Validation of ECMWF and NCEP–NCAR Reanalysis Data in Antarctica

被引：3

作者：

于乐江 ^{[1
]}

张占海 ^{[1
]}

周明煜 ^{[1
]}

Donald LENSCHOW ^{[2
]}

Hsiaoming HSU ^{[2
]}

吴辉碇 ^{[3
]}

孙波 ^{[1
]}

机构：

[1] Polar Research Institute of China

[2] National Center for Atmospheric Research, Boulder, CO , USA

[3] National Marine Environmental Forecast Center

来源：

Advances in Atmospheric Sciences | 2010年 / 27卷 / 05期

关键词：

reanalysis data; interannual variability; intraseasonal variability; surface layer; upper layer; Antarctica;

D O I：

暂无

中图分类号：

P467 [气候变化、历史气候];

学科分类号：

0706 ; 070601 ;

摘要：

The European Center for Medium-Range Weather Forecast (ECMWF) Re-Analysis (ERA-40) and the National Centers for Environmental Prediction-National Center for Atmospheric Research (NCEP-NCAR) ECMWF (ERA-40) and NCEP-NCAR reanalysis data were compared with Antarctic station observations, including surface-layer and upper-layer atmospheric observations, on intraseasonal and interannual timescales. At the interannual timescale, atmospheric pressure at different height levels in the ERA-40 data are in better agreement with observed pressure than that in the NCEP-NCAR reanalysis data. ERA-40 reanalysis also outperforms NCEP-NCAR reanalysis in atmospheric temperature, except in the surface layer where the biases are somewhat larger. The wind velocity fields in both datasets do not agree well with surface-and upper-layer atmospheric observations. At intraseasonal timescales, both datasets capture the observed intraseasonal variability in pressure and temperature during austral winter.

引用

页码：1151 / 1168

页数：18