干旱区生态环境知识资源中心(Arid): Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference

Arid

DOI	10.3390/rs12081269
	Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference
	Yu, Shanshan 1; Rosenberg, Robert 1; Bruegge, Carol 1; Chapsky, Lars 1; Fu, Dejian 1; Lee, Richard 1; Taylor, Thomas 2; Cronk, Heather 2; O'; Dell, Christopher 2; Angal, Amit 3; Xiong, Xiaoxiong 4; Crisp, David 1; Eldering, Annmarie 1
通讯作者	Yu, Shanshan
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2020
卷号	12 期号:8
英文摘要	With three imaging grating spectrometers, the Orbiting Carbon Observatory-2 (OCO-2) measures high spectral resolution spectra (lambda/Delta lambda approximate to 19,000) of reflected solar radiation within the molecular oxygen (O-2) A-band at 0.765 mu m and two carbon dioxide (CO2) bands at 1.61 and 2.06 mu m. OCO-2 uses onboard lamps with a reflective diffuser, solar observations through a transmissive diffuser, lunar measurements, and surface targets for radiometric calibration and validation. Separating calibrator aging from instrument degradation poses a challenge to OCO-2. Here we present a methodology for trending the OCO-2 Build 8R radiometric calibration using OCO-2 nadir observations over eight desert sites and nearly simultaneous observations from Moderate Resolution Imaging Spectroradiometer (MODIS) with sensor viewing zenith angles of 15 +/- 0.5 degrees. For the O-2 A-band, this methodology is able to quantify a drift of -0.8 +/- 0.1% per year and capture a small error in correcting the aging of the solar calibrator. For the other two OCO-2 bands, no measurable changes were seen, indicating less than 0.1% and less than 0.3% per year drift in the radiometric calibration of Band 2 and Band 3, respectively.
英文关键词	radiometric calibration validation OCO-2 MODIS pseudo invariant calibration sites
类型	Article
语种	英语
国家	USA
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000534628800042
WOS关键词	DESERT SITES ; PERFORMANCE ; VALIDATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318965
作者单位	1.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; 2.Cooperat Inst Res Atmosphere, Ft Collins, CO 80521 USA; 3.Sci Syst & Applicat Inc, Lanham, MD 20706 USA; 4.NASA, Goddard Space Flight Ctr, Sci & Explorat Directorate, Greenbelt, MD 20706 USA
推荐引用方式 GB/T 7714	Yu, Shanshan,Rosenberg, Robert,Bruegge, Carol,et al. Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference[J],2020,12(8).
APA	Yu, Shanshan.,Rosenberg, Robert.,Bruegge, Carol.,Chapsky, Lars.,Fu, Dejian.,...&Eldering, Annmarie.(2020).Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference.REMOTE SENSING,12(8).
MLA	Yu, Shanshan,et al."Stability Assessment of OCO-2 Radiometric Calibration Using Aqua MODIS as a Reference".REMOTE SENSING 12.8(2020).