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基于星载激光雷达的AOD与海面风速关系研究

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Keywords: 遥感,星载激光雷达,气溶胶,AOD,海面风速

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Abstract:

海面上空气溶胶的产生和传输在一定程度上和风有关,研究气溶胶和风速间的关系,对增加大气模式的预测精度有重要意义。文中使用CALIPSO卫星CALIOP激光雷达L2(V3.01)气溶胶层与云层数据,与准同步AQUA卫星的AMSR-E海面风速数据,采用2007年和2008年的1月、4月、7月、10月共8个月的观测数据,研究波长为532nm的气溶胶光学厚度(AOD)与海面风速间的关系及其随季节、年份的变化。结果显示,无云条件下,全球海洋上空AOD与风速存在关系当风速在0-12m/s时,AOD随风速增大而增加,当风速在4-12m/s时,AOD与风速近似线性关系,当风速>14m/s时,AOD趋于平稳。

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