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Research
Chemistry and Climate
Global chemistry modeling
This research area aims at the understanding of changes in the chemical composition of the atmosphere
in terms of changes in anthropogenic and natural emissions,
transport patterns and meteorological conditions.
The focus is on reactive gases such as methane, ozone and related trace gases, and on aerosols.
The main tool for this work is the global chemistry transport model
TM5.
The Chemistry and Climate division contributes to the development and evaluation of TM5,
in particular the tropospheric chemistry version of the model.
Based on meteorological reanalyses and operational forecasts
from the European Centre for Medium-Range Weather Forecasts (ECMWF), the division makes
hindcasts and short-term forecasts of reactive gases and aerosols.
Another line of activity is the integration of chemistry in ECMWF's Integrated Forecasting System
(IFS).
In recent years the European Centre and partner institutes
have set up a chemical assimilation system for making reanalyses and short-term forecasts of the global atmospheric composition.
The Chemistry and Climate division has contributed to the development of an online coupling between IFS and TM5 in this system,
based on the OASIS4 coupler.
Daily analyses and 4-day forecasts of global 3-dimensional ozone and carbon monoxide based on this system are provided
as a service of GMES (click
here).
Currently the division contributes to the development of the so-called Composition-IFS (C-IFS) model, in which chemistry is integrated into IFS. The current version of C-IFS includes chemistry modules based on TM5.
Related projects:
Persons involved:
For more information, please contact
Michiel van Weele
Tropospheric nitrogen dioxide (NO2) columns for August 2008 as simulated by TM5 with zoom over Europe (top panel) and as measured by the Ozone Monitoring Instrument (bottom panel). The unit is 1015 molecules/cm2.
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Nitrogen oxide distribution simulated with the TM model
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