Other Scholarly Content

 

Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions, and a new approach for estimating net ecosystem exchange from inventory-based data Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/2j62s5312

The publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Descriptions

Attribute NameValues
Creator
Abstract
  • We develop an approach for estimating net ecosystem exchange (NEE) using inventory-based information over North America (NA) for a recent 7-year period (ca. 2000–2006). The approach notably retains information on the spatial distribution of NEE, or the vertical exchange between land and atmosphere of all non-fossil fuel sources and sinks of CO₂, while accounting for lateral transfers of forest and crop products as well as their eventual emissions. The total NEE estimate of a −327 ± 252 TgC yr⁻¹ sink for NA was driven primarily by CO₂ uptake in the Forest Lands sector (−248 TgC yr⁻¹), largely in the Northwest and Southeast regions of the US, and in the Crop Lands sector (−297 TgC yr⁻¹), predominantly in the Midwest US states. These sinks are counteracted by the carbon source estimated for the Other Lands sector (+218 TgC yr⁻¹), where much of the forest and crop products are assumed to be returned to the atmosphere (through livestock and human consumption). The ecosystems of Mexico are estimated to be a small net source (+18 TgC yr⁻¹) due to land use change between 1993 and 2002. We compare these inventory-based estimates with results from a suite of terrestrial biosphere and atmospheric inversion models, where the mean continental-scale NEE estimate for each ensemble is −511 TgC yr⁻¹ and −931 TgC yr⁻¹, respectively. In the modeling approaches, all sectors, including Other Lands, were generally estimated to be a carbon sink, driven in part by assumed CO₂ fertilization and/or lack of consideration of carbon sources from disturbances and product emissions. Additional fluxes not measured by the inventories, although highly uncertain, could add an additional −239 TgC yr⁻¹ to the inventory-based NA sink estimate, thus suggesting some convergence with the modeling approaches.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Hayes, D. J., Turner, D. P., Stinson, G., McGuire, A. D., Wei, Y., West, T. O., Heath, L. S., de Jong, B., McConkey, B. G., Birdsey, R. A., Kurz, W. A., Jacobson, A. R., Huntzinger, D. N., Pan, Y., Post, W. M. and Cook, R. B. (2012), Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions, and a new approach for estimating net ecosystem exchange from inventory-based data. Global Change Biology, 18: 1282–1299. doi: 10.1111/j.1365-2486.2011.02627.x
Academic Affiliation
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
  • Research was conducted in part at Oak Ridge National Laboratory, and supported by the US Department of Energy (DOE), Office of Science, Biological and Environmental Research. Oak Ridge National Laboratory is managed by UT-Battelle for DOE under contract DE-AC05-00OR22725. The research reported in this paper was supported by multiple sources, including USDA CSREES grant 2008-35615-18959, NASA New Investigator Program grant NNX10AT66G and NASA Terrestrial Ecology Program grant NNX09AL51G. This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy.
Publisher
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Deanne Bruner(deanne.bruner@oregonstate.edu) on 2012-05-10T17:51:13Z (GMT) No. of bitstreams: 1 TurnerDavidForestryReconcilingEstimatesContemporary.pdf: 697997 bytes, checksum: 6984b5b273aa0c56877d4493a76667d2 (MD5)
  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2012-04-23T20:08:49Z No. of bitstreams: 1 TurnerDavidForestryReconcilingEstimatesContemporary.pdf: 697997 bytes, checksum: 6984b5b273aa0c56877d4493a76667d2 (MD5)
  • description.provenance : Made available in DSpace on 2012-05-10T17:51:13Z (GMT). No. of bitstreams: 1 TurnerDavidForestryReconcilingEstimatesContemporary.pdf: 697997 bytes, checksum: 6984b5b273aa0c56877d4493a76667d2 (MD5) Previous issue date: 2012-04

Relationships

Parents:

This work has no parents.

Items