DOI: 10.1002/2015GB005096
Scopus记录号: 2-s2.0-84955212758
论文题名: Mechanisms and predictability of multiyear ecosystem variability in the North Pacific
作者: Chikamoto M ; O ; , Timmermann A ; , Chikamoto Y ; , Tokinaga H ; , Harada N
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期: 11 起始页码: 2001
结束页码: 2019
语种: 英语
英文关键词: climate variability
; decadal predictability
; Earth system model
; marine ecosystem variability
; North Pacific
; nutrient cycling
Scopus关键词: biogeochemical cycle
; biological production
; buoyancy
; climate variation
; decadal variation
; ecosystem response
; ecosystem structure
; heat flux
; marine ecosystem
; nutrient cycling
; oceanic circulation
; phytomass
; phytoplankton
; prediction
; vorticity
; zooplankton
; Aleutian Margin
; Pacific Ocean
; Pacific Ocean (North)
英文摘要: Aleutian Low variations provide vorticity, buoyancy, and heat-flux forcing to the North Pacific Ocean, which in turn cause changes in ocean circulation, mixed layer characteristics and sea ice coverage. In this process the white noise atmospheric characteristics are integrated dynamically and thermodynamically to generate red noise ocean spectra. Using the Community Earth System Model (version 1.0.3) we study the resulting biogeochemical and ecosystem responses in the North Pacific. We find that ocean dynamical variables have an impact on the tendencies of key nutrients and biological production, which leads to a further reddening of biogeochemical spectra resulting in potential predictability on time scales of 2-4 years. However, this low-pass filtering does not apply to all biogeochemical variables and is regionally dependent. It is shown that phytoplankton biomass in the Central North Pacific adjusts to the much shorter-term variability associated with changes in mixed layer depth, light availability, and zooplankton grazing, thus limiting the predictability of phytoplankton anomalies to about 1 year. In the eastern North Pacific the slow advection of anomalous nutrient concentrations leads to longer persistence of phytoplankton variability and increased potential predictability of up to 3 years. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77909
Appears in Collections: 气候变化事实与影响
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作者单位: International Pacific Research Center, University of Hawaii, Honolulu, HI, United States; Disaster Prevention Research Institute, Kyoto University, Uji, Japan; Hakubi Center for Advanced Research, Kyoto University, Uji, Japan; Research and Development Center for Global Change, JAMSTEC, Yokosuka, Japan
Recommended Citation:
Chikamoto M,O,, Timmermann A,et al. Mechanisms and predictability of multiyear ecosystem variability in the North Pacific[J]. Global Biogeochemical Cycles,2015-01-01,29(11)