DOI: 10.1002/jgrd.50504
论文题名: Use of spaceborne lidar for the evaluation of thin cirrus contamination and screening in the Aqua MODIS Collection 5 aerosol products
作者: Huang J. ; Hsu N.C. ; Tsay S.-C. ; Liu Z. ; Jeong M.-J. ; Hansell R.A. ; Lee J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 12 起始页码: 6444
结束页码: 6453
语种: 英语
英文关键词: aerosol
; AQUA-MODIS
; CALIPSO
; cirrus screening
; thin cirrus
; VFM
Scopus关键词: Aerosols
; Contamination
; Optical radar
; Radiometers
; Reflection
; Satellite imagery
; Supercomputers
; Temperature
; Aerosol retrieval algorithms
; AQUA-MODIS
; Brightness temperature difference
; CALIPSO
; Cloud-aerosol lidar and infrared pathfinder satellite observations
; Moderate resolution imaging spectroradiometer
; Thin cirrus
; VFM
; Clouds
; aerosol
; algorithm
; cirrus
; image resolution
; MODIS
; precipitation (chemistry)
; quantitative analysis
; seasonal variation
; SIR
英文摘要: Cloud contamination from subvisual thin cirrus clouds is still a challenging issue for operational satellite aerosol retrievals. In the A-Train constellation, concurrent high-sensitivity cirrus observations from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) provide us with an unprecedented opportunity to examine the susceptibility of the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol retrievals to thin cirrus contamination and to evaluate the robustness of various cirrus screening techniques. Quantitative evaluations indicate that the current cirrus screening schemes in the MODIS Dark Target and Deep Blue Collection 5 aerosol retrievals can effectively remove most cirrus signals while some residual thin cirrus signals still exist with strong spatial and seasonal variability. Results also show significant linkage between thin cirrus occurrence frequency and the susceptibility of aerosol retrievals to thin cirrus contamination. Using the CALIPSO cirrus observations as a reference, we also examined the effectiveness and robustness of eight MODIS-derived cirrus screening parameters. These parameters include apparent reflectance at 1.38 μm (R1.38), cirrus reflectance at 0.66 μm (CR0.66), CR0.66 cirrus flag (CF), reflectance ratio between 1.38 μm and 0.66 μm (RR1.38/0.66), reflectance ratio between 1.38 μm and 1.24 μm (RR1.38/1.24), brightness temperature difference between 8.6 μm and 11 μm (BTD8.6-11), brightness temperature difference between 11 μm and 12 μm (BTD11-12), and cloud phase infrared approach (CPIR). Among these parameters, RR1.38/0.66 achieves the best overall performance, followed by the BTD11-12. Results from several test cases suggest that the cirrus screening schemes in the operational MODIS aerosol retrieval algorithms can be further improved to reduce thin cirrus contamination. Key Points Quantitatively evaluate cirrus contamination in MODIS C5 aerosol retrievals Systematically compare 8 MODIS-derived cirrus screening parameters Demonstrate improved cirrus screening of MODIS aerosol retrievals © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63605
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Earth System Science Interdisciplinary Center, UMD, College Park, MD, United States; Center for Satellite Applications and Research, NESDIS, NOAA, 5825, University Research Court, College Park, MD 20740, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; NASA Langley Research Center, Hampton, VA, United States; Science Systems and Applications Inc., Hampton, VA, United States; Department of Atmospheric and Environmental Sciences, Gangneung-Wonju National University, Gangneung, South Korea
Recommended Citation:
Huang J.,Hsu N.C.,Tsay S.-C.,et al. Use of spaceborne lidar for the evaluation of thin cirrus contamination and screening in the Aqua MODIS Collection 5 aerosol products[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)