Improving the temporal and spatial distribution of CO2 emissions from global fossil fuel emission data sets
Tóm tắt
Through an analysis of multiple global fossil fuel CO2 emission data sets, Vulcan emission data for the United States, Canada's National Inventory Report, and NO2 variability based on satellite observations, we derive scale factors that can be applied to global emission data sets to represent weekly and diurnal CO2 emission variability. This is important for inverse modeling and data assimilation of CO2, which use in situ or satellite measurements subject to variability on these time scales. Model simulations applying the weekly and diurnal scaling show that, although the impacts are minor far away from sources, surface atmospheric CO2 is perturbed by up to 1.5−8 ppm and column‐averaged CO2 is perturbed by 0.1−0.5 ppm over some major cities, suggesting the magnitude of model biases for urban areas when these modes of temporal variability are not represented. In addition, we also derive scale factors to account for the large per capita differences in CO2 emissions between Canadian provinces that arise from differences in per capita energy use and the proportion of energy generated by methods that do not emit CO2, which are not accounted for in population‐based global emission data sets. The resulting products of these analyses are global 0.25° × 0.25° gridded scale factor maps that can be applied to global fossil fuel CO2 emission data sets to represent weekly and diurnal variability and 1° × 1° scale factor maps to redistribute spatially emissions from two common global data sets to account for differences in per capita emissions within Canada.
Từ khóa
Tài liệu tham khảo
Gavison R., 2007, Constituting Religion: Law, Society and Faith in the 21st Century
Gurney K. R., 2005, Sensitivity of atmospheric CO2 inversions to seasonal and interannual variations in fossil fuel emissions, J. Geophys. Res., 10
National Inventory Report 1990−2009: Greenhouse Gas Sources and Sinks in Canada(2011) ISSN:1706‐3353 Cat. No.: En81‐4/2009E‐PDF.
Pacala S., 2010, Verifying greenhouse gas emissions: methods to support international climate agreements
Pregger T. Y.Scholz andR.Friedrich(2007) Documentation of the anthropogenic GHG emission data for Europe provided in the frame of CarboEurope GHG and CarboEurope IP Institute of Energy Economics and the Rational Use of Energy (IER) University of Stuttgart.