Water exchange between the Gulf of California and the Pacific Ocean: results from a one-year global HYCOM simulation
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Abstract
The mean and seasonal water exchange between the gulf of California and the Pacific Ocean (PO) are analyzed with a one-year global HYCOM simulation. At the mouth of the gulf there are six alternating layers of inflow and outflow of mean transport with inflow in the uppermost layer (0-68 m) and the largest outflow in the second layer (68-198 m). The three uppermost layers have the largest mean transports, and they can be identified more than two thirds along the length of the gulf with approximately the same thickness. The difference in the transport between the interior of the gulf and the transport at the mouth in the upper layer, shows that there must be an upward mean transport (upwelling) into the upper layer along almost the entire length of the gulf. The two deepest layers have smaller mean transports, but the deepest layer has an outflow that is about half of the inflow of the surface layer implying a very large vertical transport into that layer. We obtained the seasonal exchange by fitting annual and semiannual harmonics to the monthly mean transports in each layer. The maxima and minima of the seasonal exchange are larger than the mean and they occur in summer and autumn showing that most of the exchange with the PO occurs during those two seasons. The maximum inflow (~ 0.8 Sv, 1 Sv = 1 × 106 m3/s) in the upper layer occurs at the beginning of July and the maximum outflow at the beginning of November (~ 0.4 Sv). The transport in the second layer is out of the gulf all year round. The fourth layer (380-822 m) has the smallest mean transport of all layers but, together with the first layer, has the largest seasonal transport. The net outflowing transport is about 0.2972 Sv, which gives a turnover time of approximately 14 years for the gulf.
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References
Acosta-Solís, G. (2023). El Golfo de California visto a través del modelo numérico Global HYCOM. [Tesis de Maestría]. Repositorio CICESE. https://cicese.repositorioinstitucional.mx/jspui/handle/1007/3830
Badan-Dangon, A., & C. J. Koblinsky, and T. Baumgartner (1985). Spring and summer in the Gulf of California: Observations of surface thermal patterns. Oceanol. Acta, 8, 1.
Baumgartner, T. R., & N. Christiensen (1985). Coupling of the Gulf of California to large-scale interannual climatic variability. Journal of Marine Research, 43(4), 825-848.
Beron-Vera, F. P., & Pedro Ripa (2000). Three-dimensional aspects of the seasonal heat balance in the Gulf of California. Journal of Geophysical Research, 105(C5), 11441-11457. doi: https://doi.org/10.1029/2000JC900038
Bordoni, S., P. E. Ciesielski, R. H. Johnson, B. D. McNoldy, & B. Stevens (2004). The low-level circulation of the North American Monsoon as revealed by QuikSCAT. Geophysical Research Letters, 31(10), L10109. doi: https://doi.org/10.1029/2004GL020009
Bray, N. A. (1988). Thermohaline Circulation in the Gulf of California. Journal of Geophysical Research. Oceans, 93(C5), 4993-5020. doi: https://doi.org/10.1029/JC093iC05p04993
Buijsman, M. C., B. K. Arbic, J. G. Richman, J. F. Shriver, A. J. Wallcraft, & L. Zamudio (2017). Semidiurnal internal tide incoherence in the equatorial Pacific, Journal of Geophysical Research. Oceans, 122(7), 5286–5305. doi: https://doi.org/10.1002/2016JC012590
Castro, R., C. A. Collins, T. A. Rago, T. Margolina, & L. F. Navarro-Olache (2017). Currents, transport, and thermohaline variability at the entrance to the Gulf of California (19–21 April 2013). Ciencias Marinas, 43(3). doi: https://doi.org/10.7773/cm.v43i3.2771
Castro, R., M. Lavín, & P. Ripa (1994). Seasonal heat balance in the Gulf of California. Journal of Geophysical Research. Oceans, 99(C2), 3249–3261. doi: https://doi.org/10.1029/93JC02861
Castro, R., Reginaldo Durazo, Affonso Mascarenhas, Curtis A. Collins, & A. Trasviña (2006). Thermohaline variability and geostrophic circulation in the southern portion of the Gulf of California. Deep Sea Research Part I: Oceanographic Research Papers, 53(1), 188-200. doi: https://doi.org/10.1016/j.dsr.2005.09.010
Clarke, A. J., & Shi, C. (1991). Critical frequencies at ocean boundaries. Journal of Geophysical Research Oceans, 96(C6). doi: https://doi.org/10.1029/91JC00933
Collins, C. A., & R. Castro (2022). Observations of the exchange of ocean waters between the Pacific Ocean and the Gulf of California. Ocean and Coastal Res, 70(1), e22040. doi: http://doi.org/10.1590/2675-2824070.22036cac
Collins, C. A., Garfield, N., Mascarenhas Jr. A. S. and Sperman, M. G. (1997). Ocean current across the entrance to the Gulf of California. Journal of Geophysical Research Oceans 102(C9). doi: https://doi.org/10.1029/97JC01302
Godínez, V. M., E. Beier, M. F. Lavín, and J. A. Kurczyn (2010). Circulation at the entrance of the Gulf of California from satellite altimeter and hydrographic observations, Journal Geophysical Research Oceans, 115(C4), 007, doi: https://doi.org/10.1029/2009JC005705
Gómez-Valdivia, F., A. Parés-Sierra, & A. L. Flores-Morales (2015). The Mexican Coastal Current: A subsurface seasonal bridge that connects the tropical and subtropical Northeastern Pacific. Continental Shelf Research, 110, 100–107. doi: https://doi.org/10.1016/j.csr.2015.10.010
Kessler, W. S. (2006). The circulation of the eastern tropical Pacific: A review. Progress in Oceanography. 69(2-4), 181–217. doi: https://doi.org/10.1016/j.pocean.2006.03.009
Lavín, M. F., & S. G. Marinone. (2003). An Overview of the Physical Oceanography of the Gulf of California. In O.U. Velasco, J. Sheinbaum & J. Ochoa (Eds) Nonlinear Processes in Geophysical Fluid Dynamics. (pp. 173-204). Springer Dordrecht.
Lavín, M. F., E. Beier, J. Gómez‐Valdés, V. M. Godínez, and J. García (2006). On the summer poleward coastal current off SW México, Geophysical Research Letters, 33(2), L02601, doi: https://doi.org/10.1029/2005GL024686
Lavín, M. F., R. Durazo., E. Palacios., M. L. Argote, & L. Carrillo (1997). Lagrangian observations of the circulation in the northern Gulf of California. Journal of Physical Oceanography, 27(10), 2298-2305. doi: https://doi.org/10.1175/1520-0485(1997)027<2298:LOOTCI>2.0.CO;2
Lavín, M. F., R. Castro, E. Beier, & V.M. Godínez (2013), Mesoscale eddies in the southern Gulf of California during summer: Characteristics and interaction with the wind stress, Journal of Geophysical Research Oceans, 118(3), 1367-1381, doi: https://doi.org/10.1002/jgrc.20132
López, M., J. Candela, & M. L. Argote (2006). Why does Ballenas Channel have the coldest SST in the Northern Gulf of California? Geophysical Research Letters, 33(11), L11603. doi: https://doi.org/10.1029/2006GL025908
López, M., L. Flores-Mateos, & J. Candela (2021). Tidal currents at the sills of the Northern Gulf of California. Cont. Shelf Res., 227, doi: https://doi.org/10.1016/j.csr.2021.104513
Marinone, S. G. (1997). Tidal residual currents in the Gulf of California: Is the M2 tidal constituent sufficient to induce them? Journal of Geophysical Research Oceans, 102(C4), 8611-8623. doi: https://doi.org/10.1029/96JC03835
Martínez Alcala, Jose Antonio (2002), Modeling studies of mesoscale circulation in the Gulf of California. [Tesis de Doctorado]. Oregon State University.
Mascarenhas Jr., A. S., R. Castro, C. A. Collins, & R. Durazo (2004). Seasonal variation of geostrophic velocity and heat flux at the entrance to the Gulf of California, Mexico. Journal of Geophysical Research Oceans, 109(C07). doi: https://doi.org/10.1029/2003JC002124
Navarro, R., M. Lopez, and J. Candela (2016), Seasonal cycle of near-bottom transport and currents in the northern Gulf of California, Journal of Geophysical Research Oceans, 121(12), 8621–8634, doi: https://doi.org/10.1002/2016JC012063
Pegau, W. S., E. Boss, & A. Martínez (2002). Ocean color observations of eddies during the summer in the Gulf of California. Geophysical Research Letters, 29(9). doi: https://doi.org/10.1029/2001GL014076
Portela E. et al. (2016). Water Masses and Circulation in the Tropical Pacific off Central Mexico and Surrounding Areas. Journal of Physical Oceanography, 46(10), 3069-3081. doi: https://doi.org/10.1175/JPO-D-16-0068.1
Ripa, P. (1990), Seasonal circulation in the Gulf of California, Ann. Geophys., 8(7-8), 559–564.
Ripa, P. (1997). Towards a physical explanation of the seasonal dynamics and thermodynamics of the Gulf of California. Journal of Physical Oceanography, 27(5), 597–614. doi: https://doi.org/10.1175/1520-0485(1997)027<0597:TAPEOT>2.0.CO;2
Ripa, P., and S. G. Marinone (1989), Seasonal variability of temperature, salinity, velocity, vorticity and sea level in the central Gulf of California, as inferred from historical data, Quarterly Journal of the Royal Meteorological Society, 115(488), 887-913. doi: https://doi.org/10.1002/qj.49711548807
Talley, L. D., G. L. Pickard, W. J. Emery, & J. H. Swift (2011). Descriptive Physical Oceanography, Sixth Ed. Academic Press. doi: https://doi.org/10.1016/C2009-0-24322-4
Zamudio, L., E. J. Metzger, & P. Hogan (2011). Modeling the seasonal and interannual variability of the northern Gulf of California salinity, Journal of Geophysical Research Oceans, 116(C2). doi: https://doi.org/10.1029/2010JC006631
Zamudio, L., E. J. Metzger, & P. J. Hogan (2010). Gulf of California response to Hurricane Juliette. Ocean Modelling, 33(1-2), 20-32. doi: https://doi.org/10.1016/j.ocemod.2009.11.005
Zamudio, L., P. Hogan, & E. J/ Metzger (2008). Summer generation of the Southern Gulf of California eddy train. Journal of Geophysical Research, 113(C6). doi: https://doi.org/10.1029/2007JC004467