The modulation of tropical storm activity in the Western North Pacific by the Madden–Julian Oscillation in GEOS‐5 AGCM experiments

This study examines the influence of the Madden–Julian Oscillation (MJO) on tropical storm (TS) activity in the western North Pacific, using observations and GEOS‐5 simulations at 50‐km horizontal resolution. While GEOS‐5 produces an MJO of faster propagation and weaker amplitude, it nevertheless re...

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Bibliographic Details
Published in:Atmospheric science letters 2014-10, Vol.15 (4), p.335-341
Main Authors: Kim, Dongmin, Lee, Myong‐In, Kim, Hye‐Mi, Schubert, Siegfried D., Yoo, Jin Ho
Format: Article
Language:English
Subjects:
AGCM
Atmospheric sciences
Climate models
Computer simulation
GEOS‐5
Humidity
Madden-Julian oscillation
Marine
MJO
Modulation
Propagation
Seasonal variability
Seasonal variation
Seasonal variations
Simulation
Storms
Studies
Tropical climate
Tropical depressions
Tropical storms
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Summary:This study examines the influence of the Madden–Julian Oscillation (MJO) on tropical storm (TS) activity in the western North Pacific, using observations and GEOS‐5 simulations at 50‐km horizontal resolution. While GEOS‐5 produces an MJO of faster propagation and weaker amplitude, it nevertheless reproduces the observed modulation of TS activity by the MJO with the highest TS genesis and increased track density in the active phases of MJO. The study suggests that the simulation of the sub‐seasonal variability of TS activity could be improved by improving the simulations of the MJO in climate models.
ISSN:1530-261X
1530-261X
DOI:10.1002/asl2.509