Four-Dimensional Variational Assimilation of Atmospheric Chemical Data - Application to Regional Modelling of Air Quality

摘要

The chemistry transport model system EURAD-IM and its variational data assimilation implementation are applied to air quality assessment problems. The facility of joint initial value and emission rate optimisation together with a nested 4d-var module is employed to the measurement campaign BERLIOZ. To emphasise the benefits of computationally efficient data assimilation for monitoring and simulating air quality, results of an operational 3d-var implementation are also given.