A new global gridded data set of CO2 emissions from fossil fuel combustion: methodology and evaluation
Citations
Altmetric
Author
Rayner, P. J.; Raupach, M. R.; Paget, M.; Peylin, P.; Koffi, E.Date
2010Source Title
Journal of Geophysical Research: AtmospheresPublisher
American Geophysical UnionUniversity of Melbourne Author/s
Rayner, PeterAffiliation
Science - Earth SciencesMetadata
Show full item recordDocument Type
Journal ArticleCitations
Rayner, P. J., Raupach, M. R., Paget, M., Peylin, P. & Koffi, E. (2010). A new global gridded data set of CO2 emissions from fossil fuel combustion: methodology and evaluation. Journal of Geophysical Research: Atmospheres, 115, doi:10.1029/2009JD013439.Access Status
Open AccessDescription
© 2010 American Geophysical Union
Abstract
We describe a system for constraining the spatial distribution of fossil fuel emissions of CO2. The system is based on a modified Kaya identity which expresses emissions as a product of areal population density, per capita economic activity, energy intensity of the economy, and carbon intensity of energy. We apply the methodology of data assimilation to constrain such a model with various observations, notably, the statistics of national emissions and data on the distribution of nightlights and population. We hence produce a global, annual emission field at 0.25° resolution. Our distribution of emissions is smoother than that of the population downscaling traditionally used to describe emissions. Comparison with the Vulcan inventory suggests that the assimilated product performs better than downscaling for distributions of either population or nightlights alone for describing the spatial structure of emissions over the United States. We describe the complex structure of uncertainty that arises from combining pointwise and area-integrated constraints. Uncertainties can be as high as 50% at the pixel level and are not spatially independent. We describe the use of 14CO2 measurements to further constrain national emissions. Their value is greatest over large countries with heterogeneous emissions. Generated fields may be found online (http://ffdas.org/).
Keywords
carbon cycle; atmospheric CO2Export Reference in RIS Format
Endnote
- Click on "Export Reference in RIS Format" and choose "open with... Endnote".
Refworks
- Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References