Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year 5.689
  • CiteScore value: 5.44 CiteScore 5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H index value: 161 Scimago H index 161
Volume 8, issue 13
Atmos. Chem. Phys., 8, 3459-3471, 2008
https://doi.org/10.5194/acp-8-3459-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 8, 3459-3471, 2008
https://doi.org/10.5194/acp-8-3459-2008
© Author(s) 2008. This work is distributed under
the Creative Commons Attribution 3.0 License.

  02 Jul 2008

02 Jul 2008

Mesoscale inversion: first results from the CERES campaign with synthetic data

T. Lauvaux1,2, M. Uliasz3, C. Sarrat2, F. Chevallier1, P. Bousquet1, C. Lac2, K. J. Davis4, P. Ciais1, A. S. Denning3, and P. J. Rayner1 T. Lauvaux et al.
  • 1Laboratoire des Sciences du Climat et de l'Environnement/IPSL,CEA-CNRS-UVSQ, Gif-sur-Yvette, France
  • 2Centre Nationale des recherches Météorologiques, Toulouse, France
  • 3Department of Atmospheric Sciences, Colorado State University, Fort Collins, Colorado, USA
  • 4Department of Meteorology, The Pennsylvania State University, University Park, Pennsylvania, USA

Abstract. We investigate the ability of a mesoscale model to reconstruct CO2 fluxes at regional scale. Formally, we estimate the reduction of error for a CO2 flux inversion at 8 km resolution in the South West of France, during four days of the CarboEurope Regional Experiment Strategy (CERES) in spring 2005. Measurements from two towers and two airplanes are available for this campaign. The lagrangian particle dispersion model LPDM was coupled to the non-hydrostatic model Meso-NH and integrated in a matrix inversion framework. Impacts of aircraft and tower measurements are quantified separately and together. We find that the configuration with both towers and aircraft is able to significantly reduce uncertainties on the 4-day averaged CO2 fluxes over about half of the 300×300 km2 domain. Most of this reduction comes from the tower measurements, even though the impact of aircraft measurements remains noticeable. Imperfect knowledge of boundary conditions does not significantly impact the error reduction for surface fluxes. We test alternative strategies to improve the impact of aircraft measurements and find that most information comes from measurements inside the boundary layer. We find that there would be a large improvement in error reduction if we could improve our ability to model nocturnal concentrations at tower sites.

Publications Copernicus
Download
Citation
Share