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| Titel |
Ozone pollution during heat wave periods over last 15 years in Central Europe |
| VerfasserIn |
J. Struzewska, J. W. Kaminski, M. Jefimow |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250065514
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| Zusammenfassung |
| Periods characterized with the high ozone concentrations are usually associated with very
high air temperature and antycyclonic conditions or meridional circulation. A 15-year
(1997 – 2011) maximum daily temperature records from GSOD NOAA archive was
analyzed for 20 stations in Central Europe. For each year the number of days with the
maximum temperature exceeding 25oC and 30oC was calculated. For years with a
positive anomaly of the number of the hot days the data were analyzed to identify
exact dates and the duration of such events. This allows classification of the high
temperature period as “heat waves” (periods with maximum temperature exceeding
30oC lasting at least 3 consecutive days) and hot weather periods (periods with
maximum temperature exceeding 25oC and high daily average temperature). These two
types of high temperature are usually associated with different air masses inflow –
subtropical from the south or transformed polar from westerly directions. This indicates
also the differences in contribution of transboundary transport of ozone and its
precursors.
For selected high temperature episodes the ozone pollution was assessed based on
AirBase (1997-2009) and national database (2010-2011). The analysis covered the 8-hour
running average and daily maximum concentration of ozone near the surface. Also, the
contribution to the SOMO35 index during selected episodes will be calculated as a diagnostic
for adverse health effects.
Since the two analyzed types of hot weather periods have different origin in terms of
synoptic scale situation, an attempt will be made to answer whether there are differences in
the intensity of ozone episodes during selected hot weather periods. The outcome from the
study will be useful for the interpretation of modelling results for air quality in future climate. |
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