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冰川冻土  2015 

CLDAS土壤湿度业务产品的干旱监测应用

DOI: 10.7522/j.issn.1000-0240.2015.0051, PP. 446-453

Keywords: CLDAS-V1.0,土壤相对湿度,干旱监测

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Abstract:

针对2012年中国区域严重的干旱,利用2013年国家气象信息中心发布的中国气象局陆面数据同化系统(CLDAS-V1.0)土壤体积含水量数据集产品,并结合新的中国地表土壤水文参数数据集,计算2012年中国区域土壤相对湿度,依据《气象干旱等级》国家标准进行干旱监测.结果表明该土壤相对湿度数据集能较为全面的反映2012年中国的干旱发生发展的空间特征,在西南、江淮黄淮、华南以及东北等4个主要的干旱区域表现的尤为明显.结果表明,利用土壤容重、田间持水量等信息,结合CLDAS-V1.0实时业务产品,可实时获取时空连续的土壤相对湿度产品,可以实现对中国区域的干旱实时监测.

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