Characterization of the sea surface temperature and climatology of the Bay of La Paz, B.C.S., Mexico.
DOI:
https://doi.org/10.37543/oceanides.v21i1-2.27Keywords:
Sea surface temperature, principal components, climatology, Bay of La PazAbstract
4175 daily NOAA/AVHRR sea surface temperature (SST) images from July of 1997 to December of 2004 were analyzed, in order to characterize the climatology and interannual variation of SST in the Bay of La Paz. From this information, 88 months of SST anomalies were estimated and principal components (PC) analysis was performed. Three components were obtained that explain as a whole the 50.32% of the total variance of the original data of anomalies (32.68%, 11.95% and 5.69% respectively). PC1 displays the higher values of correlation to the northwest of the bay, with a gradient decreasing towards the southeast. This component has a high spatial correlation with the bathymetry of the bay, and temporal to the warm months. The highest values of PC2 are located in center of the bay, decreasing towards the northwest and southeast. This spatial pattern is located in the zone where a large cyclonic eddy has been detected. For this reason we attributed this component the influence of such circulation effect. PC3 higher correlation lies throughout the west coast of the bay, a zone strongly influenced by the longshore current. The SST fluctuations in the zone and the period of study did not display a significant correlation with respect to the Southern Oscillation Index or El Niño Southern Oscillation, probably because the Bay of La Paz is an area with bathymetric and oceanographic characteristics that determine a peculiar response to
environmental changes.
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Copyright (c) 2006 G. Martínez-Flores, R. Cervantes Duarte, E. González-Rodríguez
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