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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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These are some of the findings of a new health assessment based on the Tropospheric Ozone Assessment Report (TOAR), an effort by the International Global Atmospheric Chemistry Project to create the world’s most comprehensive database of surface ozone observations from all available ozone monitoring stations around the globe. Owen Cooper.

Ozone 255
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Study finds pollution strengthens thunderclouds, warming the atmosphere

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Pollution warms the atmosphere through summer thunderstorm clouds, according to a computational study by a team of researchers from Pacific Northwest National Laboratory (PNNL), Hebrew University in Jerusalem and the University of Maryland published in Geophysical Research Letters. —Fan et al. —Jiwen Fan.

Pollution 218
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PNNL modeling study finds climate benefit for cutting soot, methane smaller than previous estimates

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Cutting the amount of short-lived, climate-warming emissions such as soot and methane won’t limit global warming as much as previous studies have suggested, according to a new study from the Joint Global Change Research Institute in College Park, Md., —Smith and Mizrahi. —Smith and Mizrahi.

Climate 199
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PNNL-led international study finds ultrafine aerosols have outsize impact on storm clouds, precipitation

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vehicles) and industrial air pollution—fuel powerful storms and influence weather much more than has been appreciated, according to a study published in the journal Science. Deep convective cloud (DCC) systems in the tropics produce copious precipitation and drive the global-scale circulation.

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New Research Tools for Assessing Impacts of Aerosols on Climate

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Researchers at the University of Maryland and the University of Texas, Austin, have created a database that includes visibility measurements taken from 1973 - 2007 at 3,250 meteorological stations all over the world and released by the National Climatic Data Center (NCDC). University of Maryland Visibility Database.

Climate 150
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Study finds that worldwide SO2 emissions rose between 2000-2005 after decade of decline; China, shipping topped growth

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Global sulfur dioxide emissions by region. Sulfur aerosols impact human health, ecosystems, agriculture, and global and regional climate. While the overall global uncertainty in sulfur dioxide emissions is relatively small, regional uncertainties ranged up to 30%. Credit: Smith et al. Click to enlarge. —Smith et al.

2005 186
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NRDC-sponsored Shulock report says California ZEV regulations need a tune-up to meet 2025 goals

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Prior to forming his consultancy, Shulock was Assistant Executive Officer and Director of Climate Programs at the California Air Resources Board, where he led the Board’s initial implementation of the California Global Warming Solutions Act (AB 32). Chuck Shulock. Earlier post.).