An approach for verifying biogenic greenhouse gas emissions inventories with atmospheric CO 2 concentration data

作者：Stephen M. Ogle, K. J. Davis, Thomas Lauvaux, A. E. Schuh, Daniel Cooley, Tristram O. West, Linda S. Heath, N. L. Miles, Scott J. Richardson, F. Jay Breidt, James E. Smith, J. L. McCarty, K. R. Gurney, Pieter P. Tans, Scott Denning · 发表于：Environmental Research Letters · 年份：2015 · DOI：10.1088/1748-9326/10/3/034012 · 被引用次数：42 · 研究领域：Atmospheric and Environmental Gas Dynamics、Atmospheric chemistry and aerosols、Fire effects on ecosystems

Verifying national greenhouse gas (GHG) emissions inventories is a critical step to ensure that reported emissions data to the United Nations Framework Convention on Climate Change (UNFCCC) are accurate and representative of a country's contribution to GHG concentrations in the atmosphere. Furthermore, verifying biogenic fluxes provides a check on estimated emissions associated with managing lands for carbon sequestration and other activities, which often have large uncertainties. We report here on the challenges and results associated with a case study using atmospheric measurements of CO 2 concentrations and inverse modeling to verify nationally-reported biogenic CO 2 emissions. The biogenic CO 2 emissions inventory was compiled for the Mid-Continent region of United States based on methods and data used by the US government for reporting to the UNFCCC, along with additional sources and sinks to produce a full carbon balance. The biogenic emissions inventory produced an estimated flux of −408 ± 136 Tg CO 2 for the entire study region, which was not statistically different from the biogenic flux of −478 ± 146 Tg CO 2 that was estimated using the atmospheric CO 2 concentration data. At sub-regional scales, the spatial density of atmospheric observations did not appear sufficient to verify emissions in general. However, a difference between the inventory and inversion results was found in one isolated area of West-central Wisconsin. This part of the region is dominated by fore...