A Lagrangian "1-year climatology" of (deep) cross-tropopause exchange in the extratropical Northern Hemisphere

A Lagrangian methodology is applied to operational European Centre for Medium‐Range Weather Forecasts analyses to study upward cross‐tropopause exchange (troposphere to stratosphere exchange (TSE)) and downward cross‐tropopause exchange (stratosphere to troposphere exchange (STE)) in the extratropic...

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Bibliographic Details
Published in:Journal of Geophysical Research. D. Atmospheres 2002-01, Vol.107 (D2), p.ACL 13-1-ACL 13-16
Main Authors: Wernli, Heini, Bourqui, Michel
Format: Article
Language:English
Subjects:
stratosphere-troposphere exchange
trajectory analysis
tropopause dynamics
vertical transport
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Summary:A Lagrangian methodology is applied to operational European Centre for Medium‐Range Weather Forecasts analyses to study upward cross‐tropopause exchange (troposphere to stratosphere exchange (TSE)) and downward cross‐tropopause exchange (stratosphere to troposphere exchange (STE)) in the extratropical Northern Hemisphere for the period from May 1995 to April 1996. A residence time criterion serves to distinguish between short‐ (
ISSN:0148-0227
2156-2202
DOI:10.1029/2001JD000812