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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 8
Geosci. Model Dev., 10, 2971-2999, 2017
https://doi.org/10.5194/gmd-10-2971-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Coupled chemistry–meteorology modelling: status and...

Geosci. Model Dev., 10, 2971-2999, 2017
https://doi.org/10.5194/gmd-10-2971-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Model description paper 08 Aug 2017

Model description paper | 08 Aug 2017

Enviro-HIRLAM online integrated meteorology–chemistry modelling system: strategy, methodology, developments and applications (v7.2)

Alexander Baklanov1,a, Ulrik Smith Korsholm1, Roman Nuterman2, Alexander Mahura1,b, Kristian Pagh Nielsen1, Bent Hansen Sass1, Alix Rasmussen1, Ashraf Zakey1,c, Eigil Kaas2, Alexander Kurganskiy2,3, Brian Sørensen2, and Iratxe González-Aparicio4 Alexander Baklanov et al.
  • 1Danish Meteorological Institute (DMI), Copenhagen, Denmark
  • 2Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
  • 3Russian State Hydrometeorological University, St. Petersburg, Russia
  • 4European Commission, DG – Joint Research Centre, Institute for Energy and Transport, Petten, the Netherlands
  • anow at: World Meteorological Organization (WMO), Geneva, Switzerland
  • bnow at: University of Helsinki, Helsinki, Finland
  • cnow at: The Egyptian Meteorological Authority, Cairo, Egypt

Abstract. The Environment – High Resolution Limited Area Model (Enviro-HIRLAM) is developed as a fully online integrated numerical weather prediction (NWP) and atmospheric chemical transport (ACT) model for research and forecasting of joint meteorological, chemical and biological weather. The integrated modelling system is developed by the Danish Meteorological Institute (DMI) in collaboration with several European universities. It is the baseline system in the HIRLAM Chemical Branch and used in several countries and different applications. The development was initiated at DMI more than 15 years ago. The model is based on the HIRLAM NWP model with online integrated pollutant transport and dispersion, chemistry, aerosol dynamics, deposition and atmospheric composition feedbacks. To make the model suitable for chemical weather forecasting in urban areas, the meteorological part was improved by implementation of urban parameterisations. The dynamical core was improved by implementing a locally mass-conserving semi-Lagrangian numerical advection scheme, which improves forecast accuracy and model performance. The current version (7.2), in comparison with previous versions, has a more advanced and cost-efficient chemistry, aerosol multi-compound approach, aerosol feedbacks (direct and semi-direct) on radiation and (first and second indirect effects) on cloud microphysics. Since 2004, the Enviro-HIRLAM has been used for different studies, including operational pollen forecasting for Denmark since 2009 and operational forecasting atmospheric composition with downscaling for China since 2017. Following the main research and development strategy, further model developments will be extended towards the new NWP platform – HARMONIE. Different aspects of online coupling methodology, research strategy and possible applications of the modelling system, and fit-for-purpose model configurations for the meteorological and air quality communities are discussed.

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The Environment – HIgh Resolution Limited Area Model (Enviro-HIRLAM) is developed as a fully online integrated numerical weather prediction and atmospheric chemical transport model for research and forecasting of joint meteorological, chemical and biological weather. Different aspects of online coupling methodology, research strategy and possible applications of the modelling system, and ''fit-for-purpose'' model configurations for the meteorological and air quality communities are discussed.
The Environment – HIgh Resolution Limited Area Model (Enviro-HIRLAM) is developed as a fully...
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