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Mesoclimatic analysis of severe weather and ENSO interactions in North Carolina
Author(s) -
Rhome Jamie R.,
Niyogi Devdutta S.,
Raman Sethu
Publication year - 2000
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl011327
Subject(s) - tornado , climatology , el niño southern oscillation , environmental science , southern oscillation , severe weather , tropical cyclone , sea surface temperature , wind speed , meteorology , atmospheric sciences , storm , geology , geography
Connections between regional severe weather occurrences and El Niño/Southern Oscillation (ENSO) are investigated. Monthly (1950 –1989) occurrences of tornado and wind/hail frequency are compared with sea surface temperature (SST) indices and anomalies in the tropical Pacific. Analyses indicate increase in wind/hail events/ days, during the months of April through June of La Niña years. No direct evidence is found between tornado frequency and ENSO classes. Using seasonal composite anomalies of upper‐air patterns, it is concluded that La Niña patterns leads to enhanced convection over North Carolina.