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UC Davis Begins $2.8M Studies on Impacts of Escaped Nitrogen

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University of California, Davis researchers will receive $2.8 These environmental impacts are not fully documented, according to Tom Tomich, director of the Agricultural Sustainability Institute at UC Davis. million in new grants to study the use and impacts of escaped nitrogen from agricultural production. Tom Tomich.

Davis 240
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Study first to quantify amount of US pollution resulting from Chinese manufacturing for exports

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Average annual percentage of black carbon pollution related to Chinese exports. Dust, ozone and carbon can accumulate in valleys and basins in California and other Western states. —Steve Davis, UC Irvine Earth system scientist and co-author. Credit: Lin et al. Click to enlarge. Click to enlarge.

Pollution 318
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Field study finds soot particles absorb significantly less sunlight than predicted by models; climate models may be overestimating warming by BC

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Although viewed as a potential target in the global effort to reduce climate change, atmospheric black carbon particles absorb significantly less sunlight than scientists have predicted, according to a new study by an international team of researchers, published in the journal Science. Earlier post.). Earlier post.).

Climate 261
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New study finds asthma morbidity in children is enhanced in areas with high traffic-related air pollution near the home

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The UC Davis/California Institute of Technology (UCD/CIT) Source Oriented Chemical Transport Model was used to output daily POA (primary organic aerosols) and SOA (secondary organic aerosols) at a 4x4 km resolution. Key findings included: Associations of asthma with ambient pollution, including carbon monoxide, oxides of nitrogen and PM2.5,

Pollution 150
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Berkeley study identifies diesel as main source of vehicular secondary organic aerosols

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The use of petroleum-derived fuels is an important source of reactive gas-phase organic carbon that provides key precursors to the formation of secondary OA (SOA) and tropospheric ozone. These compounds in un-burned gasoline and diesel fuel dominate vehicular emissions of reactive gas-phase carbon that have the potential to form SOA.

Diesel 281