The California Current

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Presentation transcript:

The California Current Golden State, Green Ocean Lauren Weisel Physical Oceanography 2012

Overview Location Eastern Boundary Currents Physical Characteristics Upwelling CANON Experiment CalCOFI Global Warming

Location Image source: http://seasonsinthesea.com/photos/physical/cal-current-winter-spring-400.jpg

Eastern Boundary Currents Relatively shallow, broad, and slow-flowing Equatorward flow Upwelling Image source: *

Physical Characteristics 4 different water masses Each with different properties

Upwelling Ekman transport- driven Cold water drawn upwards Nutrient-rich Image source: http://www.scielo.cl/fbpe/img/rchnat/v77n3/img01-06.jpg

Image source: http://im.glogster.com/media/3/10/5/10/10051035.png

CANON Experiment MBARI “Going with the flow” Picoplankton Nitrate vs. ammonia Image source: http://www.mbari.org/news/news_releases/2010/canon/canon_sept.html

CalCOFI Founded in response to sardine fishing crisis Major researchers in eastern Pacific

Global Warming Temperatures along California coast on the rise Zooplankton on the decline Anthropogenic?

References Fulton-Bennett, Kim (2010) The CANON experiments – Tracking algal blooms by “going with the flow” Monterey Bay Aquarium Research Institute. <http://www.mbari.org/news/news_releases/2010/canon/canon_sept.html> Accessed 4 Dec 2012. Lynn, Ronald J., James J. Simpson (1987) The California Current system: the seasonal variability of its physical characteristics. Journal of Geophysical Research, 92, 12,947-12,966 Ohman, Mark D., Elizabeth L. Venrick (2003) CalCOFI in a changing ocean. Scripps Institute of Oceanography. Roemmich, Dean, John McGowan (1995) Climatic warming and the decline of zooplankton in the California Current. Science, 267, 1324-1326. * http://www.eng.warwick.ac.uk/staff/gpk/Teaching-undergrad/es427/rice.glacier.edu- oceans/GLACIER%20Oceans-%20--%20Windcirculation_files/4_easternboundcurr.gif