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Variations in global tropical cyclone activity and the Madden-Julian Oscillation since the midtwentieth century
journal contribution
posted on 2023-05-18, 12:39 authored by Klotzbach, PJ, Oliver, ECJThe Madden-Julian oscillation (MJO) has been documented in previous studies to significantly impact tropical cyclone activity in all ocean basins. Most of these studies have utilized the Wheeler-Hendon index. This index is only available since 1974, the period over which remotely sensed outgoing longwave radiation data has been available. Our study utilizes a long reconstructed MJO index, based on surface pressures, which extends back to 1905. We document consistent modulation of tropical cyclone activity by the MJO in all basins over this time period. These modulations are shown to be remarkably stable over the entire analysis period.We also examine the combined impacts of El Niño-Southern Oscillation and the MJO on tropical cyclone activity in each basin over multidecadal time scales.
History
Publication title
Geophysical Research LettersVolume
42Issue
10Pagination
4199-4207ISSN
0094-8276Department/School
Institute for Marine and Antarctic StudiesPublisher
Amer Geophysical UnionPlace of publication
2000 Florida Ave Nw, Washington, USA, Dc, 20009Rights statement
Copyright 2015 American Geophysical UnionRepository Status
- Restricted