| Validation of ECMWF and NCEP–NCAR Reanalysis Data in Antarctica |
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| 作者姓名： | YU Lejiang ZHANG Zhanhai ZHOU Mingyu Shiyuan ZHONG Donald LENSCHOW Hsiaoming HSU WU Huiding SUN Bo |
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| 作者单位： | Department of Geography,,,, |
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| 基金项目： | This research was partially funded by the Chinese Polar Program Strategic Research Fund (No. 20080218); the National Natural Science Foundation of China (40233032-40640420556); MOST(2006BAB18B03 and 2006BAB18B05) |
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| 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 agre...
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| 关 键 词： | 中期天气预报 NCEP 南极洲 欧洲 数据验证 年际时间尺度 季节内变化 大气观测 |
| 收稿时间： | 9/8/2009 12:00:00 AM |
Validation of ECMWF and NCEP--NCAR Reanalysis Data in Antarctica |
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| YU Lejiang,ZHANG Zhanhai,ZHOU Mingyu,Shiyuan ZHONG,Donald LENSCHOW,Hsiaoming HSU,WU Huiding,SUN Bo.Validation of ECMWF and NCEP--NCAR Reanalysis Data in Antarctica[J].Advances in Atmospheric Sciences,2010,27(5):1151-1168. |
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| Authors: | YU Lejiang ZHANG Zhanhai ZHOU Mingyu Shiyuan ZHONG Donald LENSCHOW Hsiaoming HSU WU Huiding and SUN Bo |
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| Institution: | Polar Research Institute of China, Shanghai 200136,Polar Research Institute of China, Shanghai 200136,Polar Research Institute of China, Shanghai 200136,National Center for Atmospheric Research, Boulder, CO 80307, USA,National Center for Atmospheric Research, Boulder, CO 80307, USA,National Center for Atmospheric Research, Boulder, CO 80307, USA,National Marine Environmental Forecast Center, Beijing 100081,Polar Research Institute of China, Shanghai 200136 |
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| Abstract: | 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. |
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| Keywords: | reanalysis data interannual variability intraseasonal variability surface layer upper layer Antarctica |
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