DOI: 10.1029/2018JC014265
Scopus记录号: 2-s2.0-85052482094
论文题名: Surface Salinity Balance in the Tropical Pacific Off Mexico
作者: Portela E. ; Beier E. ; Barton E.D. ; Sánchez-Velasco L.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 8 起始页码: 5763
结束页码: 5776
语种: 英语
英文关键词: salinity balance
; salt advection by Mexican Coastal Current
; tropical Pacific off Mexico
英文摘要: A simplified analytical model was used to solve the salinity balance equation and study the relative contributions of freshwater flux and salt advection to the salinity tendency between the Gulf of Tehuantepec and Cabo Corrientes (14–22°N). The model used climatological mixed-layer salinity, satellite-derived geostrophic velocity and evaporation minus precipitation data in a four-domain scheme. The mean circulation derived from the model largely coincides with previous reports and suggests that, in the steady state, the Mexican Coastal Current is decoupled from the Tehuantepec region. The analysis of the time-dependent variability showed that the salt advection can be largely explained by the annual variations of the alongshore velocity (corresponding with the Mexican Coastal Current) and an average salinity. At the seasonal scale, the salt advection and the freshwater flux have similar contributions to the resulting salinity tendency. Near Tehuantepec, due to a local salinity regime, the analytical model does not represent well the observations, while in Manzanillo and Zihuatanejo the agreement between the model and the observations is good in both amplitude and phase. The accuracy of the model in representing the observations is improved in the first third of the year by inclusion of the semiannual scale and the nonlinear processes in the equation of salt advection. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113372
Appears in Collections: 气候减缓与适应
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作者单位: Centro de Investigación Científica y Educación Superior de Ensenada, Ensenada, Mexico; Now at Laboratoire de Physique des Océans, Ifremer, Plouzané, France; Centro de Investigación Científica y Educación Superior de Ensenada, Unidad La Paz, La Paz, Mexico; Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, Vigo, Spain; Departamento de Plancton y Ecología Marina, CICIMAR, Instituto Politécnico Nacional, La Paz, Mexico
Recommended Citation:
Portela E.,Beier E.,Barton E.D.,et al. Surface Salinity Balance in the Tropical Pacific Off Mexico[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(8)