GSTDTAP  > 气候变化
DOI10.1029/2019JD031065
Oceanic Aerosol Loading Derived From MISR's 4.4 km (V23) Aerosol Product
Witek, Marcin L.1; Garay, Michael J.1; Diner, David J.1; Smirnov, Alexander2
2019-09-10
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2019
文章类型Article;Early Access
语种英语
国家USA
英文摘要

A new version (V23) of the Multi-angle Imaging SpectroRadiometer (MISR) Level 2 (swath-based) aerosol product was publicly released in mid-2018. V23 has seen many updates to the retrieval process, most notably over dark water (DW), which applies over the global oceans and other deep bodies of water. Here the quality of the new MISR DW retrievals is assessed using surface-based aerosol optical depth (AOD) observations from the Maritime Aerosol Network (MAN) and island/coastal sites within the AErosol RObotic NETwork (AERONET). About 406 MISR/MAN and 11,015 MISR/AERONET collocated observations were identified. Comparison against MAN reveals the unparalleled accuracy of the V23 AOD retrievals: the correlation coefficient is 0.98, the root-mean-square error is 0.041, and the mean bias is -0.002. Aerosol spatial heterogeneity negatively affects comparison statistics against AERONET observations-applying stricter collocation criteria drastically improves agreement between MISR and AERONET. The reported AOD uncertainties realistically represent retrieval errors as they exhibit behavior similar to that of the standard deviation of a Gaussian distribution. Over the 18 years of MISR data analyzed, the global area-weighted average AOD over oceans is 0.103; it becomes 0.151 when the averaging is restricted to locations where MAN observations are available. The AOD uncertainties are generally higher than average in offshore areas dominated by anthropogenic and biomass burning aerosols and lower than average in regions with mineral dust outflows. These results suggest future directions for improving the predefined aerosol mixtures used in the MISR aerosol retrieval look-up tables.


英文关键词AOD retrievals MISR V23 4 4 km AERONET and MAN AOD uncertainties oceanic aerosol loading
领域气候变化
收录类别SCI-E
WOS记录号WOS:000486892500001
WOS关键词IMAGING SPECTRORADIOMETER MISR ; OPTICAL DEPTH PRODUCT ; RETRIEVAL ALGORITHM ; DATA-ASSIMILATION ; PART 2 ; MODIS ; AERONET ; NETWORK ; AOD ; UNCERTAINTIES
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/186980
专题气候变化
作者单位1.CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA;
2.Sci Syst & Applicat Inc, Lanham, MD USA
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Witek, Marcin L.,Garay, Michael J.,Diner, David J.,et al. Oceanic Aerosol Loading Derived From MISR's 4.4 km (V23) Aerosol Product[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019.
APA Witek, Marcin L.,Garay, Michael J.,Diner, David J.,&Smirnov, Alexander.(2019).Oceanic Aerosol Loading Derived From MISR's 4.4 km (V23) Aerosol Product.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES.
MLA Witek, Marcin L.,et al."Oceanic Aerosol Loading Derived From MISR's 4.4 km (V23) Aerosol Product".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019).
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