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CALIBRATION AND VALIDATION OF THE HY-2 SCATTEROMETER BACKSCATTER MEASUREMENTS OVER OCEAN
Zhu, Jintai; Dong, Xiaolong; Yun, Risheng; Zhu, JT (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Department微波遥感部
Source Publication2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
2014
Language英语
ISSN2153-6996
ISBN978-1-4799-5775-0
AbstractThe Normalized Radar Cross-Sections (NRCS, sigma(0)) measured by spaceborne scatterometer are used to determine the near-surface wind field using the geophysical model functions (GMF). The accuracy of the retrieved wind field is a sensitive function of the radiometric accuracy of the sigma(0) measurements. Therefore, in-orbit calibration is essential for the retrieval of optimum quality geophysical products. In this paper, the scatterometer onboard HY-2A satellite (HY-2 SCAT) is calibrated using Numerical Ocean Calibration (NOC) and its winds retrieval after calibration are validated by winds from global buoys and from the European Centre for Medium-Range Weather Foresting(ECMWF) Numerical Weather Prediction model (NWP). The standard deviations for wind speed and wind direction against buoy winds are better than 1.3 m/s and 15 degrees, indicating that the HY-2 SCAT calibration has been successful and that HY-2 SCAT wind products after NOC are of high quality.
KeywordHy-2a Satellite Scatterometer Calibration And Validation Numerical Ocean Calibration
Conference NameIEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Conference DateJUL 13-18, 2014
Conference PlaceQuebec, CANADA
Indexed ByCPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4337
Collection微波遥感部
Corresponding AuthorZhu, JT (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, CAS Key Lab Microwave Remote Sensing, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zhu, Jintai,Dong, Xiaolong,Yun, Risheng,et al. CALIBRATION AND VALIDATION OF THE HY-2 SCATTEROMETER BACKSCATTER MEASUREMENTS OVER OCEAN[C]:IEEE,2014.
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