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国家卫星气象中心 中国遥感卫星辐射测量与定标重点开放实验室, 北京 100081
[ "徐寒列(1985-),女,辽宁葫芦岛人,博士,助理研究员,2013年于中国科学院大气物理研究所获博士学位,主要从事星载光学传感器辐射定标工作。Email:xuhanlie@cma.gov.cn" ]
[ "胡秀清(1974-),男,湖北人,博士,正研级高工。1996年获南京大学学士学位。2004年获北京师范大学硕士学位,2006年起为中科院遥感所在职博士。主要研究方向:卫星光学遥感器的辐射定标,气溶胶、沙尘暴和大气可降水等大气参数的卫星反演算法研究,研发中分辨率光谱成像仪L1辐射定标业务算法。Email:huxq@cma.gov.cn" ]
[ "徐娜(1982-),女,山东烟台人,博士,副研究员。2010年毕业于中科院大气物理研究所获得大气物理学与大气环境理学博士学位。主要研究方向:辐射定标、云微物理特性和大气可降水等卫星遥感反演方法研究。Email:huxq@cma.gov.cn" ]
[ "闵敏(1982-),男,湖北宜昌人,博士,副研究员,2010年于中国科学院大气物理研究所获得博士学位,国家卫星气象中心副研究员,主要从事卫星传感器定标和性能评估、云和气溶胶遥感、大气辐射传输方面的研究。E-mail:minmin@cma.gov.cn" ]
收稿日期:2015-03-17,
修回日期:2015-05-07,
纸质出版日期:2015-07-25
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徐寒列, 胡秀清, 徐娜等. FY-3C/可见光红外扫描辐射计中红外通道太阳污染的识别和修正[J]. 光学精密工程, 2015,23(7): 1874-1879
XU Han-lie, HU Xiu-qing, XU Na etc. Discrimination and correction for solar contamination on mid-infrared band of FY-3C/VIRR[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1874-1879
徐寒列, 胡秀清, 徐娜等. FY-3C/可见光红外扫描辐射计中红外通道太阳污染的识别和修正[J]. 光学精密工程, 2015,23(7): 1874-1879 DOI: 10.3788/OPE.20152307.1874.
XU Han-lie, HU Xiu-qing, XU Na etc. Discrimination and correction for solar contamination on mid-infrared band of FY-3C/VIRR[J]. Editorial Office of Optics and Precision Engineering, 2015,23(7): 1874-1879 DOI: 10.3788/OPE.20152307.1874.
基于风云-3C/可见光红外扫描辐射计(FY-3/CVIRR)的中红外通道(3.7
μ
m)的太阳污染现象和发生规律
分析了太阳污染出现的时空特征
提出了初步判识并修正北半球太阳污染数据的方法
并就太阳污染对定标系数和黑体亮温的影响做了定量的评估。结果表明
对于FY-3C/VIRR的中红外通道
太阳光线照射到定标黑体时所形成的北半球高纬度太阳污染主要出现在太阳天顶角在85°~118°之间的位置时;由太阳污染导致的该区域地球观测亮温日平均偏差为4.5 K左右
最大偏差达到15 K左右。通过对逐日太阳污染数据进行识别
并采用污染前后定标系数进行线性求差值
可以初步修正太阳污染对定标系数带来的异常影响。
On the basis of solar contamination phenomenon and occurrence rules of the mid-infrared channel (3.7
μ
m) in the Fengyun-3C/Visible and Infrared Radiometer(FY-3C/VIRR)
temporal and spatial characteristics of the solar contamination were analyzed. The method to discriminate initially and correct the solar contamination data in the northern hemisphere was proposed and the effect of solar contamination on calibration coefficients and blackbody brightness temperature was evaluated quantitatively. The results show that for the mid-infrared channel (3.7
μ
m) in the FY-3C/VIRR
the solar contamination in the northern hemisphere caused by the sun irradiation on calibrated blackbody will appear at the solar zenith angle between 85°-118°. The daily mean absolute error of blackbody temperature is up to 4.5 K
and the maximum absolute error in a day is up to 15 K. By discrimination of the solar contamination data day by day and calculating the linear difference of calibration coefficients before and after contaminations
the effect of solar contamination on calibration coefficients can be corrected initially.
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杨军,董超华. 新一代风云极轨气象卫星业务产品及应用 [M]. 北京:科学出版社,2011:100-102. YANG J, DONG CH H. The new generation of the polar orbit meteorological satellite business product and applications [M]. Beijing: Science Press, 2011:100-102.
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