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Black carbon is a much larger cause of climate change than previously assessed; about twice previous estimates, and 2/3 the effect of CO2

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the distribution of black carbon in the atmosphere and determine its role in the climate system. Black carbon (BC) is the second largest man-made contributor to global warming and its influence on climate has been greatly underestimated, according to the first quantitative and comprehensive analysis of this pollutant’s climate impact.

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Study projects net cooling of climate from ship emissions through 2050

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A recent study by an international team calculated that shipping causes a net cooling of climate across all parametrizations of the indirect aerosol effect (IAE) and scenarios throughout the period 1900?2050. 1 from shipping in 2007, corresponding to 3.3% 1 from shipping in 2007, corresponding to 3.3% Credit: ACS, Lund et al.

Climate 240
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EPA proposes CO2 emission standards for new fossil fuel-fired power plants

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EPA in 2007, the Supreme Court determined that greenhouse gases, including carbon dioxide, are air pollutants under the Clean Air Act and EPA must determine if they threaten public health and welfare. Climate Change Coal Emissions Natural Gas Policy Power Generation' Background. In the decision in Massachusetts v. Earlier post.)

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Study Highlights the Importance of Considering Climate Effects of Non-CO2 Emissions from Transport in Mitigation Strategies and Policies

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The on-road transportation (ORT) and power generation (PG) sectors are major contributors to CO 2 emissions and a host of short-lived radiatively-active air pollutants, including tropospheric ozone and fine aerosol particles, that exert complex influences on global climate. Unger et al. Click to enlarge. Unger et al.

Climate 150
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GCP Carbon Budget Finds Anthropogenic CO2 Emissions Rose 2% in 2008 Despite Global Financial Crisis; Natural Sinks Not Keeping Pace With Increasing Emissions

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The fraction of total CO 2 emissions remaining in the atmosphere has likely increased from 40 to 45% since 1959; models suggests this is due to the response of the natural CO 2 sinks to climate change and variability. Tags: Climate Change Emissions. over the previous seven years. —Dr Canadell. Le Quéré C et al.

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All Western European Countries Will Have CO2-Related Car Taxation This Year; European Auto Industry Urges Harmonization of Schemes

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The number of EU countries with CO2-related car taxation rose to 15 in 2008. In most Central and Eastern European countries, the main concern of policy makers remains to reduce the level of old vehicles on the streets with pollutant emission standards of below Euro 3. ACEA provides an overview of the CO 2 -based vehicle taxes here.

CO2 150
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Study Finds Controlling Soot May Be Fastest Method to Reduce Arctic Ice Loss and Global Warming; Second-Leading Cause of Global Warming After CO2

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However, climate models to date have mischaracterized the effects of soot in the atmosphere, according to Jacobson, director of Stanford’s Atmosphere/Energy Program. 1990; Anisimov, 2007] and chemical production of ozone in already-polluted locations [Jacobson, 2008b]. Tags: Climate Change Emissions. Mark Jacobson.

Global 230