Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090139 |
Investigating Recent Changes in MJO Precipitation and Circulation in Multiple Reanalyses | |
Wei‐; Ting Hsiao; Eric D. Maloney; Elizabeth A. Barnes | |
2020-10-30 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Recent work using CMIP5 models under RCP8.5 suggests that individual multimodel‐mean changes in precipitation and wind variability associated with the Madden‐Julian oscillation (MJO) are not detectable until the end of the 21st century. However, a decrease in the ratio of MJO circulation to precipitation anomaly amplitude is detectable as early as 2021‐2040, consistent with an increase in dry static stability as predicted by weak‐temperature‐gradient balance. Here, we examine MJO activity in multiple reanalyses (ERA5, MERRA‐2, and ERA‐20C) and find that MJO wind and precipitation anomaly amplitudes have a complicated time evolution over the record. However, a decrease in the ratio of MJO circulation to precipitation anomaly amplitude is detected over the observational period, consistent with the change in dry static stability. These results suggest that weak‐temperature‐gradient theory may be able to help explain changes in MJO activity in recent decades. |
领域 | 气候变化 |
URL | 查看原文 |
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/301797 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Wei‐,Ting Hsiao,Eric D. Maloney,et al. Investigating Recent Changes in MJO Precipitation and Circulation in Multiple Reanalyses[J]. Geophysical Research Letters,2020. |
APA | Wei‐,Ting Hsiao,Eric D. Maloney,&Elizabeth A. Barnes.(2020).Investigating Recent Changes in MJO Precipitation and Circulation in Multiple Reanalyses.Geophysical Research Letters. |
MLA | Wei‐,et al."Investigating Recent Changes in MJO Precipitation and Circulation in Multiple Reanalyses".Geophysical Research Letters (2020). |
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