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Bograd et al. 2001
Bograd, S.J., Chereskin, T.K. and Roemmich, D. (2001). Transport of mass, heat, salt, and nutrients in the southern California Current System: Annual cycle and interannual variability. Journal of Geophysical Research 106: doi: 10.1029/1999JC000165. issn: 0148-0227.

Net fluxes of mass, heat, salt, nutrients, oxygen, and chlorophyll into a control volume within the southern California Current System (CCS) were computed from data collected on 55 cruises over a 14 year period (1984--1997). This analysis builds on an earlier work <Roemmich, 1989> by using an additional 39 cruises over 10 years, allowing for reliable estimates of the temporal variability in the fluxes on seasonal and interannual timescales and a reduction in the corresponding error budgets. A close balance was found between geostrophic convergence and Ekman divergence for the 14 year, seasonal, and interannual cruise subsets using three different wind products. Wind data taken concomitantly with the hydrographic sampling provided the best balance and hence the best flux estimates. The southern CCS was found to be a region with higher evaporation over precipitation and net heat gain by the ocean from the atmosphere (86 W m-2 in the 14 year mean) in all seasons. Significant variability in both the Ekman and geostrophic transports and the net property fluxes was found to be related to low-frequency (interpentadal and El Ni¿o-Southern Oscillation timescale) changes in the dominant wind and circulation patterns in the CCS. Variability in primary productivity, estimated from the derived nutrient fluxes, accompanied the environmental changes. Application of this model to the ongoing data collection will further reduce the error bars on the fluxes and will allow for continued monitoring of changes in the physical and biological structure of the southern CCS. ¿ 2001 American Geophysical Union

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Abstract

Keywords
Oceanography, General, Climate and interannual variability, Oceanography, General, Descriptive and regional oceanography, Oceanography, Physical, Eastern boundary currents, Oceanography, Physical, Upper ocean processes
Journal
Journal of Geophysical Research
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Publisher
American Geophysical Union
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