Emission optimisations first attempt based on Ensemble of DA for atmospheric composition
Title | Emission optimisations first attempt based on Ensemble of DA for atmospheric composition
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Technical memorandum
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Date Published |
06/2019
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Secondary Title |
ECMWF Technical Memoranda
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Number |
848
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Author | |
Publisher |
ECMWF
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Abstract |
The main motivation of running ECMWF analyses using the IFS Ensemble of Data Assimilation (EDA) is to provide the best possible initial conditions for forecast initialisation. Atmospheric composition is as much a boundary condition problem as an initial condition problem, hence there is a need to infer surface fluxes in addition to the 3D representation of atmospheric variables. A first attempt to use the ECMWF’s IFS Ensemble of Data Assimilation (EDA) information to constrain the Copernicus Atmosphere Monitoring Service (CAMS) surface emissions is presented. With a focus on carbon monoxide, the methodology presented here aims to use the ensemble information and its flow dependency to derive a space and time varying relationship between assimilation increments on the atmospheric composition fields and surface emissions. |
URL | https://www.ecmwf.int/en/elibrary/81079-emission-optimisations-first-attempt-based-ensemble-da-atmospheric-composition |
DOI |
10.21957/4grkg5ga0
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