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遥感技术与应用  2013, Vol. 28 Issue (4): 666-673    DOI: 10.11873/j.issn.1004-0323.2013.4.666
模型与反演     
AMSR-E卫星反演土壤湿度与ECWMF,NECP再分析土壤湿度比较分析
李昂1,2,陆其峰2,杨晓峰2,张建伟1
(1.南京信息工程大学,江苏 南京 210044;2国家卫星气象中心,北京 100081)
AMSR-E Soil Moisture Compared with ECWMF and NECP Soil Moisture
Li Ang1,2,Lu Qifeng2,Yang Xiaofeng2,Zhang Jianwei1
(1.Nanjing University of Information Science&Technology,Nanjing 210044,China;
2.National Satellite Meteorological Center,Beijing 100081,China)
 全文: PDF(6206 KB)  
摘要:

土壤湿度是气象学、气候学研究领域的重要环境因子和过程参数。AMSR-E可提供全球范围的较长时序的卫星反演土壤湿度产品,将ECWMF和NECP再分析资料与AMSR-E土壤湿度产品进行时空比较,在评价三者一致性的同时对AMSR-E土壤湿度进行检验,并进一步使用站点观测资料(土壤湿度、降水量)对中国区域的AMSR-E、ECWMF以及NECP土壤湿度进行检验。结果表明:全球及中国区域AMSR-E、ECWMF与NECP土壤湿度空间分布特征一致性较好,但与ECWMF、NCEP相比AMSR-E土壤湿度在数值上明显偏小,尤其当AMSR-E土壤湿度数值较小时,与另两者的差距较大;三者土壤湿度均与降水量有较好的对应关系,比较而言,ECWMF和NECP土壤湿度与降水量的对应关系更好;与站点土壤湿度相比,ECWMF和NECP土壤湿度偏大,AMSR-E土壤湿度偏小,全国范围内2009年159个站点统计结果显示:ECWMF、NECP与站点的均方根误差(0.107、0.124)小于AMSR-E的均方根误差(0.127)。

关键词: AMSR-EECWMFNECP土壤湿度    
Abstract:

Soil moisture is an important environmental factor and procedure parameter in fields of meteorology and climatology.Global and sequential products of satellite retrieval soil moisture were provided by AMSR-E.In this study,ECWMF and NECP reanalysis data and AMSR-E soil moisture were compared in time and space,the AMSR-E soil moisture was verified with consistency evaluation of three methods which mentioned above and the AMSR-E,ECWMF and NECP soil moisture in China were confirmed by observation data,such as soil moisture and precipitation.The result indicated that AMSR-E,ECWMF and the NECP soil moisture spatial distribution characteristics in globe or China have good consistency,but AMSR-E soil moisture was smaller than the others,especially when the value of the AMSR-E was low,the gap was bigger between them;Besides,the soil moisture and precipitation have perfect corresponding relation and there was better the corresponding relation between ECWMF and NECP relatively;Compared with the soil moisture of observation stations,ECWMF and NECP soil moisture was larger and AMSR-E soil moisture was smaller.Furthermore,the root mean square errors of ECWMF,NECP and observation station were all smaller than AMSR-E during 1 645 times data which acquired on a national scale.

Key words: AMSR-E    ECWMF    NECP    Soil Moisture
收稿日期: 2012-07-03 出版日期: 2013-08-14
:  TP 722.6  
基金资助:

气象行业专项(GYHY201106014,GYHY201206002)和国家自然科学基金项目(40705037)支持。

通讯作者: 张建伟(1965-),男,江苏常州人,教授,主要从事图像处理方面的研究。E-mail:zhangjw@nuist.edu.cn。    
作者简介: 李昂(1987-),男,辽宁大连人,硕士研究生,主要从事陆面同化方面的研究。E-mail:lalaile@126.com。
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引用本文:

李昂,陆其峰,杨晓峰,张建伟. AMSR-E卫星反演土壤湿度与ECWMF,NECP再分析土壤湿度比较分析[J]. 遥感技术与应用, 2013, 28(4): 666-673.

Li Ang,Lu Qifeng,Yang Xiaofeng,Zhang Jianwei. AMSR-E Soil Moisture Compared with ECWMF and NECP Soil Moisture. Remote Sensing Technology and Application, 2013, 28(4): 666-673.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2013.4.666        http://www.rsta.ac.cn/CN/Y2013/V28/I4/666

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