Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017JD028075 |
The Transport of Asian Dust and Combustion Aerosols and Associated Ozone to North America as Observed From a Mountaintop Monitoring Site in the California Coast Range | |
Asher, Elizabeth C.1,2; Christensen, John N.3; Post, Andrew1,4; Perry, Kevin5; Cliff, Steven S.6; Zhao, Yongjing6; Trousdell, Justin1; Faloona, Ian1 | |
2018-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:10页码:5667-5680 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Aerosol and tropospheric ozone transport to North America has important implications for regional air quality and climate. We present data from Chews Ridge, a remote mountaintop site in California, in February-September 2012, which identifies separate Asian dust and Asian combustion aerosol signals and quantifies exogenous ozone. We use positive matrix factorization of size-fractionated aerosol X-ray fluorescence data and Pb-206/Pb-207 and Pb-208/Pb-207 isotope measurements to isolate aerosol signals of Asian origins and find good agreement between both types source attribution techniques. Power spectra of Asian dust and Asian combustion signals reveal two distinct peaks, one seasonal (similar to 90days) and one monthly (similar to 25-30days). Overall, 89% of the Asian dust signal occurs in March-May, compared with June-September, whereas only 51% of the Asian combustion signal occurs in March-May. Nearly half the Pb observed at Chews Ridge was derived from Asia (46%; 8.3% from Asian dust, 23% from Asian combustion, and 15% of the Asian Pb signal was not explained by the positive matrix factorization). A positive correlation between deseasonalized ozone concentrations and the Asian factors suggests that ozone is elevated by 6.30.8ppb due to transpacific transport. Scanning mobility particle size spectra were also measured from May to September and indicate that new particles are often produced and grow throughout the afternoon during onshore flow. We hypothesize that particle nucleation on the windward edge of the continent is an important source of new particles. |
英文关键词 | aerosol transport particle nucleation exogenous ozone |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435445600052 |
WOS关键词 | PACIFIC TRANSPORT ; FREE TROPOSPHERE ; MIXING RATIOS ; EMISSIONS ; POLLUTION ; WHISTLER ; LEAD ; DEPOSITION ; SIGNATURES ; PARTICLES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33770 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 3.Lawrence Berkeley Natl Lab, Berkeley, CA USA; 4.Calif Air Resources Board, Sacramento, CA USA; 5.Univ Utah, Atmospher Sci, Salt Lake City, UT USA; 6.Univ Calif Davis, Air Qual Res Ctr, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Asher, Elizabeth C.,Christensen, John N.,Post, Andrew,et al. The Transport of Asian Dust and Combustion Aerosols and Associated Ozone to North America as Observed From a Mountaintop Monitoring Site in the California Coast Range[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):5667-5680. |
APA | Asher, Elizabeth C..,Christensen, John N..,Post, Andrew.,Perry, Kevin.,Cliff, Steven S..,...&Faloona, Ian.(2018).The Transport of Asian Dust and Combustion Aerosols and Associated Ozone to North America as Observed From a Mountaintop Monitoring Site in the California Coast Range.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),5667-5680. |
MLA | Asher, Elizabeth C.,et al."The Transport of Asian Dust and Combustion Aerosols and Associated Ozone to North America as Observed From a Mountaintop Monitoring Site in the California Coast Range".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):5667-5680. |
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