Transport-based
inversions of atmospheric CO2 concentration measurements have been
used by several groups [e.g., Bousquet, et al.,
2000; Rödenbeck, et al., 2003; Baker, et al., 2005] to estimate monthly regional CO2
fluxes from the 1980s to the present.
When compared at the scale of broad latitude bands, the inter-annual
variability (IAV) of these results is broadly consistent. This agreement breaks down, however, when the
fluxes are partitioned regionally inside these latitude bands, or even into
global land/ocean totals. We show here that this disagreement can largely be
explained by random estimation errors and transport model errors affecting the
estimates.
Author: D.F. Baker, R. Law, and K.R. Gurney (dfb at ucar dot edu)
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