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AuthorAbdulla, Cheriyeri Poyil
AuthorAboobacker, Valliyil Mohammed
AuthorShanas, Puthuveetil Razak
AuthorVijith, Vijayakumaran
AuthorSajeev, Raveendran
AuthorVethamony, Ponnumony
Available date2022-09-07T06:30:34Z
Publication Date2022-01-01
Publication NameInternational Journal of Climatology
Identifierhttp://dx.doi.org/10.1002/joc.7767
CitationAbdulla, C. P., Aboobacker, V. M., Shanas, P. R., Vijith, V., Sajeev, R., & Vethamony, P. (2022). Climatology and variability of wind speeds along the southwest coast of India derived from Climate Forecast System Reanalysis winds. International Journal of Climatology, 1– 17. https://doi.org/10.1002/joc.7767
ISSN08998418
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85133467045&origin=inward
URIhttp://hdl.handle.net/10576/33732
AbstractWind climate along the southwest coast of India (Kerala coast) has been analysed using 41 years of Climate Forecast System Reanalysis (CFSR) winds to delineate long-term trends and variability. The study reveals significant decreasing trends in annual mean wind speeds, of the order of −2.0 to −2.5 cm·s−1·year−1, for the period 1979–2019. Southwest monsoon has contributed the highest weakening trends (−3.0 to −4.0 cm·s−1·year−1) due to significant decrease in the southwesterly/westerly wind speeds. The wind climate and trends during the northeast monsoon and premonsoon seasons have been characterized largely by the prevalence of sea breeze and shamal–makran wind systems. We find that the intensity of both sea breeze and shamal–makran wind systems reduces from north to south along the Kerala coast, which is in consistent with the earlier studies. Decadal oscillations in wind speeds, driven by the decadal variability in large-scale atmosphere–ocean circulations, are evident. Recent changes in the frequency of occurrence of Indian Ocean Dipole in the Indian Ocean have determined the overturning trends since 2010, and resulted in increasing trends in the current decade along the central and northern coasts of Kerala. Furthermore, interannual variability in wind speeds has been linked to the El Niño–Southern Oscillations (ENSO) and Indian Ocean Dipole (IOD).
Languageen
PublisherWiley
SubjectArabian Sea
CFSR winds
El Niño–Southern Oscillations
Indian Ocean Dipole
Kerala coast
TitleClimatology and variability of wind speeds along the southwest coast of India derived from Climate Forecast System Reanalysis winds
TypeArticle
ESSN1097-0088
dc.accessType Full Text


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