DOI: 10.1029/2012JD018381
论文题名: Systematic and random errors between collocated satellite ice water path observations
作者: Eliasson S. ; Holl G. ; Buehler S.A. ; Kuhn T. ; Stengel M. ; Iturbide-Sanchez F. ; Johnston M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 6 起始页码: 2629
结束页码: 2642
语种: 英语
Scopus关键词: Advanced very high resolution radiometers (AVHRR)
; Optical radar
; Particle size analysis
; Random errors
; Satellite imagery
; Integrated retrieval
; Log-normal distribution
; Moderate resolution imaging spectroradiometer
; Passive microwave measurements
; Precipitation products
; Radio detection and ranging
; Satellite applications
; Very high resolution
; Ice
; data set
; error analysis
; microwave imagery
; MODIS
; observational method
; radar
; reflectance
; satellite imagery
; sensor
英文摘要: [1] There remains large disagreement between ice-water path (IWP) in observational data sets, largely because the sensors observe different parts of the ice particle size distribution. Adetailed comparison of retrieved IWP fromsatellite observations in the Tropics (±30° latitude) in 2007 was made using collocated measurements. The radio detection and ranging(radar)/light detection and ranging (lidar) (DARDAR) IWP data set, based on combined radar/lidar measurements, is used as a reference because it provides arguably the best estimate of the total column IWP. For each data set, usable IWP dynamic ranges are inferred from this comparison. IWP retrievals based on solar reflectance measurements, in the moderate resolution imaging spectroradiometer (MODIS), advanced very high resolution radiometer-based Climate Monitoring Satellite Applications Facility (CMSAF), and Pathfinder Atmospheres-Extended (PATMOS-x) datasets, were found to be correlated with DARDAR over a large IWP range (~20-7000 g m-2). The random errors of the collocated data sets have a close to lognormal distribution, and the combined random error of MODIS and DARDAR is less than a factor of 2, which also sets the upper limit forMODIS alone. In the same way, the upper limit for the random error of all considered data sets is determined. Data sets based on passive microwave measurements, microwave surface and precipitation products system (MSPPS), microwave integrated retrieval system (MiRS), and collocated microwave only (CMO), are largely correlated with DARDAR for IWP values larger than approximately 700 g m-2. The combined uncertainty between these data sets and DARDAR in this range is slightly less MODISDARDAR, but the systematic bias is nearly an order of magnitude. © 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/63860
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: Department of Computer Science, Electrical and Space Engineering, Division of Space Technology, Luleå University of Technology, Kiruna, Sweden; Satellite Application Facility on Climate Monitoring, Deutscher Wetterdienst, Offenbach, Germany; I. M. Systems Group, Inc., National Oceanic and Atmospheric Administration, Center for Satellite Applications and Research, Camp Springs, MD, United States; Department of Earth and Space Sciences, Chalmers University of Technology, Gothenburg, Sweden
Recommended Citation:
Eliasson S.,Holl G.,Buehler S.A.,et al. Systematic and random errors between collocated satellite ice water path observations[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(6)