Global Warming Potential
Global warming potential
(GWP) is a measure of how much a given mass of
greenhouse gas
is estimated to contribute to
global warming
. It is a relative scale which compares the
gas
in question to that of the same mass of
carbon dioxide
whose GWP is one. GWP is defined by the
Intergovernmental Panel on Climate Change
(IPCC). An exact definition is to be found in their
2001 Third Assessment Report
.
Examples:
carbon dioxide
has a GWP of exactly 1 (since it is the baseline unit to which all other greenhouse gases are compared.)
methane
has a GWP of 21
nitrogen dioxide
has a GWP of 310
the
hydrofluorocarbon
HFC-23
has a GWP of 11,700
sulfur hexafluoride
(SF
6
) has the highest charted GWP of 23,900
External links
List of Global Warming Potentials and Atmospheric Lifetimes
from the U.S.
EPA
IPCC 2001 Third Assessment Report page on Global Warming Potentials
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