Impacts of the 2015-2016 El Nino on the California Current System: Early assessment and comparison to past events

Jacox, Michael G.; Hazen, Elliott L.; Zaba, Katherine D.; Rudnick, Daniel L.; Edwards, Christopher A.; Moore, Andrew M.; Bograd, Steven J.

doi:10.1002/2016gl069716

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Impacts of the 2015-2016 El Nino on the California Current System: Early assessment and comparison to past events

2016
By Jacox, Michael G. ; Hazen, Elliott L. ; Zaba, Katherine D. ; ...
Source: Geophysical Research Letters, 43(13), 7072-7080.

[PDF-1.42 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Jacox, Michael G. ; Hazen, Elliott L. ; Zaba, Katherine D. ; Rudnick, Daniel L. ; Edwards, Christopher A. ; ... More +

Jacox, Michael G. ; Hazen, Elliott L. ; Zaba, Katherine D. ; Rudnick, Daniel L. ; Edwards, Christopher A. ; Moore, Andrew M. ; Bograd, Steven J. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) Less -
Description:

The 2015-2016 El Nino is by some measures one of the strongest on record, comparable to the 1982-1983 and 1997-1998 events that triggered widespread ecosystem change in the northeast Pacific. Here we describe impacts of the 2015-2016 El Nino on the California Current System (CCS) and place them in historical context using a regional ocean model and underwater glider observations. Impacts on the physical state of the CCS are weaker than expected based on tropical sea surface temperature anomalies; temperature and density fields reflect persistence of multiyear anomalies more than El Nino. While we anticipate El Nino-related impacts on spring/summer 2016 productivity to be similarly weak, their combination with preexisting anomalous conditions likely means continued low phytoplankton biomass. This study highlights the need for regional metrics of El Nino's effects and demonstrates the potential to assess these effects before the upwelling season, when altered ecosystem functioning is most apparent.
Source:

Geophysical Research Letters, 43(13), 7072-7080.
DOI:

https://doi.org/10.1002/2016gl069716
Document Type:

Journal Article
Funding:

Grant no. NA10OAR4320156 ; Grant no. NA11NOS0120029

Grant no. NA10OAR4320156 ; Grant no. NA11NOS0120029 Less -
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urn:sha256:29e59c4e6e97bc1ec098d34f85a49d4fd8b0bc987436ee4b8f4fce0e126771ba
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https://repository.library.noaa.gov/view/noaa/21034/noaa_21034_DS1.pdf
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Impacts of the 2015-2016 El Nino on the California Current System: Early assessment and comparison to past events

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