ENSO influence on Bay of Bengal cyclogenesis confined to low latitudes

نویسندگان

چکیده

Abstract The low-latitudinal cyclones (LLCs, originating between 5°N–10°N) constitute ≈40% of tropical (TCs) formed in the Bay Bengal (BoB). We investigate interannual variability post-monsoonal (October to December) BoB LLCs and their teleconnection with El Niño Southern Oscillation (ENSO) Indian Ocean Dipole (IOD). It is found that years fewer number are associated anomalous equatorial easterlies largely connected positive IOD. Likewise, westerly phases, often La Niña negative IOD years, favour LLC formation by providing initial spin-up required for cyclogenesis. This ENSO/IOD TC frequency confined region little influence cyclogenesis north 10°N during ENSO except These results may help extend lead time improve seasonal prediction TCs.

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ژورنال

عنوان ژورنال: npj climate and atmospheric science

سال: 2022

ISSN: ['2397-3722']

DOI: https://doi.org/10.1038/s41612-022-00252-8