干旱区生态环境知识资源中心(Arid): Revisiting Pseudo Invariant Calibration Sites (PICS) Over Sand Deserts for Vicarious Calibration of Optical Imagers at 20 km and 100 km Scales

Arid

DOI	10.3390/rs11101166
	Revisiting Pseudo Invariant Calibration Sites (PICS) Over Sand Deserts for Vicarious Calibration of Optical Imagers at 20 km and 100 km Scales
	Bacour, Cedric 1; Briottet, Xavier 2; Breon, Francois-Marie 3; Viallefont-Robinet, Francoise 2; Bouvet, Marc 4
通讯作者	Bacour, Cedric
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2019
卷号	11 期号:10
英文摘要	In-flight assessment of the radiometric performances of space-borne instruments can be achieved by means of vicarious calibration over Pseudo-Invariant Calibration Sites (PICS). PICS are chosen for the high temporal stability of their surface optical properties combined with a high spatial homogeneity. A first list of the main desert PIC sites was identified 20 years ago for the calibration of medium/coarse spatial resolution instruments in the solar spectral range (400-2500 nm). They are located in the Saharan desert and in the Arabian Peninsula. Six of them have since been endorsed by the CEOS/WGCV/IVOS as reference Calibration/Validation test sites. In this study, we have revisited the list of desert PIC sites at the global scale with the aim of (1) assessing if these twenty PICS are still optimal, in terms of temporal stability and spatial uniformity, and using up-to-date multi-spectral remote sensing data, and (2) identifying new calibration sites distributed over other areas of the world. We verified that the original sites remain very relevant, although alternate locations in their close vicinity have slightly better characteristics. We proposed four additional targets with similar characteristics, some of which may offer easier logistical access. In order to support radiative transfer simulations of satellite sensor measurements over the sites, we assessed the abilities of several semi-empirical models to reproduce the spectro-directional signatures of six IVOS sites and the four new candidate sites, and we derived climatologies of the main atmospheric properties (trace gas column load and aerosol optical depth).
英文关键词	calibration sand desert PICS surface optical properties BRDF AOD cloud fraction trace gas climatology
类型	Article
语种	英语
国家	France ; Netherlands
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000480524800024
WOS关键词	BIDIRECTIONAL REFLECTANCE SPECTROSCOPY ; IN-FLIGHT CALIBRATION ; RADIOMETRIC CALIBRATION ; ABSOLUTE CALIBRATION ; SURFACE ; ALBEDO ; MODEL ; RETRIEVAL ; SENSORS ; MODIS
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/2XILL650/218369
作者单位	1.NOVELTIS, 153 Rue Lac, F-31670 Labege, France; 2.Off Natl Etud & Rech Aerosp, 2 Ave Edouard Belin, F-31055 Toulouse, France; 3.Univ Paris Saclay, LSCE, IPSL, CEA,CNRS,UVSQ, F-91191 Gif Sur Yvette, France; 4.European Space Agcy, Keplerlaan 1,PB 299, NL-2200 AG Noordwijk, Netherlands
推荐引用方式 GB/T 7714	Bacour, Cedric,Briottet, Xavier,Breon, Francois-Marie,et al. Revisiting Pseudo Invariant Calibration Sites (PICS) Over Sand Deserts for Vicarious Calibration of Optical Imagers at 20 km and 100 km Scales[J],2019,11(10).
APA	Bacour, Cedric,Briottet, Xavier,Breon, Francois-Marie,Viallefont-Robinet, Francoise,&Bouvet, Marc.(2019).Revisiting Pseudo Invariant Calibration Sites (PICS) Over Sand Deserts for Vicarious Calibration of Optical Imagers at 20 km and 100 km Scales.REMOTE SENSING,11(10).
MLA	Bacour, Cedric,et al."Revisiting Pseudo Invariant Calibration Sites (PICS) Over Sand Deserts for Vicarious Calibration of Optical Imagers at 20 km and 100 km Scales".REMOTE SENSING 11.10(2019).