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US and UK researchers report direct measurement of key atmospheric reactant; more rapid formation of secondary aerosols

Green Car Congress

succeeded in isolating the simplest CI and reported direct kinetic measurements of its reactions with water, NO, NO 2 , and SO 2. Molecules called Criegee intermediates—carbonyl oxides—are important atmospheric reactants, but only indirect knowledge of their reaction kinetics has been available. Welz et al. Welz et al.

Ozone 268
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Researchers measure reaction rates of second Criegee intermediate

Green Car Congress

Molecules called Criegee intermediates—carbonyl oxides—are important atmospheric reactants, but until recently, only indirect knowledge of their reaction kinetics has been available. The new measurements will provide further insight into hydrocarbon combustion and atmospheric chemistry. Earlier post.).

Water 218
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Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

Green Car Congress

60% of ground-level ozone (O 3 ) precursors, 6% of fine particulate matter (PM 2.5 ), and 22% of greenhouse gases (GHGs) emitted. They excluded emissions occurring outside of the contiguous US and surrounding waters) from the results below. On-road transportation accounts for approximately 20% of United States energy consumption.

Gasoline 236
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COVID-19 Forced Us All to Experiment. What Have We Learned?

Cars That Think

As economists and social scientists, we draw two fundamental insights from these examples of forced experimentation. He convinced the authorities to remove the handle from the pump of a particular water source that had been implicated in the spread of the disease, thereby halting that spread.

Chad 98