【摘要】 选用浮标、志愿观测船舶(VOS)数据作为验证数据对MODIS Aqua,MODIS Terra,AVHRR-OI,OSTIA和RTG五种SST日产品进行了时相差异、近海SST偏差和SST偏差区域整体差异分析的质量评价,以期为日产品的后续应用提供依据。结果表明:不同分析方案得到结论基本一致,在时相差异方面,各季节及年度分析显示各日产品优劣特性相近,其中AVHRR-OI最优(年数据分析回归系数为0.973 6,R2为0.976 0,RMSE为0.71℃),RTG、MODIS Aqua和MODIS Terra次之,OSTIA最差(年数据分析回归系数为0.945 4,R2为0.943 7,RMSE为1.08℃);在近海区域,AVHRR-OI比其他日产品能更真实地反映海表温度状况,OSTIA最差(二者Grade分别为30和13);在海洋表面区域整体特性方面,AVHRR-OI日产品质量在研究区海域存在更少的高正值和低负值,且均值和RMSE也更理想(最低仅分别为0.40和0.59℃);而RTG和OSTIA则差于AVHRR-OI。更多还原

【Abstract】 Five SST products(MODIS Aqua,MODIS Terra,AVHRR-OI,OSTIA and RTG)are validated and compared using measurements from VOS and buoys.Validation result on the seasonal basis shares the similar characteristics with that on the annual basis,which shows that among all the 5products,AVHRROI SST performs the best(the yearly regression coefficient,R2 and RMSEare 0.973 6,0.976 0,and 0.71℃respectively),followed by RTG,MODIS Aqua,and MODIS Terra.Performance of OSTIA is worst;the yearly regression coefficient,R2 and RMSEare 0.945 4,0.943 7,and 1.08℃respectively.AVHRROI SST has less high-positive and low-negative deviations than RTG and OSTIA.更多还原