The response of extratropical cyclones in the Southern Hemisphere to stratospheric ozone depletion in the 20th century

This study explores the impact of Antarctic stratospheric ozone depletion on extratropical cyclones. Output from the Community Atmosphere Model is combined with a Lagrangian cyclone-tracking algorithm to identify the response of Southern Hemisphere extratropical cyclones to ozone and greenhouse gas...

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Bibliographic Details
Published in:Atmospheric Science Letters
Main Authors: Grise, Kevin M., Son, Seok-Woo, Correa, Gustavo J. P., Polvani, Lorenzo M.
Format: Article in Journal/Newspaper
Language:unknown
Published: John Wiley & Sons Inc. 2019
Subjects:
FEATURE TRACKING
CLIMATE-CHANGE
STORM TRACKS
REANALYSIS
RESOLUTION
MODELS
JET
extratropical cyclones
stratospheric ozone
Southern Hemisphere
Antarc*
Antarctic
Southern Ocean
Online Access:https://hdl.handle.net/10371/207512
https://doi.org/10.1002/asl2.458
Description
Summary:This study explores the impact of Antarctic stratospheric ozone depletion on extratropical cyclones. Output from the Community Atmosphere Model is combined with a Lagrangian cyclone-tracking algorithm to identify the response of Southern Hemisphere extratropical cyclones to ozone and greenhouse gas forcings over the period 1960-2000. Stratospheric ozone depletion induces a significant poleward shift in cyclone frequency over the Southern Ocean, but has minimal influence on cyclone intensity and lifetime. The response of the cyclones to late 20th century greenhouse gas increases has similar characteristics, but falls within the range of natural variability in the model. Y 1

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