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| Titel |
Observations of Chemical and Dynamical Processes in the Polar Stratosphere by the Odin Satellite: the 2009-2010 Northern Hemisphere Winter Compared to Earlier Years |
| VerfasserIn |
Jo Urban, Donal Murtagh, Samuel Brohede, Stefan Lossow, Maryam Khosravi, Yvan Orsolini |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250040338
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| Zusammenfassung |
| The Odin satellite provides global profile measurements of key constituents relevant to
stratospheric chemistry and dynamics such as ozone (O3), nitrous oxide (N2O), chlorine
monoxide (ClO), nitric acid (HNO3), nitrogen dioxide (NO2), and water vapour (H2O) on a
regular bases since 2001.
Scientific results are presented with focus on measurements taken at high northern
latitudes in the polar winter stratosphere of the winter 2009-2010. The Odin/SMR
measurements of nitrous oxide, water vapour, chlorine monoxide, nitric acid, and ozone allow
for example to study the chemical and dynamical evolution and variability of the Arctic
vortex during winter and spring by providing information on chlorine activation,
de-nitrification, subsidence of vortex air, and on ozone loss.
Results for the northern hemisphere 2009-2010 winter will be put in relationship to
(climatological) results for the longer Odin measurement period from 2001 to 2010,
providing information on the inter-annual chemical and dynamical variability. The Arctic
winter stratosphere is characterised by "cold" winters with relatively well confined vortices
and considerable chlorine activation and chemical ozone loss (e.g. 2002-2003, 2004-2005,
2006-2007) as well as by "warm" winters with high variability of transport and exchange of
air during and after mid-winter major stratospheric warming events, between high and low
latitudes as well as between stratosphere and mesosphere (e.g. 2003-2004, 2005-2006,
2008-2009).
Odin is a Swedish-led satellite project funded jointly by Sweden (SNSB), Canada (CSA),
Finland (TEKES), France (CNES), and the European Space Agency (ESA). |
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