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Title: Wind variability in the Canary Current during the last 70 years
Authors: Marrero Betancort, Nerea 
Marcello, Javier 
Rodríguez Esparragón, Dionisio 
Hernández-León, Santiago 
UNESCO Clasification: 250616 Teledetección (Geología)
2502 Climatología
2510 Oceanografía
Keywords: Canary current
Wind variability
Issue Date: 2020
Project: Análisis de Series Temporales de Parámetros Atmosféricos de Teledetección Por 
Journal: Ocean Science 
Abstract: Climate evolves following natural variability, and knowledge of these trends is of paramount importance to understand future scenarios in the frame of global change. Obtaining local data is also of importance since climatic anomalies depend on the geographical area. In this sense, the Canary Current is located in one of the major eastern boundary current systems and is mainly driven by the trade winds. The latter promote Ekman transport and give rise to one of the most important upwelling zones of the world on the northwest African coast. Nearly 30 years ago, Bakun (1990) raised a hypothesis contending that coastal upwelling in eastern boundary upwelling systems (EBUSs) might be intensified by global warming due to the enhancement of the trade winds, increasing pressure differences between the ocean and the continent. Using available NCEP/NCAR wind data north of the Canary Islands from 1948 to 2017, we show that trade wind intensity experienced a net decrease of 1 m s-1 span classCombining double low line"inline-formula">-1</span>. Moreover, these winds are strongly influenced, as expected, by large-scale atmospheric patterns such as the North Atlantic Oscillation (NAO). In addition, we found a relationship between the wind pattern and the Atlantic Multidecadal Oscillation (AMO), indicating that the ocean contributes to multidecadal atmospheric variability in this area of the ocean with a considerable lag (<10years).
ISSN: 1812-0784
DOI: 10.5194/os-16-951-2020
Source: Ocean Science [ISSN 1812-0784], v. 16 (4), p. 951-963, (Agosto 2020)
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