Direct variational data assimilation algorithm for atmospheric chemistry data with transport and transformation model

Alexey Penenko; Vladimir Penenko; Roman Nuterman; Alexander Baklanov; Alexander Mahura

doi:10.1117/12.2206008

19 November 2015 Direct variational data assimilation algorithm for atmospheric chemistry data with transport and transformation model

Alexey Penenko, Vladimir Penenko, Roman Nuterman, Alexander Baklanov, Alexander Mahura

Author Affiliations +

Proceedings Volume 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics; 968076 (2015) https://doi.org/10.1117/12.2206008
Event: XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, 2015, Tomsk, Russian Federation

Abstract

Atmospheric chemistry dynamics is studied with convection-diffusion-reaction model. The numerical Data Assimilation algorithm presented is based on the additive-averaged splitting schemes. It carries out ''fine-grained'' variational data assimilation on the separate splitting stages with respect to spatial dimensions and processes i.e. the same measurement data is assimilated to different parts of the split model. This design has efficient implementation due to the direct data assimilation algorithms of the transport process along coordinate lines. Results of numerical experiments with chemical data assimilation algorithm of in situ concentration measurements on real data scenario have been presented. In order to construct the scenario, meteorological data has been taken from EnviroHIRLAM model output, initial conditions from MOZART model output and measurements from Airbase database.

Citation Download Citation

Alexey Penenko, Vladimir Penenko, Roman Nuterman, Alexander Baklanov, and Alexander Mahura "Direct variational data assimilation algorithm for atmospheric chemistry data with transport and transformation model", Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968076 (19 November 2015); https://doi.org/10.1117/12.2206008

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