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State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina

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dc.creator Bjorkstedt, Eric P.
dc.creator Goericke, Ralf
dc.creator McClatchie, Sam
dc.creator Weber, Ed
dc.creator Watson, William
dc.creator Lo, Nancy
dc.creator Peterson, Bill
dc.creator Emmett, Bob
dc.creator Brodeur, Ric
dc.creator Peterson, Jay
dc.creator Litz, Marisa
dc.creator Gomez-Valdez, Jose
dc.creator Gaxiola-Castro, Gilberto
dc.creator Lavaniegos, Bertha
dc.creator Chavez, Francisco
dc.creator Collins, Curtis A.
dc.creator Field, John
dc.creator Sakuma, Keith
dc.creator Warzybok, Pete
dc.creator Bradley, Russell
dc.creator Jahncke, Jaime
dc.creator Bograd, Steven
dc.creator Schwing, Franklin
dc.creator Campbell, Gregory S.
dc.creator Hildebrand, John
dc.creator Sydeman, William
dc.creator Thompson, Sarah Ann
dc.creator Largier, John L.
dc.creator Halle, Chris
dc.creator Kim, Sung Yong
dc.creator Abell, Jeff
dc.date.accessioned 2012-10-31T18:32:23Z
dc.date.available 2012-10-31T18:32:23Z
dc.date.issued 2011-12
dc.identifier.citation Bjorkstedt, E. P., Goericke, R., McClatchie, S., Weber, E., Watson, W., Lo, N., & Peterson, B. (2011, December). State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina. California Cooperative Oceanic Fisheries Investigations Reports, 52, 36-68. en_US
dc.identifier.uri http://hdl.handle.net/1957/34714
dc.description This is the publisher’s final pdf. The published article is copyrighted by Scripps Insitutute of Oceanography and can be found at: http://libraries.ucsd.edu/locations/sio/services/sio-publications.html. en_US
dc.description.abstract The state of the California Current system (CCS) since spring 2010 has evolved in response to the development of cooler La Nina following the dissipation of the relatively weak and short-lived El Nino event of 2009-2010. The 2009-2010 El Nino appears to have dissipated quite rapidly in early spring 2010, yet the transition to anomalously cool conditions followed somewhat later with the onset of anomalously strong upwelling throughout the CCS in summer 2010 and the development of unusually-in some cases record-cool conditions throughout the CCS. However, following the fairly consistent emergence of cooler La Nina conditions across the CCS going into summer 2010, regional contrasts were apparent. Off southern California, the effects of both the 2009-2010 El Nino and subsequent return to La Nina conditions appear to have had modest effects on the system, and the patterns that attract interest appear to be unfolding over longer time scales (e.g., freshening of upper water column and trends in nitrate and oxygen concentrations). In contrast, the northern California Current has exhibited much more dramatic short-term changes over the past two years, due in part to greater variability in environmental forcing affecting this region. Ecosystem responses also varied across the CCS. The pelagic ecosystem off central and southern California showed evidence of enhanced productivity, in terms of rockfish recruitment, seabird abundance and reproductive success, etc., and the planktonic assemblage off Baja California indicated a resurgence of crustacean zooplankton following a period dominated by gelatinous zooplankton. Off northern California and Oregon, however, the return to La Nina conditions did not entirely reverse changes in the copepod assemblage arising during the 2009-2010 El Nino, which-may have contributed to low at-sea survival of juvenile salmon. At the time of writing, tropical conditions are ENSO-neutral and forecast to remain so into fall 2011 and possibly into early 2012, yet the PDO remained strongly negative into summer 2011. It is uncertain whether the return to cool conditions observed in the past year will continue to govern the state of the California Current. en_US
dc.description.sponsorship IMECOCAL surveys were supported by CICESE, SEMARNAT-CONACYT 23804 and 107267, and SEP-CONACYT projects (129611, 82529). Seabird surveys in recent years were supported by grants from the California Ocean Protection Council, California Sea Grant, NOAA, NSF, and NASA. Sonoma County Water Agency funds observations along the Bodega Line. en_US
dc.language.iso en_US en_US
dc.publisher Scripps Institution of Oceanography en_US
dc.relation.ispartofseries California Cooperative Oceanic Fisheries Investigations Reports en_US
dc.relation.ispartofseries Vol. 52 en_US
dc.subject Climate en_US
dc.subject Ocean en_US
dc.subject Seabird en_US
dc.subject Ecosystem en_US
dc.subject System en_US
dc.subject Regime en_US
dc.subject Growth en_US
dc.title State of the California Current 2010-2011: Regionally Variable Responses to a Strong (But Fleeting?) La Nina en_US
dc.type Article en_US
dc.description.peerreview yes en_US

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