...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Climate dynamics >COSMO-CLM~2: a new version of the COSMO-CLM model coupled to the Community Land Model
【24h】

COSMO-CLM~2: a new version of the COSMO-CLM model coupled to the Community Land Model

机译：COSMO-CLM〜2：与社区土地模型耦合的COSMO-CLM模型的新版本

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

This study presents an evaluation of a new biosphere-atmosphere Regional Climate Model. COSMO-CLM2 results from the coupling between the non-hydrostatic atmospheric model COSMO-CLM version 4.0 and the Community Land Model version 3.5 (CLM3.5). In this coupling, CLM3.5 replaces a simpler land surface parameterization (TERRA_ML) used in the standard COSMO-CLM. Compared to TERRAJV1L, CLM3.5 comprises a more complete representation of land surface processes including hydrology, biogeophysics, biogeochemistry and vegetation dynamics. Historical climate simulations over Europe with COSMO-CLM and with the new COSMO-CLM2 are evaluated against various data products. The simulated climate is found to be substantially affected by the coupling with CLM3.5, particularly in summer. Radiation fluxes as well as turbulent fluxes at the surface are found to be more realistically represented in COSMO-CLM2. This subsequently leads to improvements of several aspects of the simulated climate (cloud cover, surface temperature and precipitation). We show that a better partitioning of turbulent fluxes is the central factor allowing for the better performances of COSMO-CLM over COSMO-CLM. Despite these improvements, some model deficiencies still remain, most notably a substantial underestimation of surface net shortwave radiation. Overall, these results highlight the importance of land surface processes in shaping the European climate and the benefit of using an advanced land surface model for regional climate simulations.
机译：这项研究提出了对新的生物圈-大气区域气候模型的评估。 COSMO-CLM2是由非静水大气模型COSMO-CLM 4.0版和社区土地模型3.5版（CLM3.5）之间的耦合产生的。在这种耦合中，CLM3.5替代了标准COSMO-CLM中使用的更简单的地面参数化（TERRA_ML）。与TERRAJV1L相比，CLM3.5更完整地表示了陆地表面过程，包括水文学，生物地球物理学，生物地球化学和植被动力学。针对各种数据产品，对使用COSMO-CLM和新型COSMO-CLM2在欧洲进行的历史气候模拟进行了评估。发现与CLM3.5的耦合对模拟气候有很大影响，尤其是在夏天。发现在COSMO-CLM2中更实际地表示了表面的辐射通量和湍流。随后，这将导致模拟气候的几个方面（云量，地表温度和降水）的改善。我们表明，湍流的更好分配是使COSMO-CLM性能优于COSMO-CLM的中心因素。尽管进行了这些改进，但仍然存在一些模型缺陷，最明显的是大大低估了表面净短波辐射。总体而言，这些结果突显了地表过程在塑造欧洲气候中的重要性以及使用先进的地表模型进行区域气候模拟的好处。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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