比较了不同卫星遥感影像的海洋监测优劣,分析了MODIS数据海洋监测能力评估的可行性,并阐述评估了技术方法和流程.以渤海为例,依据MOD35源数据,通过数据预处理、典型区选取,统计分析影像覆盖率及云覆盖面积百分率,表明了对渤海常规、季节性,以及应急等诸种海区要素监测的不同效果,弥补了以往类似工作的迟后性.%With recent advances in sensors, remote sensing technology has become one of the best methods to monitor the condition of ocean. However, due to the lack of application-oriented scientific analysis based on the imaging capability, the remote sensing data are difficult to meet the application requirements. By comparing the capabilities of several common remote sensing satellites for ocean monitoring, this paper analyzed the feasibilities of MODIS data, and also presented the processes and the methods in evaluation of ocean monitoring capability. The procedures can be implemented as follows: Firstly, the raw images, which were MOD35 of the Bohai Sea in 2008, have been chosen and preprocessed; Secondly, the imaging capabilities of satellite remote sensing covering the Bohai Sea and their relevant cloud cover rate were counted. Finally, the evaluation capabilities of remote sensing images of the Bohai Sea were analyzed. According to the statistics, remote sensing satellite monitoring capacities for varions elements had been assessed and the results showed different monitoring effects of regular, seasonal and emergency and other elements of the Bohai Sea. Also, the results showed that it was viable in the change monitoring of coastline, coastal land use, as well as SST. Moreover, for the change monitoring of seasonal elements such as sea ice, it was also feasible. However, due to heavy clouds and the limitations of temporal resolution of the satellite remote sensing images, it was relatively weak in real time monitoring for oil spill and red tide.
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