DevelopmentoceancolorremotesensinginChinain2002.ppt

1、Development ocean color remote sensing in China in 2002,Pan Delu He Xinqing etc.（潘德炉、何贤强等）(Second Institute of Oceanography, SOA)Hangzhou, 310012, ,1、SZ-3 spaceship2、HY-1/COCTS3 、What plan in 20034、Conclusion,Development ocean color remote sensing in China in 2002,Satellite programs for marine remot

2、e sensing in China,1988 1990 1999 2002 2004 2005,FY-1A FY-1B FY-1C FY-1D FY- 3,HY-1A HY-1B FY- 2,SZ-3,机械制冷机工作温度: 85K,Main characters of CMODIS,Test area 1 Yellow Sea黄海测区,共完成24个站位的表面、水中光学特性，场区上空大气光学特性，以及气象与其它海洋物理观测量等很有价值的数据。,滩涂测区,嵊泗花乌测区,1,2,3,4,5,东海地面配合试验测区分布,海洋二所,卫星中心,海洋三所,Test area 2East China Sea,

3、Test area 3 South China Sea (南海测区),Jun,2-740 station 54M data在6月2日-7月2日期间共进行40站位测量，54M数据量,Satellite data to be used for comparing and crossing calibration 用于比较的卫星资料,SeaWiFSMODISAVHRRFY-1D,星与星对比测量,SeaWiFS,FOV,交叉定标法（Cross-Calibration）,利用SeaWiFS进行921CMODIS评价和定标的图径,星-星对比的过程图,交叉定标法（Cross-Calibration）,CMO

4、DS62 14:17,SeaWiFS6/2 12:00,Comparing the top radiance of CMODIS to SeaWiFS 接收总能量的比较,FOV,CMODIS,SeaWiFS,FOV,Comparing the top radiance of CMODIS to SeaWiFS 接收总能量的比较,Crossing-calibration data星-星定标采用的数据,Comparing water radiance of SEAWIFS and CMODIS离水辐射率对比,交叉定标系数的确定 L=a+b.L(s)+c.L2(s),CMODIS data atmo

5、spheric correction 数据大气校正技术,Lt = Lr + (La + Lra) + tLwc + TLg + t Lw,CMODIS总辐亮度Lt,大气参数（气压、臭氧浓度、海面风速，湿度等）,瑞利散射计算,气溶胶散射计算,大气透过率计算,离水辐亮度,归一化离水辐亮度,图 2 CMODIS大气校正流程,Water leaving radiance 大气校正后的结果,CMODIS 493,SEAWIS 490,Comparing the water leaving radiance of MODIS and SeaWiFS after atmospheric correction

6、 大气校正后的结果比较,与实测的结果比较,由CMODIS得到的连续光谱与实测光谱的比较,信息提取和应用-像谱合一光谱,Chlorophyll a on April,20 2002,CMODIS,Suspended material on April,20 2002,CMODIS,1、SZ-3 spaceship2、HY-1/COCTS3、Conclusion,Development ocean color remote sensing in China in 2002,HY-1,HY-1 Payload,1. COCTS- Chinese Ocean Color and Temperature

7、 Scannerby SITP2. CZI- Coastal Zone Imager (CCD Cameral) by CAST,Comparing data and area,Cross-calibration area of COCTS and SeaWiFS on June 21,2002,COCTS,SeaWiFS,Comparing top radiance of COCTS and SeaWiFS,Comparing the calibration coefficient,Channel 1,Comparing the three different results of cali

8、bration method,Channel 2,Comparing the three different results of calibration method,Comparing the three different results of calibration method,Channel 3,Chlorophyll a from COCTS and SeaWiFS,By COCTS,By SeaWiFS,Suspended material from COCTS and SeaWiFS,By SeaWiFS,1、SZ-3 spaceship2、HY-1/COCTS3、What

9、plan in 20034、Conclusion,Development ocean color remote sensing in China in 2002,2003 validation areas (March 20-Aple 30; Sep. 20-Oct. 30),1、SZ-3 spaceship2、HY-1/COCTS3、What plan in 20034、Conclusion,Development ocean color remote sensing in China in 2002,Conclusion 1,1. The methodology of satellite

10、to satellite crossing calibration has been applied for CMODIS/SZ-3 and COCTS/HY-1. The results show this method is economical and practical way, especially for developing countries.,Conclusion 2,2. The CMODIS/SZ-3 and COCTS/HY-1 data are reasonable to map the chlorophyll, suspended material and temperature oceanography. The algorithm of processing above data are needed to improve in order to integrate with other space RS data.,