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| Titel |
Monitoring the stratosphere in GEOmon and NDACC. |
| VerfasserIn |
M. De Mazière, H. K. Roscoe, J. C. Lambert, P. Keckhut, C. Textor |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250028610
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| Zusammenfassung |
| It is indispensable to monitor the atmospheric composition and its variability and trends, in
order to identify and understand its long-term changes and evaluate the possible impacts on
our environmental conditions. This monitoring of the Earth atmosphere on a global scale is
the major objective of the European project GEOmon (http://www.geomon.eu). GEOmon
includes a study of Stratospheric Ozone and Climate, including 64 ground-based instruments
at 32 stations world-wide that make regular observations of stratospheric ozone, nitrogen
dioxide, bromine oxide, halogenated reservoir species, water vapour, temperature, aerosol
and polar stratospheric clouds. The resulting preliminary data are submitted rapidly to the
GEOmon data center where they are publicly accessible. Most of the instruments are
contributing to NDACC and have historical time series in the NDACC archive. Hence
quality-controlled data are mostly archived at the NDACC Data Handling Facility
(ftp://ftp.cpc.ncep.noaa.gov/ndacc/)
Some time series are also being revised to improve the homogeneity of the
network, and to enable long-term trend studies and synergistic use with satellite data.
The latter aspect requires a good characterisation of the information content of
the ground-based and satellite data, work that is also ongoing in this GEOmon
activity.
This presentation will give an overview of the data set and highlight some recent results
concerning long-term time series and trends, and their implications for stratospheric ozone
recovery and the connections with climate parameters like the Brewer Dobson circulation. |
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