy Initiative found the cap-and-trade market was responsible for about half of the region’s post-2009 emissions reductions, which are far greater than those achieved in the rest of the United States.

Tillerson Signals Intent to Remove Climate Envoy Post

In a letter to Senate Committee on Foreign Relations Chairman Bob Corker, Secretary of State Rex Tillerson shared his intent to reorganize, shift, or eliminate almost half of the agency’s nearly 70 special envoy positions. Among the positions in question: a high-profile representative on the issue of climate change.

“I believe that the department will be able to better execute its mission by integrating certain envoys and special representative offices within the regional and functional bureaus, and eliminating those that have accomplished or outlived their original purpose,” Tillerson wrote.

Tillerson goes on to say that the U.S. Special Envoy for Climate Change—in charge of engaging partners and allies around the world on climate change issues—will be removed and that the functions and staff will be moved to the Bureau of Oceans and International and Scientific Affairs.

“This will involve realigning 7 positions and $761,000 in support costs within D&CP from the Office of the Secretary to the Bureau of Oceans and International and Scientific Affairs (OES),” the letter states.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Grid Reliability Study Released as Climate Change Panel Disbands

The Nicholas Institute for Environmental Policy Solutions at Duke University

The U.S. Department of Energy, on Wednesday night, released its electric grid reliability study, finding that the greatest driver of baseload power plant retirements was cheap natural gas followed by flat power demand, environmental regulations and the growing penetration of renewables on the grid.

Requested by U.S. Department of Energy Secretary Rick Perry in April, the study was intended to report on whether the U.S. electric grid can handle the retirement of aging coal-fired and nuclear power plants and the “market-distorting effects of federal subsidies that boost one form of energy at the expense of others.”

It found that “the biggest contributor to coal and nuclear plant retirements has been the advantaged economics of natural gas-fired generation.”

It offers recommendations to boost coal and nuclear. It suggests that the U.S. Environmental Protection Agency (EPA) ease rules for resources such as coal, nuclear and hydropower and that the Nuclear Regulatory Commission likewise ease permitting rules for nuclear plants. It also suggests that the Federal Energy Regulatory Commission (FERC) expedite efforts to reform the way prices are set in wholesale markets and how those markets value reliability. Finally, it recommends that the Department of Energy should prioritize research and development for grid resiliency, reliability, modernization and renewables integration technologies be promoted.

Notably absent from the grid study was any mention of climate change, the focus of a 15-member panel disbanded Friday by the Trump administration. The panel had been charged with helping officials and policy makers evaluate a separate federal report, the National Climate Assessment Report. Its members warned that the move leaves the public to deal with what amounts to a data dump with its impending release.

Established by the National Oceanic and Atmospheric Administration (NOAA) in 2015, the Federal Advisory Committee for the Sustained Climate Assessment included members of government, industry, academia and non-profits. The group was charged with helping evaluate the National Climate Assessment Report, a portion of which [the Climate Science Special Report] was widely publicized in its draft form earlier this month.

The charter for the committee expired Sunday. A note on the committee’s website offers that “per the terms of the charter, the Federal Advisory Committee for the Sustained National Climate Assessment (Committee) expired on August 20, 2017. The Department of Commerce and NOAA appreciate the efforts of the committee and offer sincere thanks to each of the committee members for their service.”

NOAA Communications Director Julie Roberts said “this action does not impact the completion of the Fourth National Climate Assessment, which remains a key priority.”

The Climate Science Special Report is due in its final form in November; the larger congressionally mandated document, the Fourth National Climate Assessment, is scheduled for publication in late 2018.

The National Climate Assessment integrates and evaluates current and projected global climate change trends, both human-induced and natural, and analyzes the effects of current and projected climate change. It has been published three times since passage of the Global Change Research Act of 1990, a law mandating its publication every four years.

Court Directs FERC to Consider GHG Impacts of Pipelines

The United States Court of Appeals for the District of Columbia Circuit, in a 2-1 decision issued Tuesday, found that the Federal Energy Regulatory Commission (FERC) failed to adequately consider the impact of greenhouse gas emissions from burning the fuel flowing through the Southeast Market Pipelines Project when it approved the project in 2016. FERC’s failure under the National Environmental Policy Act to adequately discuss the downstream effects of carbon emissions from natural gas transported through the pipelines in the project’s environmental impact statement was grounds for the court’s vacatur and remand.

Judge Thomas Griffith wrote that FERC’s environmental review “should have either given a quantitative estimate of the downstream greenhouse emissions that will result from burning the natural gas that the pipelines will transport or explained more specifically why it could not have done so.”

Griffith went on to write that “greenhouse-gas emissions are an indirect effect of authorizing this project, which FERC could reasonably foresee, and which the agency has legal authority to mitigate. Quantification would permit the agency to compare the emissions from this project to emissions from other projects, to total emissions from the state or the region, or to regional or national emissions-control goals. Without such comparisons, it is difficult to see how FERC could engage in ‘informed decision making’ with respect to the greenhouse-gas effects of this project, or how ‘informed public comment’ could be possible.”

The project comprises three natural gas pipelines under construction in Alabama, Georgia and Florida that are intended to bring natural gas to Florida to fuel existing and planned power plants.

Trump Denies Coal Exec Plea as EPA Reviews Toxic Waste Limits from Coal Power Plants

As part of a legal appeal, U.S. Environmental Protection Agency (EPA) administrator Scott Pruitt filed a letter Monday with the Fifth Circuit U. S. Court of Appeals in New Orleans in which he indicated that he will seek to revise the 2015 guidelines mandating increased treatment for wastewater from coal-fired power plants.

The rule, originally issued by the Obama administration in 2015, aimed to reduce toxic water discharges into lakes, rivers and streams from coal-fired power plants and coal ash dumps.

In the letter, Pruitt said he “decided that it is appropriate and in the public interest to conduct a rulemaking to potentially revise the new, more stringent Best Available Technology Economically Achievable effluent limitations and Pretreatment Standards for Existing Sources in the 2015 rule that applies to bottom ash transport water and flue gas desulfurization wastewater.”

The 2015 rule has faced some scrutiny, with opponents saying it could lead to the closure of coal-fired power plants and economic harm for small utilities.

Also this week, the Trump administration denied a request by coal industry executives from Murray Energy Corporation and FirstEnergy Solutions Corporation to provide them relief for plants they say are overburdened by environmental regulations and market stresses, by pushing forward a rarely used emergency order protecting coal-fired power plants.

“We look at the facts of each issue and consider the authorities we have to address them but with respect to this particular case at this particular time, the White House and the Department of Energy are in agreement that the evidence does not warrant the use of this emergency authority,” said U.S. Department of Energy spokeswoman Shaylyn Hynes.

The department did not address assertions by Murray Energy Corporation CEO Bob Murray in letters that Trump told him multiple times in July and August that he wanted Energy Secretary Rick Perry to invoke the emergency authority.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

California’s Cap-and-Trade Program Survives Legal Challenge

The Nicholas Institute for Environmental Policy Solutions at Duke University

Last week, California’s Cap-and-Trade Program to reduce carbon emissions was handed a victory when a state appeals court ruled that program’s auction of emissions permits does not constitute an illegal tax because the program is voluntary and the emissions permits have value. In a 2–1 vote, the Court of Appeal for the Third Appellate District upheld the cornerstone piece of California’s climate change policy, siding with the program’s operator, the California Air Resources Board (CARB), by finding that the auction revenues are more akin to regulatory fees than a tax. The court ruled against the California Chamber of Commerce, a tomato processor, and the National Association of Manufacturers, all of whom alleged that CARB lacked legislative authority to create the auctions and that the emissions allowances amounted to a tax that would have required a two-thirds vote of the legislature.

California created the Cap-and-Trade Program as part of its program to meet its targets of reducing carbon emissions to 1990 levels by 2020 and to 40 percent below 1990 levels by 2030. The program requires factories, power plants, and other companies to buy permits to emit greenhouse gases. By putting a cap on carbon emissions and by creating a market for emissions permits, which covered entities can bank and sell if they don’t need them, the program aims to encourage pollution reduction at the least possible cost. Specifically, it allows businesses to determine whether their most cost-effective compliance option is to reduce their emissions or to pay to pollute, a flexibility that figured in the appeals court decision.

“Reducing emissions reduces air pollution, and no entity has a vested right to pollute,” the court wrote. “The purchase of allowances is a voluntary decision driven by business judgments as to whether it is more beneficial to the company to make the purchase than to reduce emissions.”

The court decision frees California to continue holding auctions through 2020 but does not eliminate all the uncertainty that has dampened demand for permits and reduced state revenues that have been used for programs linked to emissions reductions. Although the decision immediately gave carbon markets a boost, an oversupply of permits has kept them inexpensive at roughly $12.50 or $13.50 a metric ton. Experts say that price needs to reach $30 to $40 to properly incentivize new pollution control investments.

Whether emissions permits in a cap-and-trade system should be given away or sold by the government has long been debated by scholars, reports Inside Climate News. California companies had wanted permits to be handed out for free, but California chose to auction them and to use the revenue to help finance spending on energy efficiency and other parts of its climate agenda.

State lawmakers are presently debating whether to extend the Cap-and-Trade Program past 2020 to eliminate any additional uncertainty about the program.

U.S. Power Sector Shrinks Carbon Footprint in Record-Breaking Way

A continuing drop in coal use, along with relatively mild winter temperatures, drove a second consecutive year of reductions in U.S. power sector carbon dioxide emissions, according to figures released by the Energy Information Administration (EIA) on Monday. The EIA reported that those emissions dropped 1.7 percent, compared with the previous year. That reduction was largely attributed to an 8.6 percent drop in coal-related emissions, which was offset by increases in emissions from oil (1.1 percent) and natural gas (0.9 percent). Those figures added up to a record-breaking decrease in the power sector’s carbon intensity, a measure that relates carbon emissions to economic output.

“Overall, the data indicate about a 5 percent decline in the carbon intensity of the power sector, a rate that was also realized in 2015,” the EIA said. “Since 1973, no two consecutive years have seen a decline of this magnitude, and only one other year (2009) has seen a similar decline.”

“These recent decreases are consistent with a decade-long trend, with energy-related CO2 emissions 14 percent below the 2005 level in 2016,” the EIA added.

Whether the trend will continue will depend on several factors. Climate Central reports that utilities’ increasing switch from coal to less carbon-intensive natural gas is not a panacea for climate change, because extraction processes for natural gas emit methane, a greenhouse gas 34 times stronger than carbon dioxide over 100 years. Moreover, it’s unclear how the Trump administration’s push for fossil fuels development will play out. It may only delay the closure of coal-fired power plants slated for retirement if natural gas prices remain low. But carbon emissions could begin to rise again in the United States if demand for electricity and gasoline increases and if the average fuel economy of new vehicles does not increase.

The EIA reported that the only U.S. sector in which carbon emissions increased last year was transportation. Emissions directly from motor gasoline increased 1.8 percent. Notably, overall transportation sector emissions were higher than power sector emissions, a trend the EIA expects to continue until at least 2040.

Gorsuch Sworn in as Supreme Court Justice

After being confirmed Friday by a 54-to-45 vote—following Republicans’ invocation of the so-called nuclear option, which lowered the threshold on Supreme Court nominations to a simple majority vote—Colorado appeals court judge Neil M. Gorsuch took his oaths to be the Supreme Court’s 113th justice Monday. Gorsuch breaks the court’s perceived 4-4 ideological split since the February 2016 death of conservative stalwart Justice Antonin Scalia.

During his federal appeal court tenure, Gorsuch mirrored Scalia’s originalist approach to the law, interpreting the Constitution according to the meaning understood by its drafters. But he could envision his job in more “muscular” terms than his predecessor, according to The Economist. Of particular importance to climate policy is Gorsuch’s evident skepticism of the Chevron deference, whereby judges defer to an agency’s reasonable interpretation of federal laws when the law is ambiguous. The Chevron deference, as a principle, stems from a decision in a 1984 case that Chevron brought against the Environmental Protection Agency regarding its reading of the Clean Air Act. In last year’s Gutierrez-Brizuela v Lynch, notes The Economist, Gorsuch called into question the Chevron principle, writing that it allows agencies to “swallow huge amounts of core judicial and legislative power” and that it “concentrate[s] federal power in a way that seems more than a little difficult to square with the constitution of the framers’ design.” He suggested that it might be time to fundamentally rethink the Chevron principle.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

EPA Budget Cut Priorities Outlined in Internal Document

The Nicholas Institute for Environmental Policy Solutions at Duke University

An internal budget draft shows how the U.S. Environmental Protection Agency (EPA) proposes to meet Trump’s FY2018 Budget submission to Congress, which reduces EPA spending 31 percent.

The memo repeatedly portrays climate as outside the EPA’s core statutory requirements. It focuses instead on funding “core legal requirements,” scrapping 56 programs dealing with scientific research, climate change and education while sending other functions to state and local governments. One of those proposed cuts is to the program responsible for producing new car fuel economy labels and certifying that new vehicles, engines and fuels conform to clean air standards. Dubbed the Federal Vehicle and Fuels Standards and Certification program, it helped to uncover Volkswagen AG’s emissions cheating.

The agency’s budget also proposes to lay off 25 percent of EPA employees.

Asked about the budget in an interview with Fox News, EPA Administrator Scott Pruitt said that the agency expects states to assume a greater role in environmental protection.

“Over the last several years, there has been a lack of commitment to state partnership,” said Pruitt, adding that would change under his tenure (subscription).

But as Greenwire points out, much of that partnership is fueled by federal dollars, and Trump’s proposed EPA budget cuts, if implemented, could undermine Pruitt’s pledge to state environmental regulators.

Sent March 21 by Acting Chief Financial Officer David Bloom, the draft budget was addressed to the heads of EPA departments. They are supposed to provide feedback and explain how they would make the cuts but still fulfill statutory requirements. John Konkus, an EPA spokesperson, said that the agency is “working towards implementing the president’s budget based on the framework provided by his blueprint,” offering little else about the review process surrounding the draft.

Trump’s official budget is scheduled to go before Congress in mid-May.

Following Executive Order, Climate Rule Notices Published in Federal Register

President Donald Trump may not be finished issuing executive orders related to environment and energy, according to Mike McKenna, the former head of the Department of Energy transition team and founder of MWR Strategies.

“I don’t think we’re quite done with the executive orders,” said McKenna, speaking at the Energy Bar Association’s annual meeting in Washington (subscription). He noted that “offshore energy development” and “probably something clarifying where we are going with [the] Antiquities [Act]” could be next.

Last week, Trump signed a long anticipated executive order promoting fossil fuel extraction, greatly diminishing the role climate change plays in U.S. government decision making, and directing the U.S. Environmental Protection Agency (EPA) to review the Clean Power Plan, which sets limits on carbon dioxide emissions from existing fossil-fuel fired power plants.

On Tuesday, notices announcing the review of Clean Power Plan as well as performance standards for        new fossil-fuel fired power plants and oil and gas facilities were published in the Federal Register. That step is the first in the rulemaking process to amend or rescind the rules. The EPA also withdrew its proposed rules for a federal plan to implement the Clean Power Plan. Those rules would have provided a template for states setting up their own regulations to meet the plan’s emissions reductions targets.

After Trump Executive Order, Others Seek to Provide Climate Leadership

President Donald Trump’s March 28 executive order formalizing his commitment to “unwind science-based climate action in the United States” would “relegate the United States to the bottom of the global climate action league,” according to a report released by Climate Action Tracker), a research coalition that rates all major nations on their pledges under the Paris Agreement, which is aimed at holding the global average temperature increase to “well below” 2 degrees Celsius above pre-industrial levels and at pursuing efforts to limit that increase to 1.5 degrees Celsius. The report finds that the order sets the United States on a trajectory to fall well short of its Paris Agreement commitment for 2025: instead of the 13 percent decrease from 2014 levels needed to meet that commitment, U.S. emissions in 2025 and 2030 would be roughly similar to today’s levels. But the report also finds that market pressures will continue the global clean energy transition.

Reacting to Trump’s executive order, which did not address the Paris Agreement, many nations acknowledged a vast investment shift from fossil fuels to clean energy and, notably, China, one of the world’s largest emitters, reaffirmed its commitment to the agreement.

All countries should “move with the times,” said Chinese Foreign Ministry Spokesman Lu Kang. “No matter how other countries’ policies on climate change, as a responsible large developing country China’s resolve, aims and policy moves in dealing with climate change will not change.”

Within the United States, Trump’s order elicited a similar sentiment by some cities and states.

“Climate change is both the greatest single threat we face, and our greatest economic opportunity for our nation,” the mayors of New York, Los Angeles, Houston and 72 other cities wrote in an open letter to the president. “That is why we affirm our cities’ commitments to taking every action possible to achieve the principles and goals of the Paris Climate Agreement, and to engage states, businesses and other sectors to join us.”

The Democratic governors of California, Connecticut, Minnesota, New York, Oregon and Washington, along with five mayors in those states, said in a statement that they would continue to lower carbon emissions despite conflicting policy from the Trump administration.

“Our commitment to limiting global average temperature increase to well below 2 degrees Celsius remains,” said the group. The signatories are members of the Under2 Coalition, a group of 167 cities, states and countries committed to reducing greenhouse gas emissions to 2 tons per capita, or 80–95 percent below 1990 levels by 2050.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Carbon Tax Not on Agenda for Trump

The Nicholas Institute for Environmental Policy Solutions at Duke University

President Donald Trump is not considering a national carbon tax proposal that a group of Republicans discussed in February. A White House official told GreenWire in an e-mail that although the group of Republican leaders visited the White House to discuss their proposal that “the Trump Administration is not considering a carbon tax.”

The plan had called for an increase in the cost of fossil fuels to bring down consumption—suggesting a tax of $40 a ton that would increase steadily over time. Tax proceeds, they state, would be redistributed to consumers on a quarterly basis in what they call “carbon dividends” that could be approximately $2,000 annually for a family of four.

The Hill reports that White House advisors, along with National Economic Council (NEC) Director Gary Cohn, met with the group led by former Secretary of State James A. Baker III.

“Part of the NEC’s responsibility in coordinating economic policy for the president is to listen to a range of viewpoints on various issues,” said Lindsay Walters, a White House spokeswoman. “The Trump administration is not considering a carbon tax.”

Nominee for Supreme Court Sheds Little Light on How He Would Weigh Environmental Issues

The Senate hearing began this week for Judge Neil Gorsuch, President Donald Trump’s nominee to fill the Supreme Court seat left vacant in February 2016 by the death of Justice Antonin Scalia. How Gorsuch may weigh environmental issues is difficult to discern due to his slender case record on energy and climate topics.

“His record is kind of skimpy,” said Peter McGrath, a member of the Moore & VanAllen law firm based in Charlotte, North Carolina. “It’s hard to predict where he might rule.”

His third day of Senate testimony has revealed little about how Gorsuch might consider specific issues. He repeatedly said that it is his duty to “apply the law impartially.”

He has been skeptical of a judicial doctrine whereby government agencies’ interpretation of ambiguous statutes prevails unless it is unreasonable—the so-called Chevron deference. Chevron has become the basis of the legal argument for many environmental cases since the 1980s. But according to a concurring opinion Gorsuch wrote last year, the doctrine empowers bureaucrats to “swallow huge amounts of core judicial and legislative power” and to “concentrate federal power” in a way with which the framers of the Constitution would have disagreed.

On day two of his Senate hearing, Gorsuch may have partly clarified his stance on the legal doctrine.

“Scientists, biologists, chemists—the experts get great deference from the courts,” Gorsuch said. “The only question is who decides what the law is.”

The hearing for Gorsuch is expected to continue through Thursday and possibly into Friday. Senate Judiciary Committee Chairman Charles E. Grassley (R-Iowa) said the plan is for the full Senate to vote on Gorsuch by Easter.

Complex Picture of Carbon Emissions Emerges; Record Temps Continue

Thanks to a combination of stricter emissions regulations, a decline in the use of coal, cheaper natural gas and a rise in clean energy, climate-warming carbon dioxide emissions—totaling 32.1 metric gigatons in 2016—have remained flat for the third consecutive year despite 3.1 percent growth in the global economy over the same period, the International Energy Agency (IEA) announced on Monday. The biggest drop came from the United States, where carbon dioxide emissions fell 3 percent, while the economy grew 1.6 percent. Carbon dioxide output also declined 1 percent in China, where the economy grew by more than 6 percent, showing that the world’s two largest energy users and carbon emitters may be able to balance economic growth with emissions reductions. The decreases offset increases in most of the rest of world.

“These three years of flat emissions in a growing global economy signal an emerging trend and that is certainly a cause for optimism, even if it is too soon to say that global emissions have definitely peaked,” said IEA Executive Director Fatih Birol. “They are also a sign that market dynamics and technological improvements matter.”

In 2016, renewables, particularly hydro, supplied more than half the growth in global electricity demand. The overall increase in the world’s nuclear net capacity last year was the highest since 1993, with new reactors becoming operational in China, the United States, South Korea, India, Russia and Pakistan. And coal demand fell worldwide but particularly in the United States, where it was down 11 percent in 2016 and where, for the first time, more electricity was generated from natural gas than from coal.

Although positive for air pollution, the emissions pause, said the IEA, is insufficient to keep global temperatures from rising 2 degrees Celsius, the cutoff that scientists say helps us to avoid the worst effects of climate change. Transparent, predictable policies are needed worldwide to ensure temperatures do not rise above 2 degrees Celsius.

The National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration on Friday announced that last month’s average global temperature was 1.76 degrees Fahrenheit above the 20th-century average of 53.9 degrees Fahrenheit, making February 2017 the second warmest, behind last February, in 137 years of record keeping.

On the heels of this announcement, the annual State of the Global Climate report from the World Meteorological Organization (WMO) also showed that 2016 was the warmest year on record. The El Niño weather phenomenon contributed 0.1 to 0.2 degrees to the longer-term warming driven by carbon dioxide emissions.

“The year 2016 was the warmest on record—a remarkable 1.1 degrees Celsius above the pre-industrial period, which is 0.06 degrees Celsius above the previous record set in 2015,” said WMO Secretary General Petteri Taalas. “This increase in global temperatures is consistent with other changes occurring in the climate system. Globally averaged sea surface temperatures were also the warmest on record, global sea levels continued to rise, and Arctic sea-ice extent was well below average for most of the year.”

According to WMO, provisional data also indicates that there has been no easing in the rate of increase in atmospheric carbon dioxide despite the fading of 2016’s strong El Niño conditions, a phenomenon in the Pacific that increases global temperatures and affects weather patterns.

“Even without a strong El Niño in 2017, we are seeing other remarkable changes across the planet that are challenging the limits of our understanding of the climate system,” said David Carlson, director of the World Climate Research Programme. “We are now in truly uncharted territory.”

The WMO says the Arctic has experienced the “polar equivalent of a heatwave” at least three times this winter, while Antarctic sea ice has been at a record low.

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Executive Orders Expected on Climate Rules as Trump Contemplates Paris Agreement Fate

The Nicholas Institute for Environmental Policy Solutions at Duke University

President Donald Trump is expected to sign an executive order directing the U.S. Environmental Protection Agency (EPA) to dismantle Obama-era climate rules, including the Clean Power Plan, which sets limits on carbon dioxide emissions from existing fossil-fuel fired power plants. Originally expected this week, GreenWire reports that according to a White House official the order “may be pushed beyond this week.”

It was unclear until now if the Trump administration would “repeal and replace” the Clean Power Plan, or just set upon a path to undo it, but the executive order will only call for the withdrawal of the regulation, according to sources (subscription). It could also instruct the Justice Department to effectively withdraw its legal defense of the climate rule in the U.S. Court of Appeals for the District of Columbia Circuit.

Like other executive orders recently signed by the president, this one would not, by itself, roll back the Clean Power Plan. Altering a final rule, like the Clean Power Plan, isn’t as simple as the stroke of a pen. It will likely require the EPA to undertake a new rulemaking process, including public notice and comment that could last a few years.

Unless Congress amends the Clean Air Act or the Supreme Court reverses prior opinions, the EPA retains its authority—and a legal obligation—to regulate greenhouse gases under the Clean Air Act. The question then becomes which Clean Air Act program is appropriate for the EPA to fulfill its legal obligation—the authority that underpins the Clean Power Plan or another provision of the Clean Air Act—and how the Trump administration believes that authority should be deployed in its discretion.

And while members of the Trump administration remain split on whether to follow through with campaign promises to withdraw from the Paris Agreement, the European Union (EU) pledged to “reinvigorate EU climate diplomacy … taking into account the latest developments and changing geopolitical landscape.” The EU may be looking to Canada to help ensure the agreement is implemented.

Oil and Gas Industry No Longer Required to Report Methane Emissions

U.S. Environmental Protection Agency (EPA) Administrator Scott Pruitt withdrew an Information Collection Request order issued by the Obama administration in November requiring the oil and gas industry to report information about their equipment and operations in an effort to rein in leaks of methane. The order, which took effect immediately, was the EPA’s first step to regulate methane emissions from the sector.

In November, the EPA sent letters to more than 15,000 owners and operators in the oil and gas industry requiring them to provide information on the numbers and types of equipment at onshore oil and gas production facilities, as well as information on methane emissions at the sites.

A letter sent to the EPA by the attorney generals of Alabama, Arizona, Kansas, Kentucky, Louisiana, Mississippi, Montana, Oklahoma, South Carolina and West Virginia expressed concern with the requirement, prompting the withdrawal.

“By taking this step, EPA is signaling that we take these concerns seriously and are committed to strengthening our partnership with the states,” Pruitt said. “Today’s action will reduce burdens on businesses while we take a closer look at the need for additional information from this industry.”

Senate Approves Rick Perry as Energy Secretary, Ryan Zinke as Interior Lead

Last week, the U.S. Senate confirmed two department heads who will have considerable influence on how the country approaches energy issues from funding of advanced energy projects to use of public lands for oil and gas extraction.

In a 62–37 vote, Rick Perry was confirmed as head of the U.S. Department of Energy, the agency he vowed to eliminate during his failed 2012 presidential bid and at the helm of which he faces tough issues related to regulatory reach, efforts to mitigate climate change, and potentially deep cuts in agency staffing and spending. He now is responsible for maintenance of the nation’s nuclear arsenal and 17 national laboratories that conduct research into energy technologies that could help fight climate change, a phenomenon he has questioned. During his confirmation hearings he acknowledged that human activity has contributed to warming, a sharp pivot from the global cooling cover up he advanced in his 2010 book, Fed Up! Our Fight to Save America from Washington.

As governor of Texas, Perry presided over big increases in his state’s wind power and shale oil drilling. During his Senate confirmation hearing, he said he would seek to develop American energy in all forms—oil, gas, nuclear, and renewable—and that he would rely on federal scientists to pursue “sound science.”

He replaces Ernest Moniz, a nuclear physicist who led technical negotiations in the 2015 Iran nuclear deal and successor of Steven Chu, a Nobel Prize-winning physicist.

By a vote of 68 to 31, former Montana Rep. Ryan Zinke was confirmed as secretary of the Department of the Interior, where he assumes oversight of 500 million acres of public land, including 59 national parks. Zinke, who has questioned climate science and expressed support for expanding mining and oil and gas development on public land, will now head up the National Park Service, the U.S. Geological Survey, the Bureau of Reclamation and the Bureau of Indian Affairs.

During Senate committee hearings on his nomination last month, Zinke said one of his first priorities would be to fix deteriorating infrastructure at parks under the National Park Service. But he gave little clue about how he would act on other issues as head of the department whose agencies decide how resources such as coal are managed and which animals are eligible for listing under the Endangered Species Act.

He did say that federal land should be managed under a multiple-use model that allows hiking, hunting, fishing and camping along with timber harvesting, coal mining and oil and natural gas drilling.

Meanwhile, one of Trump’s confirmed cabinet members, Scott Pruitt, who was approved by the Senate last month and sworn in as EPA administrator,

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.

Congressional Review Act Used to Repeal Energy Disclosure Rule as Trump Cabinet Members Await Vote

The Nicholas Institute for Environmental Policy Solutions at Duke University

The Congressional Review Act was used to repeal a rule that forced energy companies on the U.S. stock exchanges to disclose the royalties and other payments that oil, natural gas, coal and mineral companies make to governments in an effort to fight corruption in resource-rich countries. President Donald Trump signed legislation to scrap the rule, implemented by the Securities and Exchange Commission under the Dodd-Frank Wall Street Reform and Consumer Protection Act, on Tuesday.

“This is one of many,” Trump said after the signing of H.J. Res. 41. “We have many more left. And we’re bringing back jobs big league.”

The repeal of the Obama-era rule was made possible through the rarely used Congressional Review Act, which allows Congress a small window to scuttle regulations before they take effect with a simple majority vote and blocks regulators from writing similar rules in the future unless Congress authorizes them through subsequent legislation. Given the infrequency with which the Congressional Review Act has been used, however, legal uncertainty hangs over how the government approaches a statutorily required regulation that is overturned through the Congressional Review Act. Before Trump took office, the Congressional Review Act had been used only once, in 2001, to overturn a Clinton administration ergonomics rule.

So far, the House has moved to repeal eight other rules, including a rule restricting coal companies from dumping mining waste into streams and one curtailing methane waste from oil and gas drilling on public lands. The Senate could consider the latter, H. J. Res. 36, which would rescind the Bureau of Land Management’s Waste Prevention, Production Subject to Royalties, and Resource Conservation rule, this week. Also this week, Trump could sign a separate resolution scrapping the U.S. Department of the Interior’s Stream Protection Rule, enacted to protect 6,000 miles of streams and 52,000 acres of forests.

Meanwhile, Senate Majority Leader Mitch McConnell filed cloture Monday for six of Trump’s cabinet nominees, allowing them to come before the full Senate for a vote. Trump’s environment-focused nominees—Ryan Zinke (U.S. Department of the Interior) and Rick Perry (U.S. Department of Energy), are presently on hold. Some reports say Zinke’s confirmation may not be until March.

Although a Senate vote for Trump’s pick to lead the U.S. Environmental Protection Agency was expected this week, Senate Democrats requested Scott Pruitt’s vote be delayed due to a pending court case regarding e-mail records. There is no indication at this point that the vote will be delayed, however.

“These records are needed for the Senate to evaluate Mr. Pruitt’s suitability to serve in the position for which he has been nominated,” the Democrats wrote.

Sea Ice Continues to Shrink at Both Poles; Study Examines Method to Refreeze

Sea ice at the north and south poles continues to reach record low levels. In Antarctica, sea ice has shrunk to its lowest level since record keeping began in 1979—contracting to 2.287 million square kilometers. The average between 1981 and 2010 was more than 3 million square kilometers.

Sea ice in the Arctic is also tracking low—13.9 million square kilometers compared to the 30-year average of 15.2 million square kilometers.

“No one knows for sure what will happen, as there might be a rebounding from the very large decreases last year, or there might be a continuation of those decreases,” said Claire Parkinson, a NASA sea ice researcher. “Whichever way it turns out, the added information will probably help scientists to get a better handle on the likely causes.”

A new study published in Earth’s Future, the journal of the American Geophysical Union, suggests that it may be possible to refreeze ice in the Arctic, building back up record-low ice levels.

“This loss of sea ice represents one of the most severe positive feedbacks in the climate system, as sunlight that would otherwise be reflected by sea ice is absorbed by open ocean,” authors write. “It is unlikely that CO2 levels and mean temperatures can be decreased in time to prevent this loss, so restoring sea ice artificially is imperative.”

The authors examine a means for increasing sea ice production using wind power to pump water from the ocean and spray it on the surface during Arctic winters. Because the mean annual thickness of Arctic ice is approximately 1.5 meters, the authors say, this plan could increase the thickness of the ice by about 70 percent over the course of a winter—enough to counteract the 0.58 meters lost each year due to the changing climate.

“Thicker ice would mean longer-lasting ice. In turn, that would mean the danger of all sea ice disappearing from the Arctic in summer would be reduced significantly,” said Arizona State University’s Steven Desch, an author of the plan to use 10 million wind-powered pumps.

Human Activities Dwarf Natural Forces When It Comes to Climate Change Impacts

Two researchers who examined the Earth as a single complex system say they have captured in a one equation the impact of human activities. Those activities, specifically, the emission of greenhouse gases, are causing the climate to change 170 times faster than natural forces.

The study, published in the journal The Anthropocene Review, represents that exceptional rapid rate of change in an “Anthropocene equation.”

Explaining the equation in New Scientist, co-author Owen Gaffney of the University of Stockholm said it was developed “by homing in on the rate of change of Earth’s life support system . . .  For four billion years the rate of change of the Earth system has been a complex function of astronomical and geophysical forces plus internal dynamics: Earth’s orbit around the sun, gravitational interactions with other planets, the sun’s heat output, colliding continents, volcanoes and evolution, among others.”

“In the equation, astronomical and geophysical forces tend to zero because of their slow nature or rarity, as do internal dynamics, for now,” Gaffney added. “All these forces still exert pressure, but currently on orders of magnitude less than human impact.”

Gaffney said that although complex interactions between the Earth’s core and the biosphere had rendered Earth relatively stable over millions of years, human societies would be unlikely to fare so well. The research concluded that failure to reduce anthropological climate change could “trigger societal collapse.”

The Climate Post offers a rundown of the week in climate and energy news. It is produced each Thursday by Duke University’s Nicholas Institute for Environmental Policy Solutions.