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European Parliament calls for fast action to cut non-CO2 climate forcers

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The European Parliament is calling for fast action to reduce non-CO 2 climate forcers including black carbon soot, hydrofluorocarbons (HFCs), methane, and ground-level ozone, which together are responsible for nearly half of climate forcing. Even cutting CO 2 emissions to zero today will not produce cooling for a thousand years.

Climate 225
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New international Climate and Clean Air Coalition to focus on reduction of short-lived climate pollutants

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Global benefits from full implementation of measures for reduction of short-lived climate pollutants in 2030 compared to the reference scenario. The climate change benefit is estimated for a given year (2050) and human health and crop benefits are. for 2030 and beyond. Source: UNEP. Click to enlarge. Earlier post.). Earlier post.).

Climate 210
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Indo-US task force to study HFC phase-down

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India’s Minister of Environment, Jairam Ramesh, hosted US Deputy Assistant Secretary of State for Environment, Daniel A. HFCs are chemicals are potential substitutes for ozone-depleting and climate-warming CFCs and HCFCs currently being phased out under the Montreal Protocol treaty to protect the ozone layer.

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New international study finds lab testing of diesel NOx emissions underestimates real-world levels by up to 50%

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in collaboration with scientists at the University of York’s Stockholm Environment Institute (SEI); University of Colorado; and the International Institute for Applied Systems Analysis, assessed 30 studies of vehicle emissions under real-world driving conditions in 11 major vehicle markets representing 80% of new diesel vehicle sales in 2015.

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Study finds global rivers and streams emitting 3x IPCC estimates of the GHG N2O

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That’s three times the amount estimated by the Intergovernmental Panel on Climate Change (IPCC). Nitrous oxide is a potent greenhouse gas that contributes to climate change and stratospheric ozone destruction. This multi-site experiment clearly establishes streams and rivers as important sources of nitrous oxide.

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EPA report to Congress finds a strong scientific and technical foundation for mitigating black carbon emissions

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The US Environmental Protection Agency (EPA) has submitted its final Report to Congress on Black Carbon , in response to an October 2009 request from Congress to advance efforts to understand the role of black carbon (BC) in climate change. Effects of BC on climate, as compared to GHGs. Earlier post.). Earlier post.). Source: EPA.

Congress 252
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UNEP Report Calls for More Sophisticated Approach to Developing Biofuels; Limitations of Current LCA Studies

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Here, RME show advantages for primary energy and GHG, but disadvantages in terms of acidification, eutrophication and ozone depletion. Achim Steiner, UN Under-Secretary General and Executive Director of the UN Environment Programme. Source: “Assessing Biofuels”. Click to enlarge.

Ozone 186