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| 利用AIRS数据交叉辐射定标SVISSR分裂窗通道 | |
| 引用本文： | 蒋耿明,延昊,马灵玲.利用AIRS数据交叉辐射定标SVISSR分裂窗通道[J].遥感学报,2009,13(5):797-807. |
| 作者姓名： | 蒋耿明 延昊 马灵玲 |
| 作者单位： | 1. 复旦大学,波散射与遥感信息教育部重点实验室,上海,200433 2. 中国气象局,国家气象中心,北京,100081 3. 中国科学院,光电研究院,北京,100190 |
| 基金项目： | 复旦大学青年科学基金(08FQ06)和国家863计划微波遥感技术实验室研究基金。 |
| 摘 要： | 利用高精度和稳定的AIRS/Aqua(Atmospheric InfraRed Sounder on board Aqua)数据对SVISSR/FY- 2C(Stretched Visible and Infrared Spin Scan Radiometer onboard FengYun 2C)的两个分裂窗通道IR1(InfraRed 1, 10.9 μm)和IR2(InfraRed 2, 11.9μm)进行交叉辐射定标的方法, 并利用赤道附近2006年12月和2007年12月的AIRS和SVISSR数据完成了交叉辐射定标, 结果表明, SVISSR数据与卷积得到的AIRS数据高度线性相关, SVISSR/FY-2C传感器的两个分裂窗通道不仅存在定标误差, 而且定标误差随时间的变化呈现增大的趋势。相对于AIRS/Aqua测量值, 当SVISSR的通道亮温从220 K变化到340 K时, 2006年12月IR1通道的温度调整量从5.8 K变化到-4.4 K, 而2007年12月IR1通道的温度调整量从6.9 K变化到-5.1 K; 2006年12月IR2通道的温度调整量从2.2 K变化到-1.5 K, 而2007年12月IR2通道的温度调整量从6.3 K变化到-6.1 K。 |
| 关 键 词： | 交叉辐射定标 SVISSR/FY-2C AIRS/Aqua 分裂窗通道 |
| 收稿时间： | 2008/5/16 0:00:00 |
| 修稿时间： | 7/2/2008 12:00:00 AM |
Intercalibration of the split-window channels of SVISSR/FY-2C against AIRS/Aqua channels |
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| JIANG Geng-ming,YAN Hao and MA Ling-ling.Intercalibration of the split-window channels of SVISSR/FY-2C against AIRS/Aqua channels[J].Journal of Remote Sensing,2009,13(5):797-807. | |
| Authors: | JIANG Geng-ming YAN Hao and MA Ling-ling |
| Institution: | 1. The Key Lab of Wave Scattering and Remote Sensing Information (MOE), Fudan University, Shanghai 200433, China;2. National Meteorological Center, China Meteorological Administration, Beijing 100081, China;3. Academy of Opto-electronics, Chinese Academy of Sciences, Beijing 100190, China |
| Abstract: | This paper addresses the intercalibration of the two split-window channels IRI (10.9μm) and IR2 (11.9μm) of SV1SSR (Stretched Visible and Infrared Spin Scan Radiometer) onboard the geostationary satellite FY-2C (FengYun 2C) against the most accurate and stable AIRS (Atmospheric Infrared Sounder) sensor onboard the polar-orbit satellite Aqua. The intercalibration was implemented using both the AIRS and SVISSR data around the equator in December of 2006 and 2007. The results reveal that: (1) the SVISSR data are highly linearly correlated with the convoived AIRS data, (2) calibration errors exist in SVISSR channels IR1 and IR2, and (3) the discrepancies become larger with time increment. With respect to the AIRS/Aqua measurements, when the brighmess temperatures in SVISSR channels change from 220K to 340K, the temperature adjustment for IR1 in Dec., 2006 varies from 5.8K to -4.4K, and changes from 6.9K to -5.1K in Dee., 2007; The temperature adjustment for IR2 in Dec., 2006 goes from 2.2K to -1.5K, and varies from 6.3K to -6.1K in Dec., 2007. |
| Keywords: | intercalibration SVISSR/FY-2C AIRS/Aqua split-window channels |
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