DOI: 10.1002/2015GL065147
论文题名: Sensitivity of the California Current nutrient supply to wind, heat, and remote ocean forcing
作者: Jacox M.G. ; Bograd S.J. ; Hazen E.L. ; Fiechter J.
刊名: Geophysical Research Letters
ISSN: 0094-9293
EISSN: 1944-9024
出版年: 2015
卷: 42, 期: 14 起始页码: 5950
结束页码: 5957
语种: 英语
英文关键词: California Current System
; climate variability
; heat flux
; nitrate
; upwelling
; wind
Scopus关键词: Atmospheric pressure
; Atmospheric temperature
; Climate models
; Climatology
; Ecology
; Ecosystems
; Nitrates
; Wind
; California current systems
; Climate variability
; Interannual fluctuations
; Pacific decadal oscillation
; Regional ocean modeling
; Southern oscillation
; Upwelling
; Wind intensification
; Heat flux
; annual variation
; climate change
; concentration (composition)
; El Nino
; heat flux
; nutrient availability
; phytoplankton
; timescale
; upwelling
; wind
; wind forcing
; California
; United States
英文摘要: A regional ocean model is used to evaluate the roles of wind, surface heat flux, and basin-scale climate variability in regulating the upwelled nitrate supply in the California Current. A strong positive trend in nitrate flux from 1980 to 2010 was driven almost entirely by enhanced equatorward winds, negating a weak negative trend associated with increased surface heat flux. Increased upwelling and nitrate flux are consistent with cooler surface temperatures and higher phytoplankton concentrations observed over the same period. Changes in remote ocean forcing, resulting primarily from basin-scale climate variability (e.g., El Niño-Southern Oscillation and Pacific Decadal Oscillation), drive considerable interannual fluctuations and may dominate the ecosystem response on interannual to decadal time scales. However, comparison with previously published findings suggests that local wind intensification persists through changing basin-scale climate regimes. Understanding the different time scales of variability in forcing mechanisms, and their interactions with each other, is necessary to distinguish transient ecosystem impacts from secular trends. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938981322&doi=10.1002%2f2015GL065147&partnerID=40&md5=453df4c1815f5274d04eba2955c68cf7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8909
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: Institute of Marine Sciences, University of California, Santa Cruz, CA, United States
Recommended Citation:
Jacox M.G.,Bograd S.J.,Hazen E.L.,et al. Sensitivity of the California Current nutrient supply to wind, heat, and remote ocean forcing[J]. Geophysical Research Letters,2015-01-01,42(14).