The Onset of the Indonesian-Australian Summer Monsoon Triggered by the First-Branch Eastward-Propagating Madden-Julian Oscillation

doi:10.1175/JCLI-D-18-0513.1

	The Onset of the Indonesian-Australian Summer Monsoon Triggered by the First-Branch Eastward-Propagating Madden-Julian Oscillation
	Duan, Yongliang 1,2; Liu, Hongwei 3,4; Yu, Weidong 1,2; Liu, Lin 1,2; Yang, Guang 1,2; Liu, Baochao 1,2
刊名	JOURNAL OF CLIMATE
	2019-09
卷号	32 期号:17 页码:5453-5470
关键词	Atmosphere-ocean interaction Madden-Julian oscillation Monsoons
ISSN号	0894-8755
DOI	10.1175/JCLI-D-18-0513.1
英文摘要	The Madden-Julian oscillation (MJO) often causes the onset of the Indonesian-Australian summer monsoon (IASM) over Indonesia and northern Australia. In the present study, a composite analysis is conducted to reveal the detailed IASM onset process and its air-sea interactions associated with the first-branch eastward-propagating MJO (FEMJO) based on 30-yr ERA-Interim data, satellite-derived sea surface temperature (SST), outgoing longwave radiation (OLR), and SODA3 ocean reanalysis. The results distinctly illustrate the phase-locked relationships among the persistent sea surface warming north of Australia, the FEMJO, and the established westerlies. It is found that the SST to the north of Australia reaches its annual maximum just before the onset of the summer monsoon. The oceanic surface mixed layer heat budget discloses that this rapid warming is primarily produced by the enhanced surface heat flux. In addition, this premonsoon sea surface warming increases the air specific humidity in the low-level troposphere and then establishes zonal moisture asymmetry relative to the FEMJO convection. This creates a more unstable atmospheric stratification southeast of the FEMJO and favors convection throughout the vicinity of northern Australia, which ultimately triggers the onset of the IASM. The results in this study thus may potentially be applicable to seasonal monsoon climate monitoring and prediction.
资助项目	Ao-Shan Talents Cultivation Program - Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS01]
WOS关键词	AIR-SEA INTERACTION ; TROPICAL INTRASEASONAL OSCILLATION ; EASTERN INDIAN-OCEAN ; INTERANNUAL VARIABILITY ; MIXED-LAYER ; MOISTURE ASYMMETRY ; MARITIME CONTINENT ; HEAT-BUDGET ; TEMPERATURE ; MECHANISMS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000477763000003
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24591]
专题	自然资源部第一海洋研究所
通讯作者	Yu, Weidong
作者单位	1.Minist Nat Resources, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Duan, Yongliang,Liu, Hongwei,Yu, Weidong,et al. The Onset of the Indonesian-Australian Summer Monsoon Triggered by the First-Branch Eastward-Propagating Madden-Julian Oscillation[J]. JOURNAL OF CLIMATE,2019,32(17):5453-5470.
APA	Duan, Yongliang,Liu, Hongwei,Yu, Weidong,Liu, Lin,Yang, Guang,&Liu, Baochao.(2019).The Onset of the Indonesian-Australian Summer Monsoon Triggered by the First-Branch Eastward-Propagating Madden-Julian Oscillation.JOURNAL OF CLIMATE,32(17),5453-5470.
MLA	Duan, Yongliang,et al."The Onset of the Indonesian-Australian Summer Monsoon Triggered by the First-Branch Eastward-Propagating Madden-Julian Oscillation".JOURNAL OF CLIMATE 32.17(2019):5453-5470.