ECMWF European Centre for Medium-Range Weather Forecasts

EMICs Earth models of intermediate complexity

ENSO El Niño/Southern Oscillation

EPA Environmental Protection Agency

ESCM Earth System Climate Model

FEMA Federal Emergency Management Agency

FPN fraction of positive minus negative estimates

GCM general circulation model

GDP gross domestic product

GFDL Geophysical Fluid Dynamics Laboratory

GHG greenhouse gas

GISS Goddard Institute for Space Studies

GISS AGCM GISS’s Atmospheric General Circulation Model

GT gigaton

GtC gigaton of carbon (gigaton = 1x109 tons)

GWP global warming potential

H+ hydrogen ion

HadISST Hadley Centre Global Sea Ice and Sea Surface Temperature

HFCs hydrofluorocarbons

IMAGE Integrated Model to Assess the Global Environment

IPCC AR3 Intergovernmental Panel on Climate Change, Third Assessment Report

IPCC AR4 Intergovernmental Panel on Climate Change, Fourth Assessment Report

IS92a global scenario of the IPCC

ITCZ Intertropical Convergence zone

JAS July, August, September

JFM January, February, March

JGOFS Joint Global Ocean Flux Study

JJA June, July, August

LIG interglacial time period

LMSL local mean sea level

LTMIP Long Term Model Intercomparison Project

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