Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027913 |
Spatial Representativeness of PM2.5 Concentrations Obtained Using Observations From Network Stations | |
Shi, Xiaoqin1,2; Zhao, Chuanfeng1,2,3; Jiang, Jonathan H.4; Wang, Chunying5; Yang, Xin1,2; Yung, Yuk L.3 | |
2018-03-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:6页码:3145-3158 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Haze has been a focused air pollution phenomenon in China, and its characterization is highly desired. Aerosol properties obtained from a single station are frequently used to represent the haze condition over a large domain, such as tens of kilometers, which could result in high uncertainties due to their spatial variation. Using a high-resolution network observation over an urban city in North China from November 2015 to February 2016, this study examines the spatial representativeness of ground station observations of particulate matter with diameters less than 2.5m (PM2.5). We developed a new method to determine the representative area of PM2.5 measurements from limited stations. The key idea is to determine the PM2.5 spatial representative area using its spatial variability and temporal correlation. We also determine stations with large representative area using two grid networks with different resolutions. Based on the high spatial resolution measurements, the representative area of PM2.5 at one station can be determined from the grids with high correlations and small differences of PM2.5. The representative area for a single station in the study period ranges from 0.25 to 16.25km(2) but is less than 3km(2) for more than half of the stations. The representative area varies with locations, and observation at 10 optimal stations would have a good representativeness of those obtained from 169 stations for the 4month time scale studied. Both evaluations with an empirical orthogonal function analysis and with independent data set corroborate the validity of the results found in this study. |
英文关键词 | representative area PM2 5 spatial variation network observation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430108900013 |
WOS关键词 | AEROSOL OPTICAL DEPTH ; IMAGING SPECTRORADIOMETER MODIS ; SATELLITE ; VARIABILITY ; EXTINCTION ; POLLUTION ; CLOUD ; HAZE ; AOD |
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/32017 |
专题 | 气候变化 |
作者单位 | 1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China; 2.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China; 3.CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA; 4.CALTECH, Jet Prop Lab, Pasadena, CA USA; 5.Hebei Sailhero Environm Protect Hitech Ltd, Shijiazhuang, Hebei, Peoples R China |
推荐引用方式 GB/T 7714 | Shi, Xiaoqin,Zhao, Chuanfeng,Jiang, Jonathan H.,et al. Spatial Representativeness of PM2.5 Concentrations Obtained Using Observations From Network Stations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(6):3145-3158. |
APA | Shi, Xiaoqin,Zhao, Chuanfeng,Jiang, Jonathan H.,Wang, Chunying,Yang, Xin,&Yung, Yuk L..(2018).Spatial Representativeness of PM2.5 Concentrations Obtained Using Observations From Network Stations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(6),3145-3158. |
MLA | Shi, Xiaoqin,et al."Spatial Representativeness of PM2.5 Concentrations Obtained Using Observations From Network Stations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.6(2018):3145-3158. |
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