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| Titel |
Linking of the DNDC ecological model and the WRF Numerical Weather Prediction System |
| VerfasserIn |
Balázs Grosz, László Horváth, András Zénó Gyöngyösi, Tamás Weidinger, Zoltán Nagy |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250053342
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| Zusammenfassung |
| The most accurate information about trace gas fluxes within the ecosystems and the atmosphere
has a key role in air quality research. The DNDC (Denitrification-Decomposition)
biogeochemical model has been applied for the evaluation of soil gas fluxes such as CH4,
CO2 and N2O at agriculture fields on a daily basis. Initial meteorological dataset for DNDC
has been provided by i.) climatological dataset on a ~10 x 10 km grid for Hungary; ii) by
local micro-meteorological measurements in the framework of the NitroEurope EU-VIIth
Intergrated Project at Bugacpuszta site above semi-natural grassland; and iii) by a mesoscale
meteorological model. In the last case, the DNDC has been coupled to the WRF (Weather
Research and Forecasting) mesoscale numerical weather prediction model. Based on
local measurements and forecast dataset for Bugacpuszta station the results of the
DNDC model are compared to plant and nitrogen budget measurements during the
vegetation period of 2010. The WRF meteorological model provides regional input
meteorological database for the regional scale DNDC model. Based on soil and land-use
surveys the DNDC model runs has been performed for different countryside of
Hungary. The dataset of background air pollution monitoring stations and the bi-weekly
soil N2O, CO2 and CH4 flux measurements at three different points of Hungary
was used for the validation of the model system. These measurements have been
performed by static manual chamber method followed by gas chromatography. The
main goal of the development of the coupled WRF-DNDC system is to provide
continuous model calculation of CH4, CO2 and N2O fluxes at each grid cell (10
km x 10 km) in regional scale on a daily basis. The results of i) previous model
calculations (climatological grid scale meteorological dataset + DNDC model), ii) the
validation of the coupled WRF-DNDC model system and iii) the block scheme of
the continuous model runs and the structure of the output database are presented. |
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