Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-11247-2018 |
Intra-annual variations of regional aerosol optical depth, vertical distribution, and particle types from multiple satellite and ground-based observational datasets | |
Zhao, Bin1,2; Jiang, Jonathan H.3; Diner, David J.3; Su, Hui3; Gu, Yu1,2; Liou, Kuo-Nan1,2; Jiang, Zhe1,2; Huang, Lei1,2; Takano, Yoshi1,2; Fan, Xuehua1,2; Omar, Ali H.4 | |
2018-08-13 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:15页码:11247-11260 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The climatic and health effects of aerosols are strongly dependent on the intra-annual variations in their loading and properties. While the seasonal variations of regional aerosol optical depth (AOD) have been extensively studied, understanding the temporal variations in aerosol vertical distribution and particle types is also important for an accurate estimate of aerosol climatic effects. In this paper, we combine the observations from four satellite-borne sensors and several ground-based networks to investigate the seasonal variations of aerosol column loading, vertical distribution, and particle types over three populous regions: the Eastern United States (EUS), Western Europe (WEU), and Eastern and Central China (ECC). In all three regions, column AOD, as well as AOD at heights above 800 m, peaks in summer/spring, probably due to accelerated formation of secondary aerosols and hygroscopic growth. In contrast, AOD below 800 m peaks in winter over WEU and ECC regions because more aerosols are confined to lower heights due to the weaker vertical mixing. In the EUS region, AOD below 800 m shows two maximums, one in summer and the other in winter. The temporal trends in low-level AOD are consistent with those in surface fine particle (PM2.5) concentrations. AOD due to fine particles (< 0.7 mu m diameter) is much larger in spring/summer than in winter over all three regions. However, the coarse mode AOD (> 1.4 mu m diameter), generally shows small variability, except that a peak occurs in spring in the ECC region due to the prevalence of airborne dust during this season. When aerosols are classified according to sources, the dominant type is associated with anthropogenic air pollution, which has a similar seasonal pattern as total AOD. Dust and sea-spray aerosols in the WEU region peak in summer and winter, respectively, but do not show an obvious seasonal pattern in the EUS region. Smoke aerosols, as well as absorbing aerosols, present an obvious unimodal distribution with a maximum occurring in summer over the EUS and WEU regions, whereas they follow a bimodal distribution with peaks in August and March (due to crop residue burning) over the ECC region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441403800003 |
WOS关键词 | IMAGING SPECTRORADIOMETER MISR ; SURFACE SOLAR-RADIATION ; PARTICULATE MATTER ; ABSORBING AEROSOLS ; MODIS ; CLOUD ; IMPACT ; POLLUTION ; CHINA ; DUST |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/22820 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 2.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 3.CALTECH, Jet Prop Lab, Pasadena, CA USA; 4.NASA, Langley Res Ctr, Hampton, VA 23665 USA |
推荐引用方式 GB/T 7714 | Zhao, Bin,Jiang, Jonathan H.,Diner, David J.,et al. Intra-annual variations of regional aerosol optical depth, vertical distribution, and particle types from multiple satellite and ground-based observational datasets[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(15):11247-11260. |
APA | Zhao, Bin.,Jiang, Jonathan H..,Diner, David J..,Su, Hui.,Gu, Yu.,...&Omar, Ali H..(2018).Intra-annual variations of regional aerosol optical depth, vertical distribution, and particle types from multiple satellite and ground-based observational datasets.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(15),11247-11260. |
MLA | Zhao, Bin,et al."Intra-annual variations of regional aerosol optical depth, vertical distribution, and particle types from multiple satellite and ground-based observational datasets".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.15(2018):11247-11260. |
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