The U.S. Environmental Protection Agency (EPA) finalized a rule that sets domestic production consumption limits for hydrochlorofluorocarbons (HCFCs)--eventually phasing them out completely by 2020. The rule aims to reduce emissions from leakage and stockpiles of four HCFCs, a class of refrigerant linked to ozone depletion and climate change.
"This rule finalizes allowed amounts of HCFC production and import in 2015-2019 that protect human health and the environment, while also encouraging transition to non-ozone-depleting alternatives and greater recycling of existing HCFCs," the EPA said, adding that the rule "should promote a smooth and stable transition, since without this rule, domestic production and consumption of these HCFCs is prohibited as of January 1, 2015."
The final rule caps HCFC-22 at 10,000 megatons, down from the 13,700 megatons included in the EPA's December proposal (subscription). It also creates an incentive for commercial consumers relying on outdated equipment that uses HCFCs to convert to energy-efficient models.
Meanwhile, the EPA is tasked--under court order--with proposing a change to the existing National Ambient Air Quality Standards (NAAQS) for ground-level ozone by Dec. 1. Agency watchers speculate that the standards, currently at 75 parts per billion, will be made more stringent. Although some have argued that the cost of tighter standards would be high--$11 billion in 2020, according to the EPA--a new report by the Congressional Research Service (CRS) indicates these concerns may be premature.
"There has been speculation regarding the economic impact of a NAAQS revision," CRS's James McCarthy writes. "At the moment, no one knows what a revised NAAQS would cost, because EPA hasn't proposed one and we don't know what areas will be designated nonattainment. But even after a proposal is signed, cost estimates will be little better than guesses."
NOAA Reports Forecast Record Yearly Temps, Winter Outlook
Year to date, 2014 ties with 1998 and 2010 as the warmest year on record, according to new analysis from the National Oceanic and Atmospheric Administration (NOAA). Recorded temperatures were 1.22 degrees Fahrenheit above average.
"If 2014 maintains this temperature departure from average for the remainder of the year, it will be the warmest year on record," the report indicated. Why? The increased chance for an El Nino--a warming of the tropical Pacific Ocean affecting weather worldwide. These rising ocean temperatures have implications for coral reefs, sea level rise and weather patterns worldwide.
"Last year's winter was exceptionally cold and snowy across most of the United States, east of the Rockies," NOAA said. "A repeat of this extreme weather pattern is unlikely this year, although the [outlook] does favor below-average temperatures in the south-central and southeastern states."
Tackling Rising Emissions
New data from the Energy Information Administration (EIA) indicates that carbon dioxide emissions from the U.S. energy sector increased 2.5 percent between 2012 and 2013--a jump from 5,267 million metric tons (MMmt) to 5,396 MMmt. Despite the increase, emissions were 10 percent below their 2005 level.
"An increase in energy intensity ... was a leading cause of the 2013 increase in energy-related CO2 emissions when compared with the trend from the prior decade, which was -2.0pc," EIA said. "Weather played an important role in the year-to-year increase in CO2 emissions."
Negotiators from more than 190 nations were urged to "build bridges" toward a new global pact to curb greenhouse gas emissions at a meeting in preparation for talks in Lima, Peru, this December. Nations are working toward an agreement, to be decided in Paris in 2015, that would cut these emissions beginning in 2020. On the table--steps that can be taken to increase commitments from countries and the extent to which a 2015 treaty will be legally binding. Two themes in particular--carbon capture, storage and use; and non-CO2 greenhouse gases like methane and HCFCs are dominating the discussions.
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.