Examination of national statistical databases has
allowed for the widely-used data set on annual, fossil-fuel-derived, carbon
dioxide emissions (maintained by the Carbon Dioxide Information Analysis Center
(CDIAC)) to be subdivided into monthly time intervals. This analysis focused on
statistical parameters that represent the solid, liquid, and gaseous fuels
consumed in each country at monthly time scales. An intermediate product of
this analysis was the fraction of the annual total consumption occurring in
each month for each fuel. Monthly fractions were multiplied by the annual carbon
dioxide emission value to obtain monthly emission estimates. A benefit of this
approach is monthly and annual emissions time series that are mutually
consistent. This presentation will give
monthly emissions for multiple years for the United
States, Canada,
and Mexico.
All data have been updated since the Fall 2004 AGU
presentation of this work. The monthly data by state and province provide
enough detail to begin to describe how the annual cycle of emissions varies
spatially (i.e., whether emissions peak in the summer, in the winter, or are
relatively uniform throughout the year).
Author: R.J. Andres, J.S. Gregg, L.M. Losey, and G. Marland (andres at space dot edu)
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