黄河源区土壤温湿和大气参量变化特征

利用中国科学院西北生态环境资源研究院玛曲土壤温湿观测网2008—2009年、2013—2014年数据验证了3套再分析资料ERA-Interim,CFSR（Climate Forecast System Reanalysis）和JRA-55（Japanese 55-year Reanalysis）在黄河源区的适用性,结合中国气象数据网玛曲气象站1980—2014年观测资料与CLM4.5（Community Land Model4.5）进一步分析了黄河源区近35年气候变迁、土壤温湿分布和变化,结果表明：CFSR能够较好地描绘黄河源区土壤湿度变化,ERA-Interim对于土壤温度刻画能力更强,JR...

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Bibliographic Details
Published in应用气象学报 Vol. 28; no. 1; pp. 98 - 108
Main Author 陈金雷 文军 刘蓉 贾东于 王作亮 罗琪 谢琰
Format Journal Article
LanguageChinese
Published 中国科学院西北生态环境资源研究院陆面过程与气候变化重点实验室，兰州 730000 2017
中国科学院大学，北京 100049%中国科学院西北生态环境资源研究院陆面过程与气候变化重点实验室,兰州,730000
Subjects
CLM4.5
土壤温度
土壤湿度
气候突变
黄河源区
CLM4.5
气候突变
soil moisture
土壤温度
黄河源区
土壤湿度
soil temperature
abrupt change of climate
SRYR
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ISSN1001-7313
DOI10.11898/1001-7313.20170109

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Summary:利用中国科学院西北生态环境资源研究院玛曲土壤温湿观测网2008—2009年、2013—2014年数据验证了3套再分析资料ERA-Interim,CFSR（Climate Forecast System Reanalysis）和JRA-55（Japanese 55-year Reanalysis）在黄河源区的适用性,结合中国气象数据网玛曲气象站1980—2014年观测资料与CLM4.5（Community Land Model4.5）进一步分析了黄河源区近35年气候变迁、土壤温湿分布和变化,结果表明：CFSR能够较好地描绘黄河源区土壤湿度变化,ERA-Interim对于土壤温度刻画能力更强,JRA-55效果较差;35年来气温、土壤温湿总体呈上升趋势且发生突变;近年来10 crm土壤温湿有暖干化趋势,降水量稍有增加,土壤冷季冻结周期变短,暖季持续时间拉长;CLM4.5模拟精度高,能够较好地刻画源区土壤温湿变化细节,两湖及黄河周边暖季为冷湿中心,冷季为暖干中心。
Bibliography:11-2690/P
The source region of the Yellow River（SRYR） located in the northeast of the Tibetan Plateau,is the crucial water conservation area.Soil temperature moisture variations and associated climate effects have important implications to the change of runoff.Three kinds of frequently used reanalysis datasets,ERAInterim,CFSR,and JRA-55 are tested using field observations of Maqu Soil Temperature Moisture Network so as to find the optimal one for SRYR.Combining with observations of Maqu Station,the climate changes in recent 35 years and the temporal variation of soil moisture temperature are analyzed.In addition,their spatial variations are depicted by reanalysis datasets and CLM4.5（Community Land Model4.5）.Main results are as follows.CFSR is the best dataset to depict the soil moisture variation,and ERA-Interim is better on soil temperature,while JRA-55 is unsuited.Soil temperature has an indication to the climate change,but its response is less significant than air temperature.Soil moisture has an increasing
ISSN:1001-7313
DOI:10.11898/1001-7313.20170109