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首页> 外文会议>2006 IEEE US/EU Baltic International Symposium >On suitability of MODIS satellite chlorophyll products for the Baltic Sea conditions
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On suitability of MODIS satellite chlorophyll products for the Baltic Sea conditions

机译：关于MODIS卫星叶绿素产品在波罗的海条件下的适用性

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摘要

The amount of phytoplankton, usually expressed as concentration of chlorophyll-a, is one of the most important parameters in describing state of water bodies. The amount of chlorophyll-a in coastal waters is extremely variable both spatially and temporally. Therefore, the classical monitoring programs, which are based on infrequent measurements in a few fixed stations, or ships of opportunity cannot provide spatial and/or temporal coverage needed to determine the amount of chlorophyll-a. Remote sensing could be the tool to provide necessary information. Chlorophyll retrieval algorithms proposed by different authors are used by space agencies to provide satellite derived chlorophyll products. These products are relatively accurate in Case I (oceanic) waters. However, they often fail in Case II (coastal) waters. We have compared MODIS chlorophyll product with in situ measurements carried out in the frame of Estonian National Monitoring Program. The results indicate that correlation between satellite derived chlorophyll estimates an in situ measurement results is very pure in Estonian coastal waters and there is strong need to develop local chlorophyll retrieval algorithms. This is a task our group is currently working on.
机译：浮游植物的量通常表示为叶绿素-a的浓度，是描述水体状态的最重要参数之一。沿海水域中的叶绿素-a的量在空间和时间上都变化很大。因此，基于少量固定站或机会船中不频繁测量的经典监视程序无法提供确定叶绿素a量所需的空间和/或时间覆盖范围。遥感可能是提供必要信息的工具。由不同作者提出的叶绿素检索算法被太空机构用来提供卫星衍生的叶绿素产品。这些产品在案例一（海洋）水域中相对准确。但是，它们通常在案例II（沿海）水域中失败。我们将MODIS叶绿素产品与在爱沙尼亚国家监测计划框架内进行的原位测量进行了比较。结果表明，在爱沙尼亚沿海水域中，卫星衍生的叶绿素估计实地测量结果之间的相关性非常纯，因此强烈需要开发本地叶绿素检索算法。这是我们小组当前正在处理的任务。

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