Sobre la existencia de una celda de circulación atmosférica sobre el Caribe y su efecto en las corrientes de Ekman del Caribe suroccidental

Amaya, Carlos Alberto Andrade; Barton, Eric D.

doi:10.26640/01200542.31.73_94

Cited by 5 publications

(17 citation statements)

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“…The CLLJ is the surface component of the cell with upward convective processes at the Caribbean side of Central America, and low-level divergence and downward drying over La Guajira. According to Andrade and Barton [ 42 ] and Hidalgo et al [ 43 ], the convergent zone is connected with another cell in the west, with the sinking of dry air over the Eastern Tropical Pacific, where the drying favors the southward displacement of the Inter Tropical Convergence Zone (ITCZ). This could be the link between ENSO and CLLJ that produces the seasonal and interannual patterns of water masses observed here.…”

Section: Discussionmentioning

confidence: 99%

Freshwater exchanges and surface salinity in the Colombian basin, Caribbean Sea

et al. 2017

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Despite the heavy regional rainfall and considerable discharge of many rivers into the Colombian Basin, there have been few detailed studies about the dilution of Caribbean Surface Water and the variability of salinity in the southwestern Caribbean. An analysis of the precipitation, evaporation and runoff in relation to the climate variability demonstrates that although the salt balance in the Colombian Basin overall is in equilibrium, the area south of 12°N is an important dilution sub-basin. In the southwest of the basin, in the region of the Panama-Colombia Gyre, Caribbean Sea Water is diluted by precipitation and runoff year round, while in the northeast, off La Guajira, its salinity increases from December to May by upwelling. At the interannual scale, continental runoff is related to El Niño Southern Oscillation, and precipitation and evaporation south of 12°N are related to the Caribbean Low Level Jet. During El Niño years the maximum salinification occurs in the dry season (December-February) while in La Niña years the maximum dilution (or freshening), reaching La Guajira Coastal Zone, occurs in the wet season (September-November).

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Section: Discussionmentioning

confidence: 99%

Freshwater exchanges and surface salinity in the Colombian basin, Caribbean Sea

et al. 2017

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“…The Caribbean coast of Colombia is a tropical environment with seasonal variations in rainfall ( Figure 2) from the dry season (December-March) and the transitional seasonal (April-July) to the rainy season (August-November) [22,23]. The main regulator of rain cycles throughout the Colombian territory is the Intertropical Convergence Zone [25,26]. This low pressure equatorial system follows the synchronization of the sun [27] and a southern movement (between 27.5° S and 27.5° N), having the largest amount of solar energy received by the planet [28].…”

Section: Study Areamentioning

confidence: 99%

“…The presence of climbing plants was also observed-they generate overweight and strangulation of stems and branches [32]. The system has been affected by coastal erosion, increased sedimentation processes, and anthropogenic activities The main regulator of rain cycles throughout the Colombian territory is the Intertropical Convergence Zone [25,26]. This low pressure equatorial system follows the synchronization of the sun [27] and a southern movement (between 27.5 • S and 27.5 • N), having the largest amount of solar energy received by the planet [28].…”

Section: Study Areamentioning

confidence: 99%

“…This low pressure equatorial system follows the synchronization of the sun [27] and a southern movement (between 27.5 • S and 27.5 • N), having the largest amount of solar energy received by the planet [28]. Other oscillations, such as Maiden and Julian, as well as the variability associated with the El Niño and La Niña phenomena (Southern Oscillation-ENSO) in the Pacific, contribute especially to the intensity of the precipitation anomalies on the Colombian Caribbean coast [26]. Tide has mixed semi-diurnal periodicity and microtidal variability, with maximum values of 60 cm [22].…”

Section: Study Areamentioning

confidence: 99%

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Mangrove Forests Evolution and Threats in the Caribbean Sea of Colombia

Daza¹,

Moreno

Portz

et al. 2020

Water

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Colombia has approximately 379,954 hectares of mangrove forests distributed along the Pacific Ocean and the Caribbean Sea coasts. Such forests are experiencing the highest annual rate of loss recorded in South America and, in the last three decades, approximately 40,000 hectares have been greatly affected by natural and, especially, human impacts. This study determined, by the use of Landsat multispectral satellite images, the evolution of three mangrove forests located in the Colombian Caribbean Sea: Malloquín, Totumo, and La Virgen swamps. Mangrove forest at Mallorquín Swamp recorded a loss of 15 ha in the period of 1985–2018, associated with alterations in forest hydrology, illegal logging, urban growth, and coastal erosion. Totumo Swamp lost 301 ha in the period 1985–2018 associated with changes in hydrological conditions, illegal logging, and increased agricultural and livestock uses. La Virgen Swamp presented a loss of 31 ha in the period of 2013–2018 that was linked to the construction of a roadway, alterations of hydrological conditions, illegal logging, and soil urbanization, mainly for tourist purposes. Although Colombian legislation has made efforts to protect mangrove ecosystems, human activities are the main cause of mangrove degradation, and thus it is mandatory for the local population to understand the value of the ecosystem services provided by mangroves.

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“…The meteorology of the Caribbean can be described in terms of wind and rainfall, as well as the space-time variability determined by changes in atmospheric pressure in the intertropical convergence zone (ITCZ) of the trade winds, a low-pressure belt near Ecuador that controls the regimes of precipitation and winds (Andrade and Barton, 2013). In the dry season (December to June) or windy, the ITCZ is in a more equatorial position (0-5 °S) and the northern trade winds dominate the area.…”

Section: Windsmentioning

confidence: 99%

Comparación de las surgencias de la Guajira colombiana y del oriente venezolano

Gaspar¹,

Acero

2020

Bol. Investig. Mar. Costeras

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En el Caribe sur se presentan dos áreas principales de surgencia, la Guajira colombiana y el oriente de Venezuela; sin embargo, la producción pesquera es muy desigual, a pesar de que en la Guajira la intensidad del viento es mayor y teóricamente la surgencia es más intensa. Por esta razón,cual debería tener una producción pesquera mayor que la venezolana, lo que no ocurre. Se plantean las posibles causas de esta diferencia notable y se comentan aspectos relacionados con el viento, la hidrografía, la concentración de nutrientes, la biomasa del fitoplancton, la plataforma continental, el aporte de ríos, la presencia de islas y otros factores. El oriente de Venezuela tiene mayor fertilidad y producción pesquera porque la masa de agua subsuperficial subtropical es la que abastece la surgencia durante los primeros meses del año (sequía). En el segundo semestre, cuando la surgencia se relaja, el área se enriquece con materia orgánica del río Orinoco y el aporte de biomasa fitoplanctónica proveniente de lagunas costeras, golfos y bahías semicerradas. También juega un papel fundamental la amplitud de la plataforma continental con la presencia de archipiélagos, islas mayores y menores que causan enriquecimientos locales y la concentración y retención del plancton. Esto último aumenta la productividad biológica y propicia la reproducción de los organismos. En la Guajira, la surgencia podría estar influenciada por la contracorriente del Darién, que por su origen debe contener baja concentración de nutrientes inorgánicos; además, en esta zona no están presentes grandes ríos que aporten materia orgánica y la plataforma continental es poco amplia y no contiene islas que propicien el aumento de la productividad acuática. Para la comprensión de la surgencia en la Guajira, se sugieren estudios para el seguimiento in situ de la hidrografía, nutrientes inorgánicos, clorofila y la abundancia de fito y zooplancton.

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Sobre la existencia de una celda de circulación atmosférica sobre el Caribe y su efecto en las corrientes de Ekman del Caribe suroccidental

Abstract: On the existence of an atmosferic circulation cello ver the Caribbean and its effect on the Ekman´s currents in the southwestern Caribbean sea.

Cited by 5 publications

References 9 publications

Freshwater exchanges and surface salinity in the Colombian basin, Caribbean Sea

Freshwater exchanges and surface salinity in the Colombian basin, Caribbean Sea

Mangrove Forests Evolution and Threats in the Caribbean Sea of Colombia

Comparación de las surgencias de la Guajira colombiana y del oriente venezolano

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