Demographics of mesoscale eddies in the California Current

Details Demographics of mesoscale eddies in the California Current Demographics of mesoscale eddies in the California Current

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3414602s&link_type=abstract

Geophysical Research Letters, Volume 34, Issue 14, CiteID L14602

Computer Science

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Oceanography: Physical: Eddies And Mesoscale Processes, Oceanography: Physical: Eastern Boundary Currents, Oceanography: Physical: Enso (4922), Oceanography: Physical: Nearshore Processes

Scientific paper

Demographics and variability of persistent mesoscale eddies in the California Current have been investigated in a systematic manner using a decade (1995-2004) of merged satellite altimeter data. The number of persistent eddies formed each year varied almost 3-fold (4-fold) for cyclones (anticyclones) and was strongly modulated by the 1997-1998 El Niño event. Over the 10-year period, cyclone formation was maximum in both winter and summer while maximum anticyclone formation occurred only in winter. The majority of long-lived eddies (>=70-day lifespan) originated seaward of the 1000 m isobath, and with the exception of 2 anticyclones, did not form between 45° and 50°N. Maximum westward propagation of long-lived eddies was almost 800 km with similar mean propagation speeds for cyclones and anticyclones.

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