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六种遥感海表温度产品的比对分析

DOI: 10.3969/j.issn.0253-4193.2013.04.011, PP. 88-97

Keywords: 海表温度,海表温度梯度,统计参数,波数谱

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Abstract:

海表温度(seasurfacetemperature,SST)产品是研究全球海洋大气系统的重要数据源,在海洋相关领域的研究和应用方面具有重要价值。对2007年1和7月的六种不同SST产品(AVHRR-only,AMSR+AVHRR,NCODA,RSS,RTG-HR和OSTIA)在南大洋阿古拉斯回流(AgulhasReturnCurrent,ARC)与绕极环流交汇区域的产品特性进行了比对统计分析,包括SST分析、SST梯度分析、统计参数分析和波数谱分析。分析结果表明产品之间SST时空变化分布的整体趋势一致,RTG-HR在空间分布上过于平滑,OSTIA解析的大洋锋面最弱,RSS包含噪声较多,NCODA相对其他产品存在较大偏差。发现在AVHRR数据的覆盖率较好的情况下与以红外数据构建的AVHRR-only相比,AMSR数据并不能提供更多的SST信息,反而会降低产品的空间解析能力。

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