Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL081962 |
Possible Role of the Diurnal Cycle in Land Convection in the Barrier Effect on the MJO by the Maritime Continent | |
Ling, Jian1,2; Zhang, Chidong3; Joyce, Robert4; Xie, Ping-ping4; Chen, Guiwan1,2 | |
2019-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:5页码:3001-3011 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Possible effects of the diurnal cycle in land convection on propagation of the Madden-Julian Oscillation over the Indo-Pacific Maritime Continent (MC) were investigated using satellite observations. Four features distinguishable from their respective climatology are uniquely associated with MJO events that cross the MC: strong precipitation over land as their convection centers approach the MC, subsequent increased soil moisture, reduced diurnal amplitude of land convection, and the dominance of precipitation over water by nondiurnal convection as their convection centers move over the MC. These results provide observational evidence for a proposed MAritime Continent Convective diurnal Cycle mechanism in which the diurnal cycle in land convection acts as an intrinsic barrier effect on MJO propagation over the MC. Plain Language Summary By influencing global weather and climate, the Madden-Julian Oscillation (MJO) plays a central role in intraseasonal prediction. But when it propagates over the Indo-Pacific Maritime Continent (MC), the MJO often weakens and sometimes breaks down and ceases to exist. This is known as the barrier effect of the MC. The reason for this barrier effect is not well understood. Through diagnosing satellite data of precipitation and soil moisture, this study provides observational evidence for several steps in a MAritime Continent Convective diurnal Cycle mechanism, in which the diurnal cycle in land convection acts as an intrinsic barrier effect that must be overcome for the MJO to propagate through the MC. The observations show that increased soil moisture reduces the amplitude of diurnal convection over land, allowing convective systems over water of the MC to develop and carry MJO signals through the MC. |
英文关键词 | MJO barrier effect diurnal cycle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462612900074 |
WOS关键词 | MADDEN-JULIAN OSCILLATION ; INTRASEASONAL VARIABILITY ; TRIMODAL CHARACTERISTICS ; EASTWARD PROPAGATION ; SCALE CIRCULATION ; TRMM SATELLITE ; SOIL-MOISTURE ; WATER-VAPOR ; LIFE-CYCLE ; PART I |
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/181664 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, State Key Lab Numer Modeling Atmospher Sci & Geop, Inst Atmospher Phys, Beijing, Peoples R China; 2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing, Peoples R China; 3.NOAA, Pacific Marine Environm Lab, 7600 Sand Point Way Ne, Seattle, WA 98115 USA; 4.NOAA, Natl Ctr Environm Predict, College Pk, MD USA |
推荐引用方式 GB/T 7714 | Ling, Jian,Zhang, Chidong,Joyce, Robert,et al. Possible Role of the Diurnal Cycle in Land Convection in the Barrier Effect on the MJO by the Maritime Continent[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(5):3001-3011. |
APA | Ling, Jian,Zhang, Chidong,Joyce, Robert,Xie, Ping-ping,&Chen, Guiwan.(2019).Possible Role of the Diurnal Cycle in Land Convection in the Barrier Effect on the MJO by the Maritime Continent.GEOPHYSICAL RESEARCH LETTERS,46(5),3001-3011. |
MLA | Ling, Jian,et al."Possible Role of the Diurnal Cycle in Land Convection in the Barrier Effect on the MJO by the Maritime Continent".GEOPHYSICAL RESEARCH LETTERS 46.5(2019):3001-3011. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论