Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 2.289 IF 2.289
  • IF 5-year value: 2.756 IF 5-year
    2.756
  • CiteScore value: 2.76 CiteScore
    2.76
  • SNIP value: 1.050 SNIP 1.050
  • IPP value: 2.65 IPP 2.65
  • SJR value: 1.554 SJR 1.554
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 41 Scimago H
    index 41
  • h5-index value: 30 h5-index 30
Discussion papers
https://doi.org/10.5194/os-2019-51
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-2019-51
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 12 Jun 2019

Research article | 12 Jun 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Ocean Science (OS).

The Impact of Upwelling on the Intensification of Anticyclonic Ocean Eddies in the Caribbean Sea

Carine G. van der Boog1, Julie D. Pietrzak1, Henk A. Dijkstra2, Nils Brüggemann5, René M. van Westen2, Rebecca K. James3, Tjeerd J. Bouma3, Riccardo E. M. Riva4, D. Cornelis Slobbe4, Roland Klees4, Marcel Zijlema1, and Caroline A. Katsman1 Carine G. van der Boog et al.
  • 1Environmental Fluid Mechanics, Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
  • 2Institute for Marine and Atmospheric Research, Utrecht University, Princetonplein 5, 3584 CC Utrecht, the Netherlands
  • 3Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research and Utrecht University, Korringaweg 7, 4401 NT Yerseke, the Netherlands
  • 4Geoscience and Remote Sensing, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands
  • 5University of Hamburg, Bundesstrasse 53, 20146 Hamburg, Germany

Abstract. The mesoscale variability in the Caribbean Sea is dominated by anticyclonic eddies that are formed in the eastern part of the basin. These anticyclones intensify on their path westward while they pass the coastal upwelling region along the Venezuelan and Colombian coast. In this study, we used a regional model to show that this westward intensification of Caribbean anticyclones is driven by the advection of cold upwelling filaments. These dense filaments are advected by the anticyclones, leading to an increase of the horizontal density gradients at the western side of the anticyclones. Following the thermal wind balance, the increased density gradients result in an increase of the vertical shear of the anticyclones and to their westward intensification. To assess the impact of variations in upwelling on the anticyclones, several simulations were performed in which the northward Ekman transport (and thus the upwelling strength) is altered. As expected, stronger (weaker) upwelling is associated with more stronger (weaker) offshore cooling and a more (less) westward intensification of the anticyclones. The simulations with weaker upwelling show farther advection of the Amazon and Orinoco River plumes into the basin. The dispersion of the river plumes affects the formation process of the anticyclones, where the horizontal density gradients were mainly determined by the salinity gradients of the river plume and not by temperature gradients that were associated with upwelling.

Carine G. van der Boog et al.
Interactive discussion
Status: open (until 07 Aug 2019)
Status: open (until 07 Aug 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Carine G. van der Boog et al.
Carine G. van der Boog et al.
Viewed  
Total article views: 99 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
71 27 1 99 1 0
  • HTML: 71
  • PDF: 27
  • XML: 1
  • Total: 99
  • BibTeX: 1
  • EndNote: 0
Views and downloads (calculated since 12 Jun 2019)
Cumulative views and downloads (calculated since 12 Jun 2019)
Viewed (geographical distribution)  
Total article views: 76 (including HTML, PDF, and XML) Thereof 75 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 20 Jun 2019
Publications Copernicus
Download
Short summary
We use a model of the Caribbean Sea to study how coastal upwelling along Venezuela impacts the evolution of energetic anticyclonic eddies. We show that the anticyclones grow by the advection of the cold upwelling filaments. These filaments increase the density gradient and vertical shear of the anticyclones. Furthermore, we show that stronger upwelling results in stronger eddies, while model simulations with weaker upwelling contain weaker eddies.
We use a model of the Caribbean Sea to study how coastal upwelling along Venezuela impacts the...
Citation