DOI: 10.1002/2016GL070288
论文题名: Forcings of nutrient, oxygen, and primary production interannual variability in the southeast Atlantic Ocean
作者: Bachèlery M.-L. ; Illig S. ; Dadou I.
刊名: Geophysical Research Letters
ISSN: 0094-8720
EISSN: 1944-8451
出版年: 2016
卷: 43, 期: 16 起始页码: 8617
结束页码: 8625
语种: 英语
英文关键词: Benguela Upwelling System
; biogeochemical cycles
; interannual variability
; primary production
; remote equatorial forcing
Scopus关键词: Biodiversity
; Buses
; Fisheries
; Benguela upwelling systems
; Biogeochemical cycle
; Equatorial forcing
; Interannual variability
; Primary production
; Biogeochemistry
英文摘要: The recurrent occurrences of interannual warm and cold events along the coast of Africa have been intensively studied because of their striking effects on climate and fisheries. Using sensitivity experimentation based on a coupled physical/biogeochemical model, we show that the oceanic remote equatorial forcing explains more than 85% of coastal interannual nitrate and oxygen fluctuations along the Angolan and Namibian coasts up to the Benguela Upwelling System (BUS). These events, associated with poleward propagations of upwelling and downwelling Coastal Trapped Waves (CTW), are maximum in subsurface and controlled by physical advection processes. Surprisingly, an abrupt change in the CTW biogeochemical signature is observed in the BUS, associated with mixed vertical gradients due to the strong local upwelling dynamics. Coastal modifications of biogeochemical features result in significant primary production variations that may affect fisheries habitats and coastal biodiversity along the southwestern African coasts and in the BUS. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983445891&doi=10.1002%2f2016GL070288&partnerID=40&md5=c83f359b966685b1c7f712351db1a542
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9683
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: Laboratoire d'Etudes en Géophysique et Océanographie Spatiales (LEGOS), University of Toulouse, CNRS, CNES, UPS, IRD, Toulouse, France
Recommended Citation:
Bachèlery M.-L.,Illig S.,Dadou I.. Forcings of nutrient, oxygen, and primary production interannual variability in the southeast Atlantic Ocean[J]. Geophysical Research Letters,2016-01-01,43(16).