Articles | Volume 19, issue 1
https://doi.org/10.5194/os-19-121-2023
https://doi.org/10.5194/os-19-121-2023
Research article
 | 
27 Jan 2023
Research article |  | 27 Jan 2023

Seasonal cycle of sea surface temperature in the tropical Angolan Upwelling System

Mareike Körner, Peter Brandt, and Marcus Dengler

Data sets

tavgM_2d_ocn_Nx: MERRA 2D IAU Ocean Surface Diagnostic, Monthly Mean V5.2.0 Global Modeling and Assimilation Office (GMAO) https://doi.org/10.5067/LH0VEHYM7Y8Z

Global Ocean OSTIA Sea Surface Temperature and Sea Ice Reprocessed S. Good, E. Fiedler, C. Mao, M. J. Martin, A. Maycock, R. Reid, J. Roberts-Jones, T. Searle, J. Waters, J. While, and M. Worsfold https://doi.org/10.48670/moi-00168

OSCAR third deg. Ver. 1. PO.DAAC ESR https://doi.org/10.5067/OSCAR-03D01

Global Ocean Physics Reanalysis J.-M. Lellouche, E. Greiner, R. Bourdallé Badie, G. Garric, A. Melet, M. Drévillon, C. Bricaud, M. Hamon, O. Le Galloudec, C. Regnier, T. Candela, C.-E. Testut, F. Gasparin, G. Ruggiero, M. Benkiran, Y. Drillet, and P.-Y. Le Traon https://doi.org/10.48670/moi-00021

Online Data: Eppley VGPM Ocean Productivity http://orca.science.oregonstate.edu/1080.by.2160.8day.hdf.eppley.m.chl.m.sst.php

emote Sensing Systems ASCAT C-2015 Daily Ocean Vector Winds on 0.25 deg grid, Version 02.1 L. Ricciardulli and F. J. Wentz https://www.remss.com/missions/ascat/

Remote Sensing Systems QuikSCAT Ku-2011 Monthly Ocean Vector Winds on 0.25 deg grid, Version 4 L. Ricciardulli, F. J. Wentz, and D. K. Smith https://www.remss.com/missions/qscat/

Upper-ocean microstructure data from the tropical Angolan upwelling system M. Körner P. Brandt, and M. Dengler https://doi.org/10.1594/PANGAEA.953869

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Short summary
The coastal waters off Angola host a productive ecosystem. Surface waters at the coast are colder than further offshore. We find that surface heat fluxes warm the coastal region more strongly than the offshore region and cannot explain the differences. The influence of horizontal heat advection is minor on the surface temperature change. In contrast, ocean turbulence data suggest that cooling associated with vertical mixing is an important mechanism to explain the near-coastal cooling.