DOI: 10.1002/jgrd.50809
论文题名: Suomi-NPP CrIS radiometric calibration uncertainty
作者: Tobin D. ; Revercomb H. ; Knuteson R. ; Taylor J. ; Best F. ; Borg L. ; Deslover D. ; Martin G. ; Buijs H. ; Esplin M. ; Glumb R. ; Han Y. ; Mooney D. ; Predina J. ; Strow L. ; Suwinski L. ; Wang L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 18 起始页码: 10589
结束页码: 10600
语种: 英语
英文关键词: CrIS
; radiometric calibration
; radiometric uncertainty
; Suomi NPP
; validation
Scopus关键词: Calibration
; Detectors
; Estimation
; Infrared devices
; Meteorology
; Orbits
; Radiometry
; Sounding apparatus
; Spectral resolution
; CrIS
; Radiometric calibrations
; Radiometric uncertainties
; Suomi NPP
; validation
; Uncertainty analysis
; calibration
; correlation
; estimation method
; infrared imagery
; nonlinearity
; parameterization
; radiance
; radiometer
; satellite imagery
; uncertainty analysis
英文摘要: The Cross-track Infrared Sounder (CrIS) is the high spectral resolution spectroradiometer on the Suomi National Polar-Orbiting Partnership (NPP) satellite, providing operational observations of top-of-atmosphere thermal infrared radiance spectra for weather and climate applications. This paper describes the CrIS radiometric calibration uncertainty based on prelaunch and on-orbit efforts to estimate calibration parameter uncertainties, and provides example results of recent postlaunch validation efforts to assess the predicted uncertainty. Prelaunch radiometric uncertainty (RU) estimates computed for the laboratory test environment are less than ~0.2 K 3 sigma for blackbody scene temperatures above 250 K, with primary uncertainty contributions from the calibration blackbody temperature, calibration blackbody reflected radiance terms, and detector nonlinearity. Variability of the prelaunch RU among the longwave band detectors and midwave band detectors is due to different levels of detector nonlinearity. A methodology for on-orbit adjustment of nonlinearity correction parameters to reduce the overall contribution to RU and to reduce field of view (FOV)-to-FOV variability is described. The resulting on-orbit RU estimates for Earth view spectra are less than 0.2 K 3 sigma in the midwave and shortwave bands, and less than 0.3 K 3 sigma in the longwave band. Postlaunch validation efforts to assess the radiometric calibration of CrIS are underway; validation results to date indicate that the on-orbit RU estimates are representative. CrIS radiance products are expected to reach "Validated" status in early 2014. Key Points CrIS is providing infrared radiance spectra for weather and climate studiesThe CrIS on-orbit radiometric uncertainty is less than 0.3 K 3 sigmaValidation results to date confirm this radiometric uncertainty estimate ©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/63305
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: Cooperative Institute for Meteorological Satellite Studies, Space Science and Engineering Center, University of Wisconsin-Madison, 1225 W. Dayton St., Madison, WI 53706, United States; ABB Analytical Measurement Products, Quebec, QC, Canada; Space Dynamics Laboratory, North Logan, UT, United States; Exelis Inc., Fort Wayne, IN, United States; Center for Satellite Applications and Research, National Environmental Satellite, Data, and Information Service, NOAA, Camp Springs, MD, United States; Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA, United States; University of Maryland, Baltimore County, Catonsville, MA, United States
Recommended Citation:
Tobin D.,Revercomb H.,Knuteson R.,et al. Suomi-NPP CrIS radiometric calibration uncertainty[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(18)