globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0166962
Title:
Macro-Scale Patterns in Upwelling/Downwelling Activity at North American West Coast
Author: Romeo Saldívar-Lucio; Emanuele Di Lorenzo; Miguel Nakamura; Héctor Villalobos; Daniel Lluch-Cota; Pablo Del Monte-Luna
Source Publication: PLOS ONE
ISSN: 1932-6203
Publishing Year: 2016
Date Published: 2016-11-28
Volume: 11, Issue:11
Language: 英语
Keyword: El Niño-Southern Oscillation ; Oceans ; Latitude ; Sea water ; Seasons ; Forecasting ; North America ; Oceanography
English Abstract: The seasonal and interannual variability of vertical transport (upwelling/downwelling) has been relatively well studied, mainly for the California Current System, including low-frequency changes and latitudinal heterogeneity. The aim of this work was to identify potentially predictable patterns in upwelling/downwelling activity along the North American west coast and discuss their plausible mechanisms. To this purpose we applied the min/max Autocorrelation Factor technique and time series analysis. We found that spatial co-variation of seawater vertical movements present three dominant low-frequency signals in the range of 33, 19 and 11 years, resembling periodicities of: atmospheric circulation, nodal moon tides and solar activity. Those periodicities might be related to the variability of vertical transport through their influence on dominant wind patterns, the position/intensity of pressure centers and the strength of atmospheric circulation cells (wind stress). The low-frequency signals identified in upwelling/downwelling are coherent with temporal patterns previously reported at the study region: sea surface temperature along the Pacific coast of North America, catch fluctuations of anchovy Engraulis mordax and sardine Sardinops sagax, the Pacific Decadal Oscillation, changes in abundance and distribution of salmon populations, and variations in the position and intensity of the Aleutian low. Since the vertical transport is an oceanographic process with strong biological relevance, the recognition of their spatio-temporal patterns might allow for some reasonable forecasting capacity, potentially useful for marine resources management of the region.
Related Link: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0166962&type=printable
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/22723
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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Affiliation: Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas (CICIMAR), La Paz, Baja California Sur, México;Centro de Investigaciones Biológicas del Noroeste, La Paz, Baja California Sur, México;School of Earth & Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, United States of America;Área de Probabilidad y Estadística, Centro de Investigación en Matemáticas AC, Guanajuato, México;Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas (CICIMAR), La Paz, Baja California Sur, México;Centro de Investigaciones Biológicas del Noroeste, La Paz, Baja California Sur, México;Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas (CICIMAR), La Paz, Baja California Sur, México

Recommended Citation:
Romeo Saldívar-Lucio,Emanuele Di Lorenzo,Miguel Nakamura,et al. Macro-Scale Patterns in Upwelling/Downwelling Activity at North American West Coast[J]. PLOS ONE,2016-01-01,11(11)
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