An assessment of observed vertical flux divergence in long-term eddy-covariance measurements over two Midwestern forest ecosystems

Vertical divergence of CO 2 fluxes is observed over two Midwestern AmeriFlux forest sites. The differences in ensemble averaged hourly CO 2 fluxes measured at two heights above canopy are relatively small (0.2–0.5 μmol m −2 s −1), but they are the major contributors to differences (76–256 g C m −2 o...

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