Furthermore,
emissions estimates discussed here include only those from fossil fuels burned within a country's borders, meaning that the tallies do not account for international trade.
Not exact matches
As we
discussed recently in connection with climate «forecasting `, the kinds of simulations used in AR4 are all «projections» i.e. runs that attempt to
estimate the forced response of the climate to
emission changes, but that don't attempt to
estimate the trajectory of the unforced «weather».
David Archer of the University of Chicago has again done yeoman's service by posting a detailed look at this paper on Realclimate (along with last Monday's methane paper,
discussed here, providing a new and higher
estimate of
emissions of this gas across the United States).
This option also avoids or at least defers the politically - fraught battle over which biofuels are truly beneficial to climate and avoids the complexity of calibrating a carbon tax to fit the
estimated lifecycle
emissions of different biofuels, as
discussed in option 3, below.
Furthermore,
estimating the direct and indirect aerosol effects (29) through 2008 as a residual from the Earth's energy balance (as was done for 1954 — 2000) would generate results that either support or contradict the increased importance of anthropogenic sulfur
emissions discussed above.
As we
discussed recently in connection with climate «forecasting `, the kinds of simulations used in AR4 are all «projections» i.e. runs that attempt to
estimate the forced response of the climate to
emission changes, but that don't attempt to
estimate the trajectory of the unforced «weather».