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Study estimates global black carbon emissions up 72% from 1960-2007; BC emissions intensity down 52%

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teragrams per year in 2007 (+72%). The Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) said BC has a direct radiative forcing of +0.4 (+0.05 Historical annual BC emissions in the residential sector (A), industrial sector (B), and motor vehicles (C) from 1960 to 2007. Click to enlarge.

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Open Letter by Netherlands Scientists on IPCC and Errors in 2007 Climate Change Report

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In response to the ongoing discussion about the reliability of the UN IPCC and the climate reports, a group of 55 leading Dutch scientists working in the field of climate change, energy and the environment wrote an open letter. Errors in the IPCC climate change report are being seized by some to discredit climate science.

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EPA proposes Renewable Fuel Standard (RFS) volumes for 2023-2025; seeking input on future modifications

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Because the Energy Independence and Security Act of 2007 (EISA) does not include volumes after 2022, this is the first time that EPA is setting these proposed biofuel volume targets without using those outlined in statute. The agency is seeking public input on the proposal to help shape the RFS program in the years ahead.

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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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This paper will be of interest to the community and will focus the discussions and future research into black carbon and its importance. The report’s best estimate of direct climate influence by black carbon is about a factor of two higher than most previous work. In a special comment on the significance of the Bond et al.

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EPA says methane emissions from natural gas production have dropped 36% from 2007-2011

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In its recently released Inventory of US Greenhouse Gas Emissions and Sinks: 1990 – 2011 ( earlier post ), the US Environmental Protection Agency (EPA) reported that methane (CH 4 ) emissions from the field production of natural gas have declined by 36% from 2007 to 2011 (from 83.1 Climate Change Emissions Natural Gas'

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US Global Change Research Program Issues Report on Impacts of Climate Change in US; Details Point to Potential Value of Early, Aggressive Action

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Widespread climate-related impacts are occurring now in the US and are expected to increase. A product of the interagency US Global Change Research Program, the 190-page report was commissioned in 2007 and completed this spring. It is clear that climate change is happening now. Source: USGCRP. Click to enlarge.

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IPCC Scientist Says Climate Change Likely to Accelerate More Quickly and Be More Damaging Than Predicted

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Without decisive action, climate change this century is likely to accelerate at a much faster pace and cause more environmental damage than predicted, according to Professor Chris Field of Stanford University, and a leading member of the UN Intergovernmental Panel on Climate Change. Chris Field.