气候变化领域集成服务门户(CCPortal): Impact of air–sea coupling on Northern Hemisphere summer climate and the monsoon

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DOI	10.1007/s00382-019-04846-6
	Impact of air–sea coupling on Northern Hemisphere summer climate and the monsoon–desert teleconnection
	Ossó A.; Shaffrey L.; Dong B.; Sutton R.
发表日期	2019
ISSN	0930-7575
起始页码	5063
结束页码	5078
卷号	53 期号:2020-07-08
英文摘要	Previous studies have established the existence of a large-scale teleconnection between ascent in the South Asian Summer Monsoon and subsidence over the Mediterranean (known as “the monsoon–desert mechanism”). Improving the representation of this mechanism could potentially improve the skill of seasonal forecasts for European summer weather patterns. In this study, the impact of air–sea coupling on the NH summer climate and the representation of the monsoon–desert mechanism is analysed in two 45-year experiments with the Met-Office Unified Model. In the first coupled experiment, the atmosphere is allowed to freely interact with a high-vertical-resolution mixed-layer ocean model. The diagnosed daily SSTs from this experiment are then used to force an atmosphere-only uncoupled experiment. The two experiments have a similar mean state, but the coupled experiment has a substantially more realistic representation of interannual precipitation variability over the Indian Summer Monsoon region. The coupled experiment can capture the observed westward propagating Rossby-wave trains excited by the Indian Summer Monsoon, while in the uncoupled experiment the Rossby-wave response is more local. It is shown that in the coupled experiment more moisture is transported inland and monsoon precipitation reaches further north, which favours westward Rossby wave propagation. Finally, evidence is shown that the coupled experiment can capture the observed interannual relationship between the Indian Summer Monsoon precipitation and precipitation over the Balkans/Black Sea region. © 2019, The Author(s).
英文关键词	Air–sea interactions; Climate variability; Indian summer monsoon; Summertime tropical–extratropical teleconnections
语种	英语
scopus关键词	air-sea interaction; annual variation; atmosphere-ocean coupling; climate variation; desert; Mediterranean environment; monsoon; Northern Hemisphere; precipitation (climatology); Rossby wave; teleconnection; wave propagation; Balkans; Black Sea
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145937
作者单位	NCAS-Climate, University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Ossó A.,Shaffrey L.,Dong B.,等. Impact of air–sea coupling on Northern Hemisphere summer climate and the monsoon–desert teleconnection[J],2019,53(2020-07-08).
APA	Ossó A.,Shaffrey L.,Dong B.,&Sutton R..(2019).Impact of air–sea coupling on Northern Hemisphere summer climate and the monsoon–desert teleconnection.Climate Dynamics,53(2020-07-08).
MLA	Ossó A.,et al."Impact of air–sea coupling on Northern Hemisphere summer climate and the monsoon–desert teleconnection".Climate Dynamics 53.2020-07-08(2019).