HR: 11:38h
AN: OS22B-06    [Abstracts]
TI: Surface mixed layer temperature and salinity on seasonal and interannual timescales off Baja California
AU: * Gomez-Valdes, J
EM: jgomez@cicese.mx
AF: Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Km 107 Carretera Tijuana-Ensenada, Ensenada, BC 22860, Mexico
AU: Jeronimo, G
EM: gjeronim@cicese.mx
AF: Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Km 107 Carretera Tijuana-Ensenada, Ensenada, BC 22860, Mexico
AU: Wang, D
EM: Dong-Ping.Wang@stonybrook.edu
AF: Marine Sciences Research Center, Stony Brook University, Stony Brook, NY 11794-5000, United States
AU: Garcia, J
EM: joaquin@cicese.mx
AF: Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Km 107 Carretera Tijuana-Ensenada, Ensenada, BC 22860, Mexico
AB: Seasonal and interannual variability of temperature and salinity in the mixed layer of the southern part of the California Current are examined. The data presented were gathered during thirty one cruises from 1997 to 2005 over a grid based on the Investigaciones Mexicanas de la Corriente de California (IMECOCAL) station plan, which is the same that the CalCOFI station plan, from lines 100-130, out to station 80. The sampling interval was 3 month. For each survey, temperature and salinity were integrated from the bottom of the mixed layer to the surface in each station. Empirical Orthogonal Functions analysis identified the seasonal and interannual variability in the data. During spring when both the California Current and the coastal upwelling system intensify, both temperature and salinity reached its seasonal minimum. During fall when the net heat flux maximum occurs and both the California Current and coastal upwelling weakens, temperature reached its seasonal maximum. The maximum of salinity occurred in winter, when the countercurrents are enhanced. The mixed layer temperature was anomalously cold from 1999 to 2003, the contrary happened during January and July 1998, July 2003, and April and July 2004. The mixed layer salinity was anomalously low during January 1998 and from 2003 to 2005, the contrary happened during January 1998 and January 2002. These results are in general in agreement with the ENSO cycles, but it remains to be examined the roll of anomalous advection of cold and fresh water of Subartic origin.
UR: http:www.cicese.mx
DE: 4215 Climate and interannual variability (1616, 1635, 3305, 3309, 4513)
DE: 4516 Eastern boundary currents
DE: 4520 Eddies and mesoscale processes
DE: 4522 ENSO (4922)
DE: 4962 Thermohaline
SC: Ocean Sciences [OS]
MN: 2007 Joint Assembly