Open ocean temperature and salinity trends in the Canary Current Large Marine Ecosystem
Authors
Vélez-Belchí, P. (Pedro); González-Carballo, M. (Marta); Pérez-Hernández, M.D. (María Dolores); Hernández-Guerra, A.Date
2015-06-10Type
bookPartKeywords
Sea surface temperature, Upwelling, Downwelling, Warming, Thermocline, Canary Current Large Marine Ecosystem, Northwest AfricaAbstract
The Sea Surface Temperature in the Canary Current Large Marine Ecosystem (CCLME) for the 32 years in
the period 1982‐2013 shows a mean warming trend of 0.28°C decade‐1. However, this overall warming
trend shows significant changes due to the influence of the different dynamical regimes that coexist in the
CCLME. Near the coast, in the area under the influence of the upwelling, between Cape Blanc and Cape
Beddouza, the warming trend is not statistically different from zero. Near the coast, but in the waters
under the influence of downwelling, between Cape Verde and Cape Blanc, the warming trend is higher
(>0.5°C decade‐1), and statistically significant. In the oceanic regions, there is a statistically significant trend
of 0.25°C decade‐1, a trend that is also observed in waters shallower than the permanent thermocline (200‐
600 dbar). This warming rate is density compensate, with an increase in salinity of 0.02 decade‐1. Neither
the intermediate waters nor the upper deep waters ...
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