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DOI | 10.1002/2017GL073939 |
Passive remote sensing of altitude and optical depth of dust plumes using the oxygen A and B bands: First results from EPIC/DSCOVR at Lagrange-1 point | |
Xu, Xiaoguang1,2; Wang, Jun1,2; Wang, Yi1,2; Zeng, Jing1,2; Torres, Omar3; Yang, Yuekui4; Marshak, Alexander4; Reid, Jeffrey; Miller, Steve6 | |
2017-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We presented an algorithm for inferring aerosol layer height (ALH) and optical depth (AOD) over ocean surface from radiances in oxygen A and B bands measured by the Earth Polychromatic Imaging Camera (EPIC) on the Deep Space Climate Observatory (DSCOVR) orbiting at Lagrangian-1 point. The algorithm was applied to EPIC imagery of a 2 day dust outbreak over the North Atlantic Ocean. Retrieved ALHs and AODs were evaluated against counterparts observed by Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), Moderate Resolution Imaging Spectroradiometer, and Aerosol Robotic Network. The comparisons showed 71.5% of EPIC-retrieved ALHs were within +/- 0.5 km of those determined from CALIOP and 74.4% of EPIC AOD retrievals fell within a +/- (0.1 + 10%) envelope of MODIS retrievals. This study demonstrates the potential of EPIC measurements for retrieving global aerosol height multiple times daily, which are essential for evaluating aerosol profile simulated in climate models and for better estimating aerosol radiative effects. Plain Language Summary DSCOVR is a satellite parked at Lagrange-1 point, similar to 1.5 million kilometers from Earth. It was launched in February 2015 and started the data collection in June 2015. It carries a sensor called EPIC that looks at the sunlit surface every 1 to 2 h. This paper presents a new technique to retrieve dust optical depth and dust altitude from EPIC's measurements within and outside of oxygen A and B absorption bands. The results are validated with MODIS and CALIOP data. The technique represents, for the first time, that we can reliably retrieve dust plume height from passive remote sensing multiple times a day. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407790500051 |
WOS关键词 | MODIS AEROSOL PRODUCTS ; RADIATIVE-TRANSFER ; SAHARAN DUST ; VERTICAL-DISTRIBUTION ; PUERTO-RICO ; INFORMATION-CONTENT ; RETRIEVAL ; TRANSPORT ; ALGORITHM ; MODEL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27677 |
专题 | 气候变化 |
作者单位 | 1.Univ Iowa, Dept Chem & Biochem Engn, Ctr Global & Reg Environm Studies, Iowa City, IA 52242 USA; 2.Univ Iowa, Dept Chem & Biochem Engn, Informat Initiat, Iowa City, IA 52242 USA; 3.NASA, Goddard Space Flight Ctr, Atmospher Chem & Dynam Lab, Greenbelt, MD USA; 4.NASA, Goddard Space Flight Ctr, Climate & Radiat Lab, Greenbelt, MD USA; 5.Naval Res Lab, Marine Meteorol Div, Monterey, CA USA; 6.Colorado State Univ, Cooperat Inst Res Atmosphere, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Xu, Xiaoguang,Wang, Jun,Wang, Yi,et al. Passive remote sensing of altitude and optical depth of dust plumes using the oxygen A and B bands: First results from EPIC/DSCOVR at Lagrange-1 point[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(14). |
APA | Xu, Xiaoguang.,Wang, Jun.,Wang, Yi.,Zeng, Jing.,Torres, Omar.,...&Miller, Steve.(2017).Passive remote sensing of altitude and optical depth of dust plumes using the oxygen A and B bands: First results from EPIC/DSCOVR at Lagrange-1 point.GEOPHYSICAL RESEARCH LETTERS,44(14). |
MLA | Xu, Xiaoguang,et al."Passive remote sensing of altitude and optical depth of dust plumes using the oxygen A and B bands: First results from EPIC/DSCOVR at Lagrange-1 point".GEOPHYSICAL RESEARCH LETTERS 44.14(2017). |
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