Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California
A numerical model of the Gulf of California is used to study and compare the circulation due to a spatially homogeneous and time symmetric wind (VI) and one derived from QuikScat data (VO). The mean and seasonal evolution of the currents are presented for both cases, as well as their associated fiel...
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Iniversidad Autónoma de Baja California
2005
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oai:cienciasmarinas.com.mx:article-582019-04-24T19:19:31Z Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California Efecto de la variabilidad espacial y temporal del viento sobre la circ ulación en el Golfo de California Jiménez, A Marinone, SG Parés-Sierra, A wind variability circulation Gulf of California variabilidad del viento circulación Golfo de California A numerical model of the Gulf of California is used to study and compare the circulation due to a spatially homogeneous and time symmetric wind (VI) and one derived from QuikScat data (VO). The mean and seasonal evolution of the currents are presented for both cases, as well as their associated fields of kinetic energy, vorticity and horizontal divergence. On average, the currents generated by VI are weaker than those of VO and with a simpler spatial structure: anticyclonic circulation in the south and irregular in the north. In both cases, variability is larger on the continental coast in shallow waters but differs in the duration of the cyclonic/anticyclonic gyre in the northern basin. The magnitude of the currents also shows differences between the experiments because of stronger winds from autumn to winter for VO and during summer for VI. The average of the kinetic energy is greater for both experiments on the continental side. High relative vorticity cores are present along the gulf for VO. Close to the coast, the divergence and convergence is large in both cases, and large only for VO far from the coast. The temporal evolution of the kinetic energy, vorticity and divergence is more irregular for VO. Vorticity and divergence is generated only on the coasts and for strong winds for VI, whereas for VO it is also produced as a result of the wind stress curl. Con un modelo numérico del Golfo de California, se estudió y comparó su circulación debida al forzamiento de un viento espacialmente homogéneo y de evolución temporal simétrica (VI), y de otro derivado de datos observados de QuikScat (VO). Se presentan las diferencias entre ambos experimentos: del promedio y de la evolución estacional del campo de corrientes, densidad de energía cinética, vorticidad relativa y divergencia horizontal. En el promedio, las corrientes generadas por el VI son más débiles a VO con una estructura más simple: circulación anticiclónica en el sur e irregular en el norte. En ambos la variabilidad es mayor sobre la costa continental en aguas someras y difieren en la duración del giro ciclónico/anticiclónico en la cuenca norte. La magnitud del campo de corrientes también muestra diferencias entre experimentos, debido a la mayor intensidad del viento de otoño a invierno para el VO y en verano para el VI. El promedio de la energía cinética es mayor sobre la costa continental en ambos experimentos. Con VO se presenta alta vorticidad relativa a lo largo del golfo en una serie de núcleos intercalados en su signo. Cerca de las costas la divergencia y convergencia son mayores con ambos forzamientos; lejos de las costas éstas son mayores sólo con VO. La evolución temporal de la energía, vorticidad y divergencia es más irregular en el experimento VO. La vorticidad y divergencia con VI se origina sólo con viento fuerte y en las costas, mientras que en VO se produce también por el rotor del viento aun cuando éste no sea muy fuerte. Iniversidad Autónoma de Baja California 2005-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/58 10.7773/cm.v31i2.58 Ciencias Marinas; Vol. 31 No. 2 (2005); 357-368 Ciencias Marinas; Vol. 31 Núm. 2 (2005); 357-368 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/58/40 |
| institution |
Ciencias Marinas |
| collection |
OJS |
| language |
eng |
| format |
Online |
| author |
Jiménez, A Marinone, SG Parés-Sierra, A |
| spellingShingle |
Jiménez, A Marinone, SG Parés-Sierra, A Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| author_facet |
Jiménez, A Marinone, SG Parés-Sierra, A |
| author_sort |
Jiménez, A |
| title |
Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| title_short |
Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| title_full |
Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| title_fullStr |
Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| title_full_unstemmed |
Effect of the spatial and temporal variability of winds on the circulation in the Gulf of California |
| title_sort |
effect of the spatial and temporal variability of winds on the circulation in the gulf of california |
| description |
A numerical model of the Gulf of California is used to study and compare the circulation due to a spatially homogeneous and time symmetric wind (VI) and one derived from QuikScat data (VO). The mean and seasonal evolution of the currents are presented for both cases, as well as their associated fields of kinetic energy, vorticity and horizontal divergence. On average, the currents generated by VI are weaker than those of VO and with a simpler spatial structure: anticyclonic circulation in the south and irregular in the north. In both cases, variability is larger on the continental coast in shallow waters but differs in the duration of the cyclonic/anticyclonic gyre in the northern basin. The magnitude of the currents also shows differences between the experiments because of stronger winds from autumn to winter for VO and during summer for VI. The average of the kinetic energy is greater for both experiments on the continental side. High relative vorticity cores are present along the gulf for VO. Close to the coast, the divergence and convergence is large in both cases, and large only for VO far from the coast. The temporal evolution of the kinetic energy, vorticity and divergence is more irregular for VO. Vorticity and divergence is generated only on the coasts and for strong winds for VI, whereas for VO it is also produced as a result of the wind stress curl. |
| publisher |
Iniversidad Autónoma de Baja California |
| publishDate |
2005 |
| url |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/58 |
| _version_ |
1715723929397493760 |
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