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| Titel |
Ozone tropospheric and stratospheric trends (1995-2008) over Western Europe from ground-based FTIR network observations |
| VerfasserIn |
Corinne Vigouroux, Philippe Demoulin, Thomas Blumenstock, Matthias Schneider, Jon Klyft, Mathias Palm, Tom Gardiner |
| 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 |
250039082
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| Zusammenfassung |
| Five ground-based stations in Western Europe, from 79°N to 28°N, all part of the Network
for the Detection of Atmospheric Composition Change (NDACC), have joined their efforts to
homogenize and optimize the retrievals of ozone profiles from FTIR (Fourier transform
infrared) solar absorption spectra. Using the optimal estimation method, distinct vertical
information can be obtained in four layers: ground—-10 km, 10—-18 km, 18—-27 km, and
27—-42 km, in addition to total column amounts. A bootstrap resampling method has been
implemented to determine annual partial and total column trends1. Vigouroux et al. (2008)2
applied this method to the ozone data and discussed the trends of the total columns and
of the partial columns in the above four layers, over the period 1995-2004. Here,
we present and discuss an update of this analysis for the 1995-2008 period. We
obtain, among others, that at all the stations, the ozone total columns trends are non
significant while the trends in the upper stratospheric layer (27–42 km) are significantly
positive.
1 Gardiner, T., Forbes, A., Woods, P., De Mazière, M., Vigouroux, C., Mahieu, E., Demoulin, P.,
Velazco, V., Notholt, J., Blumenstock, T., Hase, F., Kramer, I., Sussmann, R., Stremme, W., Mellqvist,
J., Strandberg, A., Ellingsen, K., and Gauss, M.: Method for evaluating trends in greenhouse
gases from ground-based remote FTIR measurements over Europe, ACP, 8, 6719-6727,
2008.
2 Vigouroux, C., De Mazière, M., Demoulin, P., Servais, C., Hase, F., Blumenstock, T., Kramer, I.,
Schneider, M., Mellqvist, J., Strandberg, A., Velazco, V., Notholt, J., Sussmann, R., Stremme, W.,
Rockmann, A., Gardiner, T., Coleman, M., and Woods, P. : Evaluation of tropospheric and stratospheric
ozone trends over Western Europe from ground-based FTIR network observations, ACP, 8, 6865-6886,
2008. |
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