HR: 10:55h
AN: B22A-03 [Abstracts]
TI: Regional CO$_2$ Flux Estimates for North America from Atmospheric Transport Inversions
AU: * Peters, W
EM: Wouter.Peters@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Bruhwiler, L
EM: Lori.Bruhwiler@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Miller, J B
EM: John.B.Miller@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Andrews, A
EM: Arlyn.Andrews@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Hirsch, A
EM: Adam.Hirsch@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Schaefer, K
EM: Kevin.Schaefer@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Tans, P
EM: Pieter.Tans@noaa.gov
AF: NOAA Climate Monitoring & Diagnostics Laboratory, 325 Broadway, Boulder, CO 80305
United States
AU: Michalak, A M
EM: Anna.Michalak@umich.edu
AF: University of Michigan, Department of Civil and Environmental Engineering, 119 EWRE Building, Ann
Arbor, MI 48109
United States
AU: Krol, M
EM: Maarten.Krol@jrc.it
AF: Joint Research Center, Via Enrico Fermi 1
TP 280, Ispra, 21020
Italy
AB:
We combine the global atmospheric transport model TM5 with observations from the NOAA-CMDL cooperative air sampling network
to estimate CO$_2$ fluxes from North America on an 80$\times$80 km grid. We produce weekly, global CO$_2$ flux maps that are
optimally consistent with CO$_2$ observations at more than 70 sites worldwide by adjusting surface fluxes in a Bayesian
inversion framework.ÿ This includes many new aircraft profiles over the United States associated with the North American
Carbon Program. The two-way nesting capability of TM5 allows us to study the North American carbon flux on a fine scale while
constraints from remote observations are provided by a coarser (600$\times$400 km) grid within the TM5 model. Further
constraints on the North American CO$_2$ flux are introduced into our inversion as spatial and temporal correlations between
regions with similar land cover. Continuous CO$_2$ measurements from tall towers in the US provide an independent check on
the estimated regional CO$_2$ fluxes. We will present our North American flux estimates, their uncertainty, and their
agreement with independent information focussing on the period 2000-2004.
DE: 9350 North America
DE: 3337 Numerical modeling and data assimilation
DE: 1610 Atmosphere (0315, 0325)
DE: 0322 Constituent sources and sinks
SC: Biogeosciences [B]
MN: 2004 AGU Fall Meeting