结合可见光近红外和微波遥感估算藏北高原日蒸散发量
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中国科学院寒区旱区环境与工程研究所,中国科学院寒区旱区环境与工程研究所,中国科学院寒区旱区环境与工程研究所,中国科学院寒区旱区环境与工程研究所,中国科学院寒区旱区环境与工程研究所

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国家重大科学研究计划全球变化研究项目(2010CB951701);国家自然科学基金(41405017&41405079);中国科学院西部之光项目(29Y329941)


Hourly variation of evapotranspiration estimated by visible infrared and microwave data over the northern Tibetan Plateau
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Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences

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    摘要:

    利用FY-2E静止气象卫星可见光近红外和FY-3B极轨气象卫星微波资料, 结合地面观测资料, 基于陆表能量平衡算法(Surface Energy Balance System, SEBS), 反演了藏北高原地表净辐射、土壤热通量、感热及潜热通量的空间日变化过程.利用那曲高寒气候环境观测站观测资料对结果进行了有效性验证, 潜热通量的均方根误差为28.22W·m-2.此外, 还对整个藏北高原夏季空间地表能量分量的条件期望进行统计分析, 探讨了该区域不同地表温度对应的有效能量分配方式的统计特征.结果表明, 区域总体蒸散发量介于2.0~4.0mm之间.

    Abstract:

    The net radiation, ground heat flux, sensible heat flux and latent heat flux over the Northern Tibetan Plateau at different times of the day were estimated by using land surface observation, the surface energy balance system algorithm, and FY-2E geostationary meteorological satellite visible infrared and FY-3B polar-orbiting satellite microwave remote data. The results from the model agree well with the ground observations from Naqu Alpine Climate Stations with 28.22W·m-2 RMSE in hourly scale. The condition expectation of surface energy components during the summer time of the Northern Tibet were analyzed, and different surface temperature corresponds to the effective energy distribution were also discussed. The results shows regional ET was ranged between 2.0~ 4.0mm over the Northern Tibetan Plateau.

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刘蓉,文军,王欣,胡泽勇,康悦.结合可见光近红外和微波遥感估算藏北高原日蒸散发量[J].红外与毫米波学报,2015,34(2):211~217]. LIU Rong, WEN Jun, WANG Xin, HU Ze-Yong, KANG Yue. Hourly variation of evapotranspiration estimated by visible infrared and microwave data over the northern Tibetan Plateau[J]. J. Infrared Millim. Waves,2015,34(2):211~217.]

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  • 收稿日期:2014-01-08
  • 最后修改日期:2015-01-26
  • 录用日期:2014-03-18
  • 在线发布日期: 2015-05-18
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