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DOI | 10.1007/s00382-017-3616-y |
Identifying a key physical factor sensitive to the performance of Madden-Julian oscillation simulation in climate models | |
Kim, Go-Un; Seo, Kyong-Hwan | |
2018 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:391-401 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea |
英文摘要 | A key physical factor in regulating the performance of Madden-Julian oscillation (MJO) simulation is examined by using 26 climate model simulations from the World Meteorological Organization's Working Group for Numerical Experimentation/Global Energy and Water Cycle Experiment Atmospheric System Study (WGNE and MJO-Task Force/GASS) global model comparison project. For this, intraseasonal moisture budget equation is analyzed and a simple, efficient physical quantity is developed. The result shows that MJO skill is most sensitive to vertically integrated intraseasonal zonal wind convergence (ZC). In particular, a specific threshold value of the strength of the ZC can be used as distinguishing between good and poor models. An additional finding is that good models exhibit the correct simultaneous convection and large-scale circulation phase relationship. In poor models, however, the peak circulation response appears 3 days after peak rainfall, suggesting unfavorable coupling between convection and circulation. For an improving simulation of the MJO in climate models, we propose that this delay of circulation in response to convection needs to be corrected in the cumulus parameterization scheme. |
英文关键词 | Madden-Julian oscillation YOTC/MJO-TF Climate models Zonal wind convergence Coupling between convection and circulation Cumulus parameterization scheme |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422908700024 |
WOS关键词 | CONVECTIVE MOMENTUM TRANSPORT ; CLOUD-RESOLVING MODEL ; CUMULUS PARAMETERIZATION ; INTRASEASONAL VARIABILITY ; ATMOSPHERIC CIRCULATION ; FORECAST SYSTEM ; PART I ; MJO ; PRECIPITATION ; SCHEME |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35907 |
专题 | 气候变化 |
作者单位 | Pusan Natl Univ, Dept Atmospher Sci, Busan 609735, South Korea |
推荐引用方式 GB/T 7714 | Kim, Go-Un,Seo, Kyong-Hwan. Identifying a key physical factor sensitive to the performance of Madden-Julian oscillation simulation in climate models[J]. CLIMATE DYNAMICS,2018,50:391-401. |
APA | Kim, Go-Un,&Seo, Kyong-Hwan.(2018).Identifying a key physical factor sensitive to the performance of Madden-Julian oscillation simulation in climate models.CLIMATE DYNAMICS,50,391-401. |
MLA | Kim, Go-Un,et al."Identifying a key physical factor sensitive to the performance of Madden-Julian oscillation simulation in climate models".CLIMATE DYNAMICS 50(2018):391-401. |
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