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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.
Illustration of projected ozone changes in the South Coast region due to climate change in 2050. Areas in orange and red could see ozone concentrations elevated by 9 to 18 parts per billion. Kleeman of UC Davis, lead author. Click to enlarge. We must consider climate change and air pollution together as we plan for the future.
Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. Edward Schelegle, University of California, Davis. Earlier post.). Specifically, we found that 6.6
55% of land area) by the middle of the century, and would increase by 3% and 4% the population-weighted average concentrations of fine particulate matter (PM 2.5 ) and ozone, respectively. and ozone exposure, respectively. and ozone in 2050 by factors of 1 and 3, respectively. C) and ozone (D) exposure are shown.
As California continues to reduce local sources of ozone, ozone entering the state from the Pacific makes up a larger fraction of measured ozone levels. An ozonesonde is a balloon which measures ozone from the surface to more than 10 kilometers above the ground.
They found that 6PPD, the primary antioxidant chemical used in tire rubber, reacts with ozone to form the previously unidentified compound 6PPD-quinone. Ozone breaks the bonds holding the tire together. 6PPD reacts with ozone before it can react with the tire rubber, sparing the tires. Davis, Michael C. Scholz, Jay W.
They found that reductions in ground ozone during this 35-year period resulted in $600 million in increased production annually by the early 2010s. Davis and his colleagues chose to concentrate on perennials because of the long-term investment they represent and the fact that California is a major supplier of this type of produce.
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. The product doesn’t contain the pollution, but creating it caused the pollution. Maximum daily percentage of sulfate pollution in US related to Chinese exports.
The results, published in an open-access paper in the journal Science , suggest that the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted, the authors suggested. Jathar, Colorado State University and UC Davis; Ali Akherati, Colorado State University; Jose L. Frost, James M. Roberts, Thomas B.
Black carbon is part of a group of pollution sources known as Short-Lived Climate Forcers (SLCFs), including methane gas and ozone, which are produced on earth. Cappa, a professor of engineering at the University of California, Davis, and Timothy B. Earlier post.). Led by principal investigators Christopher D.
A new report released by the California Air Resources Board (ARB) has sent a stark warning on the effects of climate change on ozone levels in the state’s major air basins.
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. Dallmann, Laura Davis, Shang Liu, Douglas A. —Gentner et al. Gentner, Gabriel Isaacman, David R. Worton, Arthur W. Chan, Timothy R. Day, Lynn M.
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. and ozone in warm months, and with PM 2.5 , carbon monoxide, nitrogen dioxide and oxides of nitrogen in the cool season.
A NASA-led study has documented an unprecedented depletion of Earth’s protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere. The same ozone-loss processes occur each winter in the Arctic.
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