Sensitivity of the DRP-4DVar Performance to Perturbation Samples Obtained by Two Different Methods |
| |
| Authors: | ZHAO Juan WANG Bin LASG |
| |
| Affiliation: | ZHAO Juan 1,2 and WANG Bin 1 1 LASG,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 2 Graduate School of the Chinese Academy of Sciences,Beijing 100049 |
| |
| Abstract: | The dimension-reduced projection four-dimensional variational data assimilation (DRP-4DVar) approach utilizes the ensemble of historical forecasts to estimate the background error covariance (BEC) and directly obtains the analysis in the ensemble space.As a result,the quality of ensemble members significantly affects the DRP-4DVar performance.The historical-forecast-based initial perturbation samples are flow-dependent and can describe the error-growth pattern of the atmospheric model and the balanced relat... |
| |
| Keywords: | perturbation sample historical forecast 3DVar |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
|
点击此处可从《》下载免费的PDF全文 |
|
