The role of upper level diffluence in the Tropical Easterly Jet in the formation of the recent strongest Atlantic hurricanes

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Authors

T. N. Krishnamurti, Nirupam Karmakar , Vasubandhu Misra , Bappaditya Nag, Dipak Sahu, Sarvesh Dubey, Ziad Haddad

Abstract

In this paper we report the evidence of the potential role of diffluence in the 200hPa wind field off the coast of West Africa in the formation of a significant number of Category 4 and Category 5 hurricanes in the recent decade. It is shown that on an average of 65% cases of hurricanes at Category 4 and above is preceded by upper level diffluence in the Tropical Easterly Jet (TEJ) by 0–3 days. This TEJ is the outflow from the southern flank of the Tibetan anticyclone from the Asian monsoon region.

DOI

https://doi.org/10.31223/osf.io/7yafp

Subjects

Atmospheric Sciences, Meteorology, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Keywords

Atlantic hurricanes; Upper level divergence; Diffluence

Dates

Published: 2018-04-08 15:45

License

CC BY Attribution 4.0 International

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