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DOI | 10.1002/2016GL072430 |
Winter mean lower tropospheric moisture over the Maritime Continent as a climate model diagnostic metric for the propagation of the Madden-Julian oscillation | |
Gonzalez, Alex O.1,2; Jiang, Xianan1,2 | |
2017-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Despite its widespread influences on the atmosphere, the Madden-Julian oscillation (MJO) remains poorly represented in state-of-the-art general circulation models (GCMs). Motivated by recent findings that the horizontal advection of the mean low-tropospheric moist static energy or moisture by the MJO winds plays a crucial role in the eastward propagation of the MJO, we investigate the relationship between lower tropospheric moisture patterns over the Indo-Pacific and MJO eastward propagation in a suite of 23 GCM simulations. Model capability of reproducing the observed November-April mean lower tropospheric moisture pattern over the Indo-Pacific, especially near the Maritime Continent (MC), is highly correlated with model skill in simulating MJO eastward propagation. In GCMs with difficulty capturing realistic MJO propagation, the amplitude of the mean low-level moisture over the MC is greatly underestimated, leading to weak horizontal moisture gradients and thus discrepancies in moisture advection, significantly affecting MJO propagation. This study suggests that the mean lower tropospheric moisture pattern over the MC can serve as an important diagnostic metric for MJO propagation in climate models. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398183700061 |
WOS关键词 | STATIC ENERGY BUDGET ; TROPICAL INTRASEASONAL OSCILLATION ; EASTWARD PROPAGATION ; VERTICAL STRUCTURE ; MJO ; PRECIPITATION ; DISTURBANCES ; CONVECTION ; PACIFIC |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26003 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90024 USA; 2.CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Gonzalez, Alex O.,Jiang, Xianan. Winter mean lower tropospheric moisture over the Maritime Continent as a climate model diagnostic metric for the propagation of the Madden-Julian oscillation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(5). |
APA | Gonzalez, Alex O.,&Jiang, Xianan.(2017).Winter mean lower tropospheric moisture over the Maritime Continent as a climate model diagnostic metric for the propagation of the Madden-Julian oscillation.GEOPHYSICAL RESEARCH LETTERS,44(5). |
MLA | Gonzalez, Alex O.,et al."Winter mean lower tropospheric moisture over the Maritime Continent as a climate model diagnostic metric for the propagation of the Madden-Julian oscillation".GEOPHYSICAL RESEARCH LETTERS 44.5(2017). |
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