Evaluation of the applicability of a retrospective scheme based on comparison with several difference schemes

• 来源期刊: 中国物理（英文版）
• 关键词: short-term climate prediction difference scheme advection equation retrospective multi time-level scheme
• 年，卷（期）: 2003,（10）
• 页码范围: 1076-1086
• 页数: 11页
• 语种: 英文

摘要

The evaluation of the applicability of a retrospective multi-time-level scheme (RT scheme) is carried out on the basis of comparison with the common leapfrog scheme (LF scheme) and its derivatives, and modified BOTT's positivedefinite schemes used in atmospheric models. Two rational flow field tests confirm that at least the BOTT scheme tested may be applied, but apparently the best results are obtained by the RT scheme. The results of wavelet analysis show that the RT scheme can better extract the useful information from the initial fields, i.e. to memorize many main initial characteristics, such as periods, thus offering a new approach to the short-term climate numerical prediction.