气候变化领域集成服务门户(CCPortal): The effect of mountain uplift on eastern boundary currents and upwelling systems

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DOI	10.5194/cp-16-161-2020
	The effect of mountain uplift on eastern boundary currents and upwelling systems
	Jung G.; Prange M.
发表日期	2020
ISSN	18149324
起始页码	161
结束页码	181
卷号	16 期号:1
英文摘要	All major mountain ranges are assumed to have been subject to increased uplifting processes during the late Miocene and Pliocene. Previous work has demonstrated that African uplift is an important element to explain Benguela upper-ocean cooling in the late Miocene-Pliocene. According to proxy records, a surface ocean cooling also occurred in other eastern boundary upwelling regions during the late Neogene. Here we investigate a set of sensitivity experiments altering topography in major mountain regions (Andes, North American Cordillera, and southern and East African mountains) separately with regard to the potential impact on the intensity of near-coastal low-level winds, Ekman transport and Ekman pumping, and upper-ocean cooling. The simulations show that mountain uplift is important for upper-ocean temperature evolution in the area of eastern boundary currents. The impact is primarily on the atmospheric circulation which is then acting on upper-ocean temperatures through changes in strengths of upwelling, horizontal heat advection and surface heat fluxes. Different atmosphere-ocean feedbacks additionally alter the sea surface temperature response to uplift. The relative importance of the different feedback mechanisms depends on the region, but it is most likely also influenced by model and model resolution. © Author(s) 2020.
语种	英语
scopus关键词	advection; atmospheric circulation; boundary current; climate feedback; cooling; Ekman transport; heat flux; heat transfer; Miocene; Pliocene; sea surface temperature; uplift; upper ocean; Andes; Atlantic Ocean; Benguela Basin; North American Cordillera
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146752
作者单位	MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, 28334, Germany; Faculty of Geosciences, University of Bremen, Bremen, 28334, Germany
推荐引用方式 GB/T 7714	Jung G.,Prange M.. The effect of mountain uplift on eastern boundary currents and upwelling systems[J],2020,16(1).
APA	Jung G.,&Prange M..(2020).The effect of mountain uplift on eastern boundary currents and upwelling systems.Climate of the Past,16(1).
MLA	Jung G.,et al."The effect of mountain uplift on eastern boundary currents and upwelling systems".Climate of the Past 16.1(2020).