Sea surface temperature in continental and insular coastal Colombian waters: observations of the recent past and near-term numerical projections

Villegas, Nancy; Málikov, Igor; Farneti, Riccardo

doi:10.3856/vol49-issue2-fulltext-2481

Cited by 4 publications

(3 citation statements)

References 66 publications

(94 reference statements)

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“…The overall behavior of the current profile in the study area for the semester showed surface currents to the south-east (90-170 • ) with mean velocities of 0.5 m/s and a maximum of 0.8 m/s (Figures 7 and 12). When surface winds decrease from August to November due to the weakening of the CLLJ [22,38,[43][44][45], the Caribbean Counter Current (CCC) or the Panama-Colombia Counter current are affected, reducing its presence in the central coastal area (CCA) of the Colombian Caribbean [26]. When CCC turns back from the CCA to the north area of Colombian Caribbean, the Panama Colombia Counter Current (PCCC) [38] flows northmost near the Colombian coast carrying warm waters and forming a mixing zone when approaching the Magdalena River's mouth [25].…”

Section: Dynamics Of the Water Columnmentioning

confidence: 99%

Hydrokinetic Energy and Transient Accelerations of Marine Currents in Colombian Nearshore Waters

Rueda-Bayona,

Cabello Eras,

Caicedo-Laurido

et al. 2023

Water

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The transient acceleration of ocean currents, or internal waves, is hard to detect, because it does not have climate variability or regular manifestation in the sea. This fluctuation affects not only short-term oceanographic processes but also the hydrokinetic generation of power and the structural health of ocean technologies. Identifying and understanding the mechanisms that generate internal waves require long-term data on the kinetic and viscous–turbulent parameters of the water column measured over long intervals. In this sense, this study analyzed current profiles in nearshore waters (8.9 m depths) measured over six months in the Colombian Caribbean Sea and found internal waves due to the manifestation of transient acceleration propagating in two of the three layers of the water column. The analyzed time series of currents and turbulent kinetic profiles evidenced that transient waves occurred during changes in the surface winds. The applied methodology in this research allowed, for the first time in the study area, the detection of transient accelerations (±0.25 m/s2) that modified the hydrokinetic energy of the water column over short-term periods (6–24 h).

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Section: Dynamics Of the Water Columnmentioning

confidence: 99%

Hydrokinetic Energy and Transient Accelerations of Marine Currents in Colombian Nearshore Waters

Rueda-Bayona,

Cabello Eras,

Caicedo-Laurido

et al. 2023

Water

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“…Climate in the Panama Bight is driven by the meridional translation of the Intertropical Convergence Zone (ITCZ) throughout the year. From December to April, the ITCZ moves southward, reaching its southernmost position at ∼ 1 • N (Dimar, 2020; Poveda et al, 2006;Villegas et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Seasonal and El Niño–Southern Oscillation-related ocean variability in the Panama Bight

Parra¹,

Giraldo²,

Muñoz³

et al. 2023

Ocean Sci.

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Abstract. In the Panama Bight, two different seasonal surface circulation patterns coincide with a strong mean sea level variation, as observed from 27 years of absolute dynamic topography (ADT) and the use of self-organizing maps. From January to April, a cyclonic gyre with a strong southwestward Panama Jet Surface Current (PJSC) dominates the basin circulation, forced by the Panama surface wind jet that also produces upwelling, reducing sea surface temperature (SST), increasing sea surface salinity (SSS) and causing an ADT decrease. From June to December, the Choco surface wind jet enhances SST, precipitation and river runoff, which reduces SSS, causing an ADT rise, which in turn forces a weak circulation in the bight, vanishing the PJSC. Interannual variability in the region is strongly affected by El Niño–Southern Oscillation (ENSO); however this climatic variability does not modify the seasonal circulation patterns in the Panama Bight. In contrast, the positive (negative) ENSO phase increases (decreases) SST and ADT in the Panama Bight, with a mean annual difference of 0.9 ∘C and 9.6 cm, respectively, between the two conditions, while its effect on SSS is small. However, as the strong seasonal SST, SSS and ADT ranges are up to 2.2 ∘C, 2.59 g kg−1 and 28.3 cm, the seasonal signal dominates over interannual variations in the bight.

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“…Climate in the Panama Bight is driven by the meridional translation of the Intertropical Convergence Zone (ITCZ) through the year. From December to April, the ITCZ moves southward reaching its southernmost position at ~1°N (Dimar, 2020; Poveda et al, 2006;Villegas et al, 2021). During this season, north trade winds from the Caribbean Sea cross the Panama Isthmus through orographic gaps, forming the Panama surface wind jet, that affects the Panama Bight ~400 km towards the 55 equator (Rueda Bayona et al, 2007).…”

mentioning

confidence: 99%

Seasonal and ENSO-related ocean variability in the Panama Bight

Torres

Giraldo²,

Muñoz³

et al. 2022

Preprint

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Abstract. In the Panama Bight, a reverse seasonal surface circulation coincides with a strong mean sea level variation, as observed from 27 years of Absolute Dynamic Topography (ADT) and the use of Self-Organizing Maps. From January to April, a cyclonic gyre dominates the basin circulation, forced by the Panama surface wind jet that also produce upwelling, reducing Sea Surface Temperature (SST) and increasing Sea Surface Salinity (SSS), causing an ADT decrease. From June to December, the Choco surface wind jet enhances SST, precipitation and river runoff, which reduces SSS causing an ADT rise, which forces a weak anticyclonic circulation. Interannual variability in the region is strongly affected by ENSO, however this climatic variability does not modify the seasonal circulation patterns in the Panama Bight. On the contrary, ENSO positive (negative) phase increases (decreases) SST and ADT in the Panama Bight, with a mean annual difference of 0.9 °C and 9.1 cm respectively between the two conditions, while its effect in SSS is small. However, as the strong seasonal SST, SSS and ADT ranges are up to 2.2 °C, 2.59 gr kg-1 and 28.5 cm, the seasonal signal dominates over interannual variations in the Bight.

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Sea surface temperature in continental and insular coastal Colombian waters: observations of the recent past and near-term numerical projections

Cited by 4 publications

References 66 publications

Hydrokinetic Energy and Transient Accelerations of Marine Currents in Colombian Nearshore Waters

Hydrokinetic Energy and Transient Accelerations of Marine Currents in Colombian Nearshore Waters

Seasonal and El Niño–Southern Oscillation-related ocean variability in the Panama Bight

Seasonal and ENSO-related ocean variability in the Panama Bight

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