G

general circulation models (GCMs) 50 general circulation of the atmosphere 80 geomorphology 53 Giese, Benjamin 116 GISS (Goddard Institute for Space Studies) 167-170 glacial cycles 69, 73 glacial melt 162 glacial periods 69 glaciation 73

Glacier National Park, Montana 162 glaciers 56, 121

global cooling 47, 53, 54, 59, 60 global dimming 18 global energy balance 66-69 global system 5-6 global warming current state of scientific knowledge

157-159 defined 7-10 early studies 123-124 environmental awareness 132-144 expert testimony 167-171 facts about 173 first theories 175c future issues 159-174 as global issue 146-160 increased awareness of 176c and IPCC 152-157 myths/facts about 8-9 as political/economic issue 122-145 public/media response 144-145 research needs 172-174 scientific consensus on 144-145, 161-163

scientific inquiry and limits of technology 150-152 scientific viewpoints and scale 124126

technological advances and education 126, 128, 130-132 global warming skeptics 127

global warming supporters 129-130 Goddard Institute for Space Studies

(GISS) 167-170 Gore, Al 15, 179c great ocean conveyor belt 6, 7, 119-121 Great Salt Lake (Utah) 102 greenhouse effect 1, 14-27, 17-20, 22,

25, 158, 176c, 177c greenhouse gases. See also carbon dioxide cap and trade 179c carbon dioxide as 28-29 climate forcing 147, 149 contents of 19 global energy balance 67 greenhouse effect 1, 7 IPCC report 177c oceans and 112

scientific consensus on 144-145 trade winds 84 greenhouse intervals 47, 53 greenhouse warming 112 Greenland 177c-179c Gulf Stream 118, 120, 121 Gutzler, David 131

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