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| Titel |
Evaluation of near-surface ozone over Europe from the MACC reanalysis |
| VerfasserIn |
E. Katragkou, P. Zanis, A. Tsikerdekis, J. Kapsomenakis, D. Melas, H. Eskes, J. Flemming, V. Huijnen, A. Inness, M. G. Schultz, O. Stein, C. S. Zerefos |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 7 ; Nr. 8, no. 7 (2015-07-30), S.2299-2314 |
| Datensatznummer |
250116466
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| Publikation (Nr.) |
 copernicus.org/gmd-8-2299-2015.pdf |
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| Zusammenfassung |
| This work is an extended evaluation of near-surface ozone as part of the
global reanalysis of atmospheric composition, produced within the
European-funded project MACC (Monitoring Atmospheric Composition and
Climate). It includes an evaluation over the period 2003–2012 and provides
an overall assessment of the modeling system performance with respect to
near-surface ozone for specific European subregions. Measurements at rural
locations from the European Monitoring and Evaluation Program (EMEP) and the
European Air Quality Database (AirBase) were used for the evaluation
assessment. The fractional gross error of near-surface ozone reanalysis is on
average 24 % over Europe, the highest found over Scandinavia (27 %)
and the lowest over the Mediterranean marine stations (21 %).
Near-surface ozone shows mostly a negative bias in winter and a positive bias
during warm months. Assimilation reduces the bias in near-surface ozone in
most of the European subregions – with the exception of Britain and Ireland
and the Iberian Peninsula and its impact is mostly notable in winter. With
respect to the seasonal cycle, the MACC reanalysis reproduces the
photochemically driven broad spring-summer maximum of surface ozone of
central and south Europe. However, it does not capture adequately the early
spring peak and the shape of the seasonality at northern and north-eastern
Europe. The diurnal range of surface ozone, which is as an indication of the
local photochemical production processes, is reproduced fairly well, with a
tendency for a small overestimation during the warm months for most
subregions (especially in central and southern Europe). Possible reasons
leading to discrepancies between the MACC reanalysis and observations are
discussed. |
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