Remove 2008 Remove Carbon Remove Ozone
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Obama Administration withdraws proposed rulemaking on strengthened ozone standards

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In a statement released this morning, President Barack Obama said he has requested that US Environmental Protection Agency (EPA) Administrator Lisa Jackson withdraw the agency’s draft Ozone National Ambient Air Quality Standards (NAAQS) rulemaking. Earlier post.) National Ambient Air Quality Standards (NAAQS).

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EPA proposes approval of new ozone plans for the two of the worst Air Quality Zones in US: California’s San Joaquin Valley and South Coast

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US EPA Region 9 8-hour ozone trends, 1979-2000. These State Implementation Plans (SIPs) are the roadmaps to meeting the 1997 8-hour ozone National Ambient Air Quality Standards (NAAQS) of 0.08 In 1997, EPA first established the 8-hour ozone standard, which replaced the older 1-hour ozone standard (0.12 Source: EPA.

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WMO: Atmospheric Concentrations of Main Greenhouse Gases in 2008 Set New Highs

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Relative contribution of major greenhouse gases to the overall change in radiative forcing between 1979 and 1984 (a) and from 2003 to 2008 (b). Atmospheric levels of major greenhouse gases continue to increase, according to the World Meteorological Organization’s (WMO) 2008 Greenhouse Gas Bulletin. from 2007 to 2008.

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San Joaquin Valley receives $12.9M from CARB for clean trucks

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The San Joaquin Valley has been attainment for Carbon Monoxide (CO) since 1994, reached attainment for the federal PM 10 standard in 2008, and demonstrated attainment of the federal 1-hour ozone standard in 2014. The District is currently working on reaching attainment for the federal 8-hour ozone and PM 2.5 standards.

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US EPA Reports National Trends Show Improvements in Air Quality

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Since 1990, nationwide air quality has improved significantly for the six common air pollutants: ground-level ozone; particle pollution; lead; nitrogen dioxide; carbon monoxide; and sulfur dioxide, according to the US Environmental Protection Agency (EPA) report “Our Nation’s Air - Status and Trends through 2008”. annual PM 2.5

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NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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In particular, the study led by Drew Shindell found that methane emissions have a larger warming impact due to those interactions than accounted for in current carbon-trading schemes or in the Kyoto Protocol. Because the latter was a $126 billion/year market in 2008, even small differences in GWPs can have large economic consequences.

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Cutting Non-CO2 Pollutants Can Delay Abrupt Climate Change; The Fast Action Climate Agenda

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2009), reproduced from Ramanathan and Feng (2008) Click to enlarge. Cutting HFCs, black carbon, tropospheric ozone, and methane can buy us about 40 years before we approach the dangerous threshold of 2°C warming. —co-author HFCs are powerful greenhouse gases originally developed as substitutes for ozone-depleting chemicals.