Mesoscale inversion: first results from the CERES campaign with synthetic data
Open Access
- 31 December 2007
- journal article
- research article
- Published by Copernicus GmbH in Atmospheric Chemistry and Physics
- Vol. 8 (13), 3459-3471
- https://doi.org/10.5194/acp-8-3459-2008
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 Strateg (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 Mseo-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 x 300 km 2 domain. Most of this reduclion 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.Keywords
This publication has 36 references indexed in Scilit:
- Atmospheric CO2 modeling at the regional scale: an intercomparison of 5 meso-scale atmospheric modelsPublished by Copernicus GmbH ,2007
- Global and regional drivers of accelerating CO 2 emissionsProceedings of the National Academy of Sciences of the United States of America, 2007
- Mesoscale circulations over complex terrain in the Valencia coastal region, Spain – Part 2: Modeling CO2 transport using idealized surface fluxesAtmospheric Chemistry and Physics, 2007
- Daily CO2 flux estimates over Europe from continuous atmospheric measurements: 1, inverse methodologyAtmospheric Chemistry and Physics, 2005
- A dynamic global vegetation model for studies of the coupled atmosphere‐biosphere systemGlobal Biogeochemical Cycles, 2005
- Toward constraining regional‐scale fluxes of CO2 with atmospheric observations over a continent: 2. Analysis of COBRA data using a receptor‐oriented frameworkJournal of Geophysical Research: Solid Earth, 2003
- Toward constraining regional‐scale fluxes of CO2 with atmospheric observations over a continent: 1. Observed spatial variability from airborne platformsJournal of Geophysical Research: Atmospheres, 2003
- Time-dependent atmospheric CO2 inversions based on interannually varying tracer transportTellus B: Chemical and Physical Meteorology, 2003
- The utility of remotely sensed CO2 concentration data in surface source inversionsGeophysical Research Letters, 2001
- Optimal sampling of the atmosphere for purpose of inverse modeling: A model studyGlobal Biogeochemical Cycles, 2000