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Study concludes a shift from gasoline to diesel engines is consistent with long-term climate mitigation efforts

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Global-mean temperature change caused by car exhaust emitted from gasoline and diesel engines specified in the previous and upcoming European vehicle emission standards (EURO 3, 4, 5, and 6). Passenger transport affects climate through various mechanisms involving both long-lived—i.e. black carbon, BC—climate forcers.

Climate 223
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US Climate Action Report to UN Projects 4% Growth in Total US GHG Emissions to 2020

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while the US GDP is projected to grow by 40%, according to the fifth National Communication on US climate change actions submitted by the US Department of State to the United Nations Framework Convention on Climate Change. The United States released previous Climate Action Reports in 1994, 1997, 2002, and 2006.

Climate 199
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Worldwatch Institute report finds global energy intensity increased in 2010 for second year in a row

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Global energy intensity, 1981-2010. Global energy intensity—defined as total energy consumption divided by gross world product—increased 1.35% in 2010, the second year of increases in the context of a broader trend of decline over the last 30 years, according to a new Vital Signs Online article from the Worldwatch Institute.

2010 246
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Study finds shipping emissions in East Asia contribute to up to 37.5K premature deaths each year

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A study by a team of researchers from China and the US has shown that shipping emissions in East Asia accounted for 16% of global shipping CO 2 in 2013, compared to only 4–7% in 2002–2005. However, the climate and air quality impacts from shipping are not well understood in this region.

Asia 150
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Met Office Climate Scientist: “Apocalyptic Predictions” Of Climate Change Can Impede Understanding Of Long-Term Warming Trends

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News headlines vie for attention and it is easy for scientists to grab this attention by linking climate change to the latest extreme weather event or apocalyptic prediction. But in doing so, the public perception of climate change can be distorted. This message is more difficult to get heard. Vicky Pope, Met Office. Earlier post.).

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Study Provides Evidence That Low-Level Clouds Act as Positive Feedback to Climate Change

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Time series of annual mean values of cloud and climate quantities averaged over the NE Pacific. (A) Low-level stratiform clouds—which play an important climatic role because of their net cooling effect on the global climate—appear to dissipate as the ocean warms, thereby enhancing the warming (i.e., A) COADS cloud data.

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New Report Concludes That Real Costs of Adapting to Climate Change Will Likely Be At Least 2-3X Greater Than Current Estimates

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Representation of damage from climate change avoided by adaptation, and damage not be adapted to (‘residual damage’) over the longer term. Parry co-chaired the IPCC working group on impacts, vulnerability and adaptation between 2002 and 2008. Source: “Assessing the costs.” In Click to enlarge. Professor Parry.