DOI: 10.1002/2016GL069876
论文题名: Eddies reduce denitrification and compress habitats in the Arabian Sea
作者: Lachkar Z. ; Smith S. ; Lévy M. ; Pauluis O.
刊名: Geophysical Research Letters
ISSN: 0094-8660
EISSN: 1944-8391
出版年: 2016
卷: 43, 期: 17 起始页码: 9148
结束页码: 9156
语种: 英语
英文关键词: denitrification
; mesoscale eddies
; oxygen minimum zone
Scopus关键词: Biogeochemistry
; Denitrification
; Ecosystems
; Ocean habitats
; Oxygen
; Oxygen supply
; Biogeochemical cycle
; Biological production
; Horizontal resolution
; Marine nitrogen cycle
; Mesoscale eddy
; Northern indian oceans
; Oxygen consumption
; Oxygen minimum zone
; Oceanography
; biogeochemical cycle
; biological production
; deep water ventilation
; denitrification
; euphotic zone
; isopycnal layer
; marine ecosystem
; mesoscale eddy
; nitrate
; organic matter
; oxygen consumption
; oxygen minimum layer
; Arabian Sea
; Atlantic Ocean
; Indian Ocean
; Pacific Ocean
; Pacific Ocean (East)
英文摘要: The combination of high biological production and weak oceanic ventilation in regions, such as the northern Indian Ocean and the eastern Pacific and Atlantic, cause large-scale oxygen minimum zones (OMZs) that profoundly affect marine habitats and alter key biogeochemical cycles. Here we investigate the effects of eddies on the Arabian Sea OMZ—the world's thickest—using a suite of regional model simulations with increasing horizontal resolution. We find that isopycnal eddy transport of oxygen to the OMZ region limits the extent of suboxia so reducing denitrification, increasing the supply of nitrate to the surface, and thereby enhancing biological production. That same enhanced production generates more organic matter in the water column, amplifying oxygen consumption below the euphotic zone, thus increasing the extent of hypoxia. Eddy-driven ventilation likely plays a similar role in other low-oxygen regions and thus may be crucial in shaping marine habitats and modulating the large-scale marine nitrogen cycle. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84985991859&doi=10.1002%2f2016GL069876&partnerID=40&md5=56196f95d2d81e518e52c0c82140c7b2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9623
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Center for Prototype Climate Modeling, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
Recommended Citation:
Lachkar Z.,Smith S.,Lévy M.,et al. Eddies reduce denitrification and compress habitats in the Arabian Sea[J]. Geophysical Research Letters,2016-01-01,43(17).