 |
| Titel |
The 2009 stratospheric major warming described from synergistic use of BASCOE water vapour analyses and MLS observations |
| VerfasserIn |
W. A. Lahoz, Q. Errera, S. Viscardy, G. L. Manney |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 10 ; Nr. 11, no. 10 (2011-05-20), S.4689-4703 |
| Datensatznummer |
250009749
|
| Publikation (Nr.) |
 copernicus.org/acp-11-4689-2011.pdf |
|
|
|
|
|
| Zusammenfassung |
| The record-breaking major stratospheric warming of northern winter 2009
(January–February) is studied using BASCOE (Belgian Assimilation System for
Chemical ObsErvation) stratospheric water vapour analyses and MLS (Microwave
Limb Sounder) water vapour observations, together with meteorological data
from the European Centre for Medium-Range Weather Forecasts (ECMWF) and
potential vorticity (PV) derived from ECMWF meteorological data. We focus on
the interaction between the cyclonic wintertime stratospheric polar vortex
and subsidiary anticyclonic stratospheric circulations during the build-up,
peak and aftermath of the major warming. We show dynamical consistency
between the water vapour analysed fields and the meteorological and PV
fields. Using various approaches, we use the analysed water vapour fields to
estimate descent in the polar vortex during this period of between
~0.5 km day−1 and ~0.7 km day−1. New results include the
analysis of water vapour during the major warming and demonstration of the
benefit of assimilating MLS satellite data into the BASCOE model. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|