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OALib Journal期刊
ISSN: 2333-9721
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西北太平洋noaaavhrr海表温度日变化校正研究*
Keywords: 海表温度,日变化,西北太平洋,noaaavhrr,aquaamsr-e
Abstract:
？白天,太阳辐射将海面上层加热,会出现海表温度日变化的情况，该变化对海气热交换以及海洋生态等的研究具有重要意义,且在不同海域有着不尽相同的变化规律。文章首先介绍了海表温度日变化经验和数值模型,然后在西北太平洋海域范围内,利用美国国家海洋和大气管理局(nationaloceanicandatmosphericadministration,noaa)的改进型甚高分辨率辐射计(advancedveryhighresolutionradiometer,avhrr)海表温度数据、美国宇航局“水”卫星aqua上先进微波扫描辐射计(advancedmicrowavescanningradiometerforeos,amsr-e)的海面风速和经计算得到的太阳辐射强度数据,通过对已有经验模型系数进行重新回归拟合,得到在该海域noaaavhrr海表温度数据日变化的经验模型。验证结果显示,重新回归系数后的模型在西北太平洋海域内计算所得的海表温度日变化大小与avhrr数据本身计算所得结果相比,其平均偏差为其0.01℃,标准偏差为0.22℃,可以在该海域内较好地对noaaavhrr海表温度数据进行日变化校正。
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