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Climate Expert: Don't Call It Geoengineering

Cars That Think

The leaders of the world have just returned from the UN's latest climate change summit, COP26 , in which the countries that have signed on to the Paris Agreement upped their commitments to fight climate change. C by the year 2100 , according to Climate Action Tracker. C above pre-industrial levels. In 2015, the U.S.

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Northwestern/Princeton study explores air quality impacts of aggressive conversion to EVs

Green Car Congress

In a paper published in the journal Atmospheric Environment , they report on the findings from a suite of scenarios designed to quantify the effect of both the magnitude of EV market penetration and the source of electricity generation used to power them. Seasons and times of day. Schnell, Vaishali Naik, Larry W. 2019.04.003.

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International study of role of soots impact on Arctic climate

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Scientists from the US, Norway, Russia, Germany, Italy and China are participating in a study examining the potential role of black carbon, or soot, on the rapidly changing Arctic climate. The Arctic climate is changing faster than some scientists expected. For the first time, a PMEL black carbon sensor will also be aboard the Mantas.

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Harvard team finds that the phase of atmospheric secondary organic material affects chemical aging; may require revision of regional and global climate models

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The findings, published in the Proceedings of the National Academy of Sciences , demonstrate that phase can be a key regulator of the reactivity of atmospheric SOM particles, and may call for a revision of regional and global climate models. For the environment, ammonia is a very tricky compound. —Kuwata Mikinori. Resources.

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Study Finds Current Swedish Biofuels Offer Major Climate Benefits; Biogas from Manure the Best

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Biogas produced from manure, waste from food industries, and organic household waste were found to provide a climate benefit of 148%, 119% and 103%, respectively, compared to fossil fuels. Pål Börjesson, researcher in Environment and Energy Systems at Lund University. Tags: Biodiesel Biomethane Climate Change Ethanol Europe.

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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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Test of Planet-Cooling Scheme Could Start in 2022

Cars That Think

Up there, 10 to 50 kilometers above the Earth’s surface, ozone molecules absorb the sun’s ultraviolet light, protecting life far below. Even less is understood about the potential risks to people and the environment—could the particles deplete the ozone layer, for example, or significantly alter the weather?

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