The emissions trading program in the northeastern United States—the Regional Greenhouse Gas Initiative (RGGI)—is responsible for about half the region’s emissions reductions—an amount far greater than reductions achieved in the rest of the country.
The study in the journal Energy Economics determined that even when controlling for other factors—the natural gas boom, the recession, and environmental regulations—emissions would have been 24 percent higher in participating states without RGGI (subscription). RGGI, the first market-based regulatory program in the United States, is a cooperative effort among states to create a “cap” that sets limits on carbon dioxide emissions from the power sector—a cap lowered over time to reduce emissions. Power plants that can’t stay under the cap must purchase credits or “emissions allowances” from others that can.
“While the study focused on the northeastern states and the RGGI program specifically, the findings suggest that emissions trading could be a cost-effective strategy for states now considering how to comply with EPA’s recently issued regulations aimed at reducing carbon dioxide from power plants,” said Brian Murray, lead author and director of the Environmental Economics Program at Duke University’s Nicholas Institute for Environmental Policy Solutions.
A separate study in the journal Nature Climate Change found significant misuse of a key carbon offsetting scheme after several factories increased their production of industrial waste products—spiking emissions. It suggests that a loophole in the United Nation’s carbon market may have led to “perverse incentives” for some industrial plants to increase emissions so they could then make money by reducing them.
A companion study indicates that the majority of credits from Russia and Ukraine were a sham and that no emissions were reduced. In fact, the study estimates use of the sham offsets actually enabled greenhouse gas emissions to increase by some 600 million tons of carbon dioxide equivalent.
“We were surprised ourselves by the extent, we didn’t expect such a large number,” said study co-author Anja Kollmuss. “What went on was that these countries could approve these projects by themselves there was no international oversight, in particular Russia and Ukraine didn’t have any incentive to guarantee the quality of these credits.”
Study Quantifies Global Warming’s Contribution to California’s Drought
How much of California’s drought is due to climate change? A study published in Geophysical Research Letters has an answer: up to 27 percent. The study also indicates that climate change has made the odds of severe droughts twice as likely.
Global warming has worsened the drought through increased evapotranspiration, the contribution of which was quantified in detail for the first time by researchers at the Lamont-Doherty Earth Observatory, the National Aeronautics and Space Administration, and the University of Idaho who analyzed 432 combinations of precipitation, temperature, wind, and radiation data gathered between 1901 and 2014 to simulate monthly changes in soil moisture across California. When they modeled these combinations against various greenhouse gas emissions scenarios, they concluded that the state’s lack of rainfall is due to natural variability—a finding that accords with most other studies—but that California’s drought is 8 to 27 percent drier because of human-cause climate change (subscription).
“By knowing how much global warming has contributed to the trend in California drought conditions over the past century, we can reliably predict how the future will play out,” said A. Park Williams, a bioclimatologist at Lamont-Doherty who led the study. By the 2060s, Williams said, drought conditions will be more or less permanent, and evaporation will overpower bursts of intense rainfall.
Williams likened climate change to a “bully” that every year “demands more of your money than the year before. Every year, the bully—or atmosphere—is demanding more resources—or water—than ever before.”
He also said that California should more aggressively police groundwater withdrawals by agricultural operations, increasing use fees and fines for overuse. California is one of the few states that does not regulate such withdrawals, which after three years of drought have led to precipitous drops in groundwater tables and land subsidence.
Obama Announces Renewable Energy Initiatives
“We are here today because we believe that no challenge poses a greater threat to our future than climate change,” said President Obama at the National Clean Energy Summit in Las Vegas. “But we’re also here because we hold another belief, and that is, we are deeply optimistic about American ingenuity.”
According to a White House fact sheet, these measures include:
- $24 million for 11 projects in seven states to develop innovative solar technologies that double the amount of energy each solar panel can produce.
- Approval of a transmission line for a 485-megawatt photovoltaic facility planed for Riverside County.
- An additional $1 billion in federal loan guarantees available through a federal program for innovative versions of residential solar systems.
- Creation of the Interagency Task Force to Promote a Clean Energy Future for All Americans.
- Provision of residential Property-Assessed Clean Energy financing that facilitates investment in clean energy technologies for single-family homes.
- Creation of a new HUD and DOE program to provide home owners with a simple way to measure and improve their homes’ energy efficiency.
Energy Secretary Ernest Moniz said federal support is critical as the clean-energy industry seeks to become further established, noting “The playing field is not always as level and that’s where investors and developers can have risks. That’s where things like our loan program come in.”
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.