Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS

C. Geels, H. V. Andersen, C. A. Skjoth, J. H. Christensen, T. Ellermann, P. Lofstrom, S. Gyldenkaerne, J. Brandt, K. M. Hansen, L. M. Frohn, Ole Hertel

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

A local-scale Gaussian dispersion-deposition model (OML-DEP) has been coupled to a regional chemistry-transport model (DEHM with a resolution of approximately 6 km x 6 km over Denmark) in the Danish Ammonia Modelling System, DAMOS. Thereby, it has been possible to model the distribution of ammonia concentrations and depositions on a spatial resolution down to 400 m x 400 m for selected areas in Denmark. DAMOS has been validated against measured concentrations from the dense measuring network covering Denmark. Here measured data from 21 sites are included and the validation period covers 2-5 years within the period 2005-2009. A standard time series analysis (using statistic parameters like correlation and bias) shows that the coupled model system captures the measured time series better than the regional- scale model alone. However, our study also shows that about 50% of the modelled concentration level at a given location originates from non-local emission sources. The local-scale model covers a domain of 16 km x 16 km, and of the locally released ammonia (NH3) within this domain, our simulations at five sites show that 14-27% of the locally (within 16 km x 16 km) emitted NH3 also deposits locally. These results underline the importance of including both high-resolution local-scale modelling of NH3 as well as the regional-scale component described by the regional model. The DAMOS system can be used as a tool in environmental management in relation to assessments of total nitrogen load of sensitive nature areas in intense agricultural regions. However, high spatio-temporal resolution in input parameters like NH3 emissions and land-use data is required.
OriginalsprogEngelsk
TidsskriftBiogeosciences
Vol/bind33
Udgave nummer3
Sider (fra-til)292-294
ISSN1726-4170
DOI
StatusUdgivet - 2012

Citer dette

Geels, C., Andersen, H. V., Skjoth, C. A., Christensen, J. H., Ellermann, T., Lofstrom, P., ... Hertel, O. (2012). Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS. Biogeosciences, 33(3), 292-294. https://doi.org/10.5194/bg-9-2625-2012
Geels, C. ; Andersen, H. V. ; Skjoth, C. A. ; Christensen, J. H. ; Ellermann, T. ; Lofstrom, P. ; Gyldenkaerne, S. ; Brandt, J. ; Hansen, K. M. ; Frohn, L. M. ; Hertel, Ole. / Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS. I: Biogeosciences. 2012 ; Bind 33, Nr. 3. s. 292-294.
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title = "Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS",
abstract = "A local-scale Gaussian dispersion-deposition model (OML-DEP) has been coupled to a regional chemistry-transport model (DEHM with a resolution of approximately 6 km x 6 km over Denmark) in the Danish Ammonia Modelling System, DAMOS. Thereby, it has been possible to model the distribution of ammonia concentrations and depositions on a spatial resolution down to 400 m x 400 m for selected areas in Denmark. DAMOS has been validated against measured concentrations from the dense measuring network covering Denmark. Here measured data from 21 sites are included and the validation period covers 2-5 years within the period 2005-2009. A standard time series analysis (using statistic parameters like correlation and bias) shows that the coupled model system captures the measured time series better than the regional- scale model alone. However, our study also shows that about 50{\%} of the modelled concentration level at a given location originates from non-local emission sources. The local-scale model covers a domain of 16 km x 16 km, and of the locally released ammonia (NH3) within this domain, our simulations at five sites show that 14-27{\%} of the locally (within 16 km x 16 km) emitted NH3 also deposits locally. These results underline the importance of including both high-resolution local-scale modelling of NH3 as well as the regional-scale component described by the regional model. The DAMOS system can be used as a tool in environmental management in relation to assessments of total nitrogen load of sensitive nature areas in intense agricultural regions. However, high spatio-temporal resolution in input parameters like NH3 emissions and land-use data is required.",
author = "C. Geels and Andersen, {H. V.} and Skjoth, {C. A.} and Christensen, {J. H.} and T. Ellermann and P. Lofstrom and S. Gyldenkaerne and J. Brandt and Hansen, {K. M.} and Frohn, {L. M.} and Ole Hertel",
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Geels, C, Andersen, HV, Skjoth, CA, Christensen, JH, Ellermann, T, Lofstrom, P, Gyldenkaerne, S, Brandt, J, Hansen, KM, Frohn, LM & Hertel, O 2012, 'Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS', Biogeosciences, bind 33, nr. 3, s. 292-294. https://doi.org/10.5194/bg-9-2625-2012

Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS. / Geels, C.; Andersen, H. V.; Skjoth, C. A.; Christensen, J. H.; Ellermann, T.; Lofstrom, P.; Gyldenkaerne, S.; Brandt, J.; Hansen, K. M.; Frohn, L. M.; Hertel, Ole.

I: Biogeosciences, Bind 33, Nr. 3, 2012, s. 292-294.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS

AU - Geels, C.

AU - Andersen, H. V.

AU - Skjoth, C. A.

AU - Christensen, J. H.

AU - Ellermann, T.

AU - Lofstrom, P.

AU - Gyldenkaerne, S.

AU - Brandt, J.

AU - Hansen, K. M.

AU - Frohn, L. M.

AU - Hertel, Ole

PY - 2012

Y1 - 2012

N2 - A local-scale Gaussian dispersion-deposition model (OML-DEP) has been coupled to a regional chemistry-transport model (DEHM with a resolution of approximately 6 km x 6 km over Denmark) in the Danish Ammonia Modelling System, DAMOS. Thereby, it has been possible to model the distribution of ammonia concentrations and depositions on a spatial resolution down to 400 m x 400 m for selected areas in Denmark. DAMOS has been validated against measured concentrations from the dense measuring network covering Denmark. Here measured data from 21 sites are included and the validation period covers 2-5 years within the period 2005-2009. A standard time series analysis (using statistic parameters like correlation and bias) shows that the coupled model system captures the measured time series better than the regional- scale model alone. However, our study also shows that about 50% of the modelled concentration level at a given location originates from non-local emission sources. The local-scale model covers a domain of 16 km x 16 km, and of the locally released ammonia (NH3) within this domain, our simulations at five sites show that 14-27% of the locally (within 16 km x 16 km) emitted NH3 also deposits locally. These results underline the importance of including both high-resolution local-scale modelling of NH3 as well as the regional-scale component described by the regional model. The DAMOS system can be used as a tool in environmental management in relation to assessments of total nitrogen load of sensitive nature areas in intense agricultural regions. However, high spatio-temporal resolution in input parameters like NH3 emissions and land-use data is required.

AB - A local-scale Gaussian dispersion-deposition model (OML-DEP) has been coupled to a regional chemistry-transport model (DEHM with a resolution of approximately 6 km x 6 km over Denmark) in the Danish Ammonia Modelling System, DAMOS. Thereby, it has been possible to model the distribution of ammonia concentrations and depositions on a spatial resolution down to 400 m x 400 m for selected areas in Denmark. DAMOS has been validated against measured concentrations from the dense measuring network covering Denmark. Here measured data from 21 sites are included and the validation period covers 2-5 years within the period 2005-2009. A standard time series analysis (using statistic parameters like correlation and bias) shows that the coupled model system captures the measured time series better than the regional- scale model alone. However, our study also shows that about 50% of the modelled concentration level at a given location originates from non-local emission sources. The local-scale model covers a domain of 16 km x 16 km, and of the locally released ammonia (NH3) within this domain, our simulations at five sites show that 14-27% of the locally (within 16 km x 16 km) emitted NH3 also deposits locally. These results underline the importance of including both high-resolution local-scale modelling of NH3 as well as the regional-scale component described by the regional model. The DAMOS system can be used as a tool in environmental management in relation to assessments of total nitrogen load of sensitive nature areas in intense agricultural regions. However, high spatio-temporal resolution in input parameters like NH3 emissions and land-use data is required.

U2 - 10.5194/bg-9-2625-2012

DO - 10.5194/bg-9-2625-2012

M3 - Journal article

VL - 33

SP - 292

EP - 294

JO - Biogeosciences

JF - Biogeosciences

SN - 1726-4170

IS - 3

ER -

Geels C, Andersen HV, Skjoth CA, Christensen JH, Ellermann T, Lofstrom P et al. Improved modelling of atmospheric ammonia over Denmark using the coupled modelling system DAMOS. Biogeosciences. 2012;33(3):292-294. https://doi.org/10.5194/bg-9-2625-2012