首页    期刊浏览 2024年11月05日 星期二
登录注册

文章基本信息

  • 标题:Multiple‐Instance Superparameterization: 2. The Effects of Stochastic Convection on the Simulated Climate
  • 本地全文:下载
  • 作者:Todd R. Jones ; David A. Randall ; Mark D. Branson
  • 期刊名称:Journal of Advances in Modeling Earth Systems
  • 电子版ISSN:1942-2466
  • 出版年度:2019
  • 卷号:11
  • 期号:11
  • 页码:3521-3544
  • DOI:10.1029/2019MS001611
  • 出版社:John Wiley & Sons, Ltd.
  • 摘要:The cloud‐permitting model (CPM) of the superparameterized Community Atmosphere Model (SP‐CAM) is a stochastic parameterization. As reported in a companion paper, we have created a variant of SP‐CAM, called MP‐CAM, that uses the averaged feedback of 10 independent two‐dimensional CPMs in each global model column, in place of the single CPM of SP‐CAM. This ensemble‐averaged feedback is interpreted as an approximation to the feedback from a deterministic parameterization. We present evidence that the multiple‐instance superparameterization of MP‐CAM is indeed more deterministic than SP‐CAM. The climates of the SP and MP configurations are compared, giving particular attention to extreme precipitation events and convectively coupled large‐scale tropical weather systems, such as the Madden‐Julian Oscillation. A number of small but significant changes in the mean state climate are uncovered, and the deterministic parameterization slightly degrades the Madden‐Julian Oscillation simulation.
  • 关键词:climate;parameterization;convection;stochastic;deterministic;MJO
国家哲学社会科学文献中心版权所有