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The four regional varieties of South Asian monsoon low‐pressure systems and their modulation by tropical intraseasonal variability
Author(s) -
Deoras Akshay,
Hunt Kieran M. R.,
Turner Andrew G.
Publication year - 2021
Publication title -
weather
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.467
H-Index - 40
eISSN - 1477-8696
pISSN - 0043-1656
DOI - 10.1002/wea.3997
Subject(s) - monsoon , bay , bengal , climatology , low pressure area , indian subcontinent , precipitation , east asian monsoon , surface pressure , monsoon of south asia , geography , south asia , geology , oceanography , atmospheric pressure , meteorology , history , ancient history , ethnology
We carry out the first‐ever investigation of four regional varieties of South Asian monsoon low‐pressure systems (LPSs) that occur during June‐September 1979–2018. We find that long‐lived Bay of Bengal (BoB) LPSs are most intense, whereas those over Sri Lanka are least intense. While Arabian LPSs are least frequent, short‐lived BoB LPSs are most frequent and bring most precipitation to east India. We also find that tropical intraseasonal variability modulates genesis of these four LPS varieties.