| Scopus记录号: | 2-s2.0-85042209301
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| 论文题名: | Spectral cumulus parameterization based on cloud-resolving model |
| 作者: | Baba Y.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2019
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| 卷: | 52, 期:2019-01-02 | | 起始页码: | 309
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| 结束页码: | 334
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| 语种: | 英语
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| 英文关键词: | Cloud-resolving model
; Cumulus parameterization
; Entrainment rate
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| 英文摘要: | We have developed a spectral cumulus parameterization using a cloud-resolving model. This includes a new parameterization of the entrainment rate which was derived from analysis of the cloud properties obtained from the cloud-resolving model simulation and was valid for both shallow and deep convection. The new scheme was examined in a single-column model experiment and compared with the existing parameterization of Gregory (2001, Q J R Meteorol Soc 127:53–72) (GR scheme). The results showed that the GR scheme simulated more shallow and diluted convection than the new scheme. To further validate the physical performance of the parameterizations, Atmospheric Model Intercomparison Project (AMIP) experiments were performed, and the results were compared with reanalysis data. The new scheme performed better than the GR scheme in terms of mean state and variability of atmospheric circulation, i.e., the new scheme improved positive bias of precipitation in western Pacific region, and improved positive bias of outgoing shortwave radiation over the ocean. The new scheme also simulated better features of convectively coupled equatorial waves and Madden–Julian oscillation. These improvements were found to be derived from the modification of parameterization for the entrainment rate, i.e., the proposed parameterization suppressed excessive increase of entrainment, thus suppressing excessive increase of low-level clouds. © 2018, The Author(s). |
| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/122486
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Application Laboratory, Japan Agency for Marine-Earth Science and Technology, 3173-25, Showa-machi, Kanazawa-ku, Yokohama, 236-0001, Japan
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| Recommended Citation: | |
Baba Y.. Spectral cumulus parameterization based on cloud-resolving model[J]. Climate Dynamics,2019-01-01,52(2019-01-02)
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