DOI: 10.1002/2013GL058405
论文题名: How do A-train sensors intercompare in the retrieval of above-cloud aerosol optical depth? A case study-based assessment
作者: Jethva H. ; Torres O. ; Waquet F. ; Chand D. ; Hu Y.
刊名: Geophysical Research Letters
ISSN: 0094-10501
EISSN: 1944-10232
出版年: 2014
卷: 41, 期: 1 起始页码: 186
结束页码: 192
语种: 英语
英文关键词: A-train
; Above-cloud Aerosol Optical Depth
; Passive and Active Sensors
Scopus关键词: A-train
; Active sensor
; Aerosol optical depths
; Cloud-aerosol lidar with orthogonal polarizations
; Marine boundary layer clouds
; Moderate resolution imaging spectroradiometer
; Ozone monitoring instruments
; Polarization and directionality of earth reflectances
; Algorithms
; Atmospheric aerosols
; Loading
; Polarization
; Radiometers
; Satellite imagery
; Sensors
; aerosol
; algorithm
; biomass burning
; boundary layer
; instrumentation
; lidar
; optical depth
; sensor
; Atlantic Ocean
英文摘要: We intercompare the above-cloud aerosol optical depth (ACAOD) of biomass burning plumes retrieved from A-train sensors, i.e., Moderate Resolution Imaging Spectroradiometer (MODIS), Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), Polarization and Directionality of Earth Reflectances (POLDER), and Ozone Monitoring Instrument (OMI). These sensors have shown independent capabilities to retrieve aerosol loading above marine boundary layer clouds - a kind of situation often found over the southeast Atlantic Ocean during dry burning season. A systematic comparison reveals that all passive sensors and CALIOP-based research methods derive comparable ACAOD with differences mostly within 0.2 over homogeneous cloud fields. The 532 nm ACAOD retrieved by CALIOP operational algorithm is underestimated. The retrieved 1064 nm AOD however shows closer agreement with passive sensors. Given the different types of measurements processed with different algorithms, the reported close agreement between them is encouraging. Due to unavailability of direct measurements above cloud, the validation of satellite-based ACAOD remains an open challenge. The intersatellite comparison however can be useful for the relative evaluation and consistency check. Key Points Above-cloud aerosol optical depths derived from A-train sensors are compared Agreement between sensors is robust over homogeneous cloud fields CALIOP 532 nm retrieval was underestimated but its 1064 nm is in close agreement ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896713293&doi=10.1002%2f2013GL058405&partnerID=40&md5=1bed5aa9dae14839184605db160a92d0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7765
Appears in Collections: 气候减缓与适应
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作者单位: Universities Space Research Association, Columbia, MD, United States
Recommended Citation:
Jethva H.,Torres O.,Waquet F.,et al. How do A-train sensors intercompare in the retrieval of above-cloud aerosol optical depth? A case study-based assessment[J]. Geophysical Research Letters,2014-01-01,41(1).