Alongshore variability of the California Current System from Central to Baja California in winter and spring 2003, physical, chemical and biological properties
| Autor: | Pennington, J. T., Michisaki, Reiko, Kuwahara, V., Almeda, C., Burczynski, M., Castro, Carmen G., Chase, C. A., Elrod, V., Fitzwater, S., Johnson, K. M., Lance, V., Marin, R., Marinovic, B., Martínez, M. D., Newton, K., Plant, J., Rago, T., Rienecker, E., Valdez, J. E., Valle, S. R., Chávez, Francisco P. |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Popis: | Poster.-- American Society of Limnology and Oceanography and the Oceanography Society, Honolulu, Hawaii (USA), 15-20 febrero 2004 Sixteen stations along the continental slope of western North America were occupied in February 18-27 and May 22-31, 2003, and form a meridional section from Monterey Bay, California (37º N, 122º W) to Cabo San Lucas, Mexico (23º N, 110º W). Our purpose was to compare trends in California Current (CC), Inshore Countercurrent (ICC) and California Undercurrent (CUC) properties with latitude, and between winter and spring conditions. In winter, coastal upwelling was near zero and the along-transect dynamic height was high and flat, allowing the ICC to advect tropical properties northward. In spring, coastal upwelling had commenced and surface flow along the transect presumably became equatorward. As a consequence of these dynamics, in winter the thermocline was deeper, SST was higher, macronutrients, chlorophyll and primary production were low along the entire transect, with most properties lacking strong latitudinal trends. In spring, the thermocline, macronutrients, chlorophyll and primary production rose along the entire section but most dramatically in the north where upwelling was stronger. Prochlorophytes and other small open-ocean phytoplankton were more abundant in winter along the entire transect and to the south in spring, whereas diatoms, a characteristic coastal group of phytoplankton, were more abundant in spring and in the north. Surface iron was higher in the north in winter, but lower there in spring, presumably reflecting drawdown by diatoms. These results are detailed in the figure captions We would like to express our gratitude to the David and Lucile Packard Foundation for funding this work |
| Databáze: | OpenAIRE |
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