我国范围内多个再分析地表通量数据集的可信度分析  

Analysis on the reliability of reanalysis surface flux datasets for China

作　　者：韩兴 汤燕冰[2] 

机构地区：[1]金华气象台,浙江金华321000 [2]浙江大学地球科学系,浙江杭州310027

出　　处：《浙江大学学报（理学版）》2006年第2期231-239,共9页Journal of Zhejiang University（Science Edition）

摘　　要：利用NCEP/NCAR(NCEP1)、NCEP/DOE(NCEP2)及ECMWF的再分析地表通量(感热和潜热通量)资料,以及由经验公式计算得出的我国地表通量的气候值(以下简称气候值),采用可视化分析、统计分析和天气气候学诊断方法,分析了三组再分析数据集的地表感热、潜热通量,以及基于地表热通量的鲍文比和地表热源在不同季节的空间分布和年变化,并与气候值做了比较.结果显示,尽管存在一些共同的问题(如三组再分析数据集潜热通量的值明显偏大),但不同再分析地表通量所反映的我国不同季节地表感、潜热通量的空间分布和年变化趋势与气候值的分布是一致的.总的来看,ECMWF再分析是最合理的,其次为NCEP2,最后为NCEP1.Using the visualizing technique, correlation method and diagnostic analysis, the reliability of several model based reanalyses, including NCEP/NCAR（NCEP1）, NCEP/DOE（NCEP2）and ECMWF, of surface sensible and latent heat fluxes was studied. The results show that the patterns of seasonal distribution and annual variation of both heat fluxes from three different reanalysis datasets agree well with those based on the climatic means derived from indirect observations, though there are some common problems with the different datasets. In general, ECMWF reanalysis datasets are most reasonable, followed by NCEP2 datasets.

关 键 词：再分析数据集 地表通量 中国 

分 类 号：P468.0[天文地球—大气科学及气象学]