Influence of the El Niño-La Niña cycle on satellite-derived primary production in the California Current

Details Influence of the El Niño-La Niña cycle on satellite-derived primary production in the California Current Influence of the El Niño-La Niña cycle on satellite-derived primary production in the California Current

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29q..27k&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 17, pp. 27-1, CiteID 1846, DOI 10.1029/2002GL014963

Mathematics

Logic

8

Oceanography: General: Climate And Interannual Variability (3309), Oceanography: General: Diurnal, Seasonal, And Annual Cycles, Oceanography: Physical: El Nino, Oceanography: Physical: Eastern Boundary Currents, Oceanography: Biological And Chemical: Plankton

Scientific paper

Time series of phytoplankton net primary production (NPP) for the California Current were derived using satellite data and the VGPM primary productivity model for a 5-year period (1997-2001) including the 1997-98 El Niño. NPP had a strong annual periodicity correlated with the El Niño-La Niña cycle. The most obvious effects of the El Niño on NPP were 100-300 km off the coast: a reduction by 30% off Southern California but an increase by 40% off Baja California. During its peak El Niño decreased NPP by 10-15% (1.5 Tg C month-1) in the 1000-km band off Southern California but increased by 20-30% off Northern and Southern Baja (4 Tg C month-1). The total annual NPP was lowest during the El Niño years of 1997-1998 and peaked in 2000. Trends of increasing NPP and zooplankton volume were observed off Central and Southern California.

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