A two-step scheme for high-resolution regional atmospheric trace gas inversions based on independent models Max Planck Institute for Biogeochemistry, Postfach 100164, 07701 Jena, Germany
Received: 01 Sep 2008 – Published in Atmos. Chem. Phys. Discuss.: 19 Jan 2009 – Published: 29 Jul 2009Abstract. Mixing ratio measurements of atmospheric tracers like CO2
can be used to estimate regional surface-air tracer fluxes using inverse methods,
involving a numerical transport model.
Currently available transport models are either global but rather coarse,
or more accurate but only over a limited spatial and temporal domain.
To obtain higher-resolution flux estimates within a region of interest,
existing studies use zoomed or coupled models.
The two-step scheme developed here uses global and regional models sequentially
in separate inversion steps, coupled only via the data vector.
This provides a nested atmospheric inversion scheme without the necessity
of a direct coupled model implementation.
For example, the scheme allows an easy nesting of Lagrangian models
with their potential of very high resolution into global inversions
based on Eulerian models.
Citation: Rödenbeck, C., Gerbig, C., Trusilova, K., and Heimann, M.: A two-step scheme for high-resolution regional atmospheric trace gas inversions based on independent models, Atmos. Chem. Phys., 9, 5331-5342, doi:10.5194/acp-9-5331-2009, 2009.