% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Inness:275998,
      author       = {Inness, A. and Blechschmidt, A.-M. and Bouarar, I. and
                      Chabrillat, S. and Crepulja, M. and Engelen, R. J. and
                      Eskes, H. and Flemming, J. and Gaudel, A. and Hendrick, F.
                      and Huijnen, V. and Jones, L. and Kapsomenakis, J. and
                      Katragkou, E. and Keppens, A. and Langerock, B. and de
                      Mazière, M. and Melas, D. and Parrington, M. and Peuch, V.
                      H. and Razinger, M. and Richter, A. and Schultz, Martin and
                      Suttie, M. and Thouret, V. and Vrekoussis, M. and Wagner, A.
                      and Zerefos, C.},
      title        = {{D}ata assimilation of satellite retrieved ozone, carbon
                      monoxide and nitrogen dioxide with {ECMWF}'s
                      {C}omposition-{IFS}},
      journal      = {Atmospheric chemistry and physics / Discussions},
      volume       = {15},
      number       = {4},
      issn         = {1680-7375},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2015-06496},
      pages        = {4265 - 4331},
      year         = {2015},
      abstract     = {Daily global analyses and 5 day forecasts are generated in
                      the context of the European Monitoring Atmospheric
                      Composition and Climate (MACC) project using an extended
                      version of the Integrated Forecasting System (IFS) of the
                      European Centre for Medium-Range Weather Forecasts (ECMWF).
                      IFS now includes modules for chemistry, deposition and
                      emission of reactive gases, aerosols, and greenhouse gases,
                      and the 4-dimensional variational data assimilation scheme
                      makes use of multiple satellite observations of atmospheric
                      composition in addition to meteorological observations. This
                      paper describes the data assimilation setup of the new
                      Composition-IFS (C-IFS) with respect to reactive gases and
                      validates analysis fields of ozone (O3), carbon monoxide
                      (CO), and nitrogen dioxide (NO2) for the year 2008 against
                      independent observations and a control run without data
                      assimilation. The largest improvement in CO by assimilation
                      of MOPITT CO columns is seen in the lower troposphere of the
                      Northern Hemisphere (NH) Extratropics during winter, and
                      during the South African biomass burning season. The
                      assimilation of several O3 total column and stratospheric
                      profile retrievals greatly improves the total column,
                      stratospheric and upper tropospheric O3 analysis fields
                      relative to the control run. The impact on lower
                      tropospheric ozone, which comes from the residual of the
                      total column and stratospheric profile O3 data, is smaller,
                      but nevertheless there is some improvement particularly in
                      the NH during winter and spring. The impact of the
                      assimilation of OMI tropospheric NO2 columns is small
                      because of the short lifetime of NO2, suggesting that NO2
                      observations would be better used to adjust emissions
                      instead of initial conditions. The results further indicate
                      that the quality of the tropospheric analyses and of the
                      stratospheric ozone analysis obtained with the C-IFS system
                      has improved compared to the previous "coupled" model system
                      of MACC.},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243) / MACC-III - Monitoring
                      Atmospheric Composition and Climate -III (633080) / MACC II
                      - Monitoring Atmospheric Composition and Climate Interim
                      Implementation (283576)},
      pid          = {G:(DE-HGF)POF3-243 / G:(EU-Grant)633080 /
                      G:(EU-Grant)283576},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.5194/acpd-15-4265-2015},
      url          = {https://juser.fz-juelich.de/record/275998},
}