• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in Meteorology >Searching for an Added Value of Precipitation in Downscaled Seasonal Hindcasts over East Africa: COSMO-CLM Forced by MPI-ESM
【24h】

Searching for an Added Value of Precipitation in Downscaled Seasonal Hindcasts over East Africa: COSMO-CLM Forced by MPI-ESM

机译：在东非的次要季节性Hindcasts中寻找额外的降水价值：COSMO-CLM被MPI-ESM迫使

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Downscaling of seasonal hindcasts over East Africa with the regional climate model (RCM) COSMO-CLM (CCLM), forced by the global climate model (GCM) and MPI-ESM, is evaluated.The simulations are done for five months (May to September) for a ten-year period (2000-2009), with the evaluation performed only for June to September. The dry years, 2002 and 2009, and the wet years, 2006 and 2007, are well captured by the models. By using ground based and satellite gridded observation data for evaluation it is found that both COSMO-CLMandMPI-ESM overestimate June to September precipitation over the Ethiopian highlands and in parts of the lowland with respect to all reference datasets. In addition we investigated the potential and real added value for both the RCMand the GCMhindcasts by upscaling (arithmetic mean) the precipitation resolution both in temporal and in spatial scales, over North Ethiopia (EN), South Ethiopia (ES), South Sudan (SS), and Sudan (S). Results inferred that using the RCM for seasonal forecast adds value in capturing extreme precipitation years, especially in the Ethiopian highlands. It is also found that the potential and relative potential added value decrease with decreasing the temporal resolution.
机译：通过全球气候模型（GCM）和MPI-ESM的区域气候模型（RCM）和MPI-ESM迫使东非的季节性Hindcasts令人沮丧。仿真是完成了五个月（5月至9月的仿真）为期十年（2000-2009），评估仅在6月至9月进行。干旱年，2002年和2009年，潮湿的年份，2006年和2007年，由模型拍摄。通过使用地面和卫星网格化的观测数据进行评估，发现COSMO-CLMANDMPI-ESM均高估6月至9月在埃塞俄比亚高地降水以及对所有参考数据集的低地的部分地区。此外，我们调查了RCMAND GCMhinccasts的潜在和实际附加值，通过升级（算术平均值）在南埃塞俄比亚（EN），南·苏丹南埃塞俄比亚（EN），南苏丹（SS） ）和苏丹。结果推断，使用RCM进行季节性预测，增加了捕获极端降水年的价值，特别是在埃塞俄比亚高地。还发现，随着时间分辨率的降低，潜在和相对潜在的增加值降低。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号