| MODIS逐日积雪产品去云算法研究 |
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| 引用本文： | 黄晓东,郝晓华,王玮,冯琦胜,梁天刚.MODIS逐日积雪产品去云算法研究[J].冰川冻土,2012,34(5):1118-1126. |
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| 作者姓名： | 黄晓东 郝晓华 王玮 冯琦胜 梁天刚 |
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| 作者单位： | 1. 兰州大学 草地农业科技学院 草地农业生态系统国家重点实验室, 甘肃 兰州 730020;2. 中国科学院 寒区旱区环境与工程研究所, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目，西部博士资助项目 |
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| 摘 要： | 由于积雪和云的反射特性, 使用光学遥感监测积雪受到天气的严重干扰, 对研究区云量的分析表明, 无论是MOD10A1还是MYD10A1, 云都是影响该产品对研究区积雪进行实时监测的最大影响因素. 综合不同去云方法, 利用MODIS逐日积雪产品和被动微波数据AMSR-E雪水当量产品, 生成了MODIS逐日无云积雪图像, 并利用研究区85个地面气象观测台站提供的雪深数据对合成的单日无云积雪产品进行验证. 结果表明: 当积雪深度>3 cm时, 新产品的积雪分类精度达到91.7%, 该产品对实时监测青藏高原积雪动态变化具有重要的使用价值.
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| 关 键 词： | MODIS 积雪覆盖 去云算法 青藏高原 |
| 收稿时间： | 2012-03-02 |
| 修稿时间： | 2012-06-14 |
Algorithms for Cloud Removal in MODIS Daily Snow Products |
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| HUANG Xiao-dong,HAO Xiao-hua,WANG Wei,FENG Qi-sheng,LIANG Tiangang.Algorithms for Cloud Removal in MODIS Daily Snow Products[J].Journal of Glaciology and Geocryology,2012,34(5):1118-1126. |
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| Authors: | HUANG Xiao-dong HAO Xiao-hua WANG Wei FENG Qi-sheng LIANG Tiangang |
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| Institution: | 1. State Key Laboratory of Grassland Agro-ecology Systems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou Gansu 730020, China;2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 73000, China |
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| Abstract: | Because of the similar reflective characteristics of snow and cloud, the weather status can affect the snow monitoring by using optical remote sensing seriously. Cloud amount analysis during 2010-2011 snow season shows that the cloud cover is the major limitation to monitoring the snow cover using MOD10A1 and MYD10A1. By the use of MODIS daily snow products and AMSR-E Snow Water Equivalent products, several cloud elimination methods were integrated to produce MODIS daily cloudless snow products. To validate the accuracy of the new composited snow product, the information of snow depths from 85 climate stations in the study area was used. The snow classification accuracy of the new daily snow products reaches 91.7% when snow depth larger than 3 cm, which can be used for monitoring snow cover dynamic change in the Tibetan Plateau. |
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| Keywords: | MODIS snow cover algorithm for cloud removal Tibetan Plateau |
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