气候变化领域集成服务门户(CCPortal): Monitoring Intraseasonal Oscillations in the Indian Ocean Using Satellite Observations

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DOI	10.1029/2019JC015891
	Monitoring Intraseasonal Oscillations in the Indian Ocean Using Satellite Observations
	Roman-Stork H.L.; Subrahmanyam B.; Trott C.B.
发表日期	2020
ISSN	21699275
卷号	125 期号:2
英文摘要	Intraseasonal oscillations (ISOs) in the Indian Ocean play a significant role in determining the active (wet) and break (dry) cycles of the southwest monsoon rainfall. In this study, we use satellite-derived precipitation, sea level anomalies (SLAs), sea surface salinity (SSS), sea surface temperature, and surface winds to monitor the 30-90-day, 10-20-day, and 3-7-day ISOs, and how they influence local dynamics. The main focus of this work, however, is showing the importance of using SLA and SSS to monitor ISOs. Mixed Rossby gravity waves were found to induce convection associated with the southern cell of the 10-20-day mode, with surface winds from the northern cell modulating coastal Kelvin waves in the Bay of Bengal. The 10-20-day SSS response is instead more closely related to wind-induced upwelling in the central Bay of Bengal and river runoff in the northern Bay. The 3-7-day mode was found to have a weak oceanic signal, as the monsoon trough is mainly positioned over land, though SSS captured the structure of the signal most clearly. This study highlights the need for high spatial resolution SLA in order to adequately capture 3-7-day oscillations in the monsoon trough. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Indian Ocean; intraseasonal oscillations; MJO; salinity; sea level anomalies; SMAP
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186997
作者单位	School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, United States; School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center, MS, United States
推荐引用方式 GB/T 7714	Roman-Stork H.L.,Subrahmanyam B.,Trott C.B.. Monitoring Intraseasonal Oscillations in the Indian Ocean Using Satellite Observations[J],2020,125(2).
APA	Roman-Stork H.L.,Subrahmanyam B.,&Trott C.B..(2020).Monitoring Intraseasonal Oscillations in the Indian Ocean Using Satellite Observations.Journal of Geophysical Research: Oceans,125(2).
MLA	Roman-Stork H.L.,et al."Monitoring Intraseasonal Oscillations in the Indian Ocean Using Satellite Observations".Journal of Geophysical Research: Oceans 125.2(2020).