Abstract

HIDALGO MAYO, Axel; MITRANI ARENAL, Ida  and  PEREZ RIVAS, Graciela. Detection of change in the significant wave height in the Cuban coast. Rev. Cubana Met. [online]. 2023, vol.29, n.3  Epub Sep 01, 2023. ISSN 2664-0880.

The objective of this work is to determine the changes of the significant wave height (Hsig) in the Cuban shore area during the period 1950-2022, as a contribution to the studies of climate variability that are developed in the country, within the framework of the Task Life. The Hsig data from the ERA5 reanalysis were used with temporal resolution of 6 h and spatial resolution of 0.5⁰ of latitude in that order, as well as the NAO (North Atlantic Oscillation) and ENSO (El Niño- South Oscillation) index. The last one is referred to the Niño3.4 index. Besides, extreme indices were applied for the detection of climate change referred to Hsig in the Cuban archipelago. The results show statistically significant changes in the habitual Hsig regime, around the 5% from 1981 on all the Cuban shore perimeter, except from Cabo San Antonio to Punta Maternillos, as well as an increasing annual linear trend of Hsig in all the Cuban coasts up to 0.002 m/year. It is concluded that the interannual variability of Hsig in the Cuban coasts has a higher correlation with the NAO, fundamentally, in both coasts of the eastern region, while from the multiannual ENSO has a greater influence, but it is basically reflected in the southern Cuban coast. On another hand, the extreme indicators of climate change show that the Cuban marine climate referred to Hsig from 1991 is becoming more extreme.

Keywords : extreme climate change index; significant wave height; climate variability; COWCLIP.

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