G

G8 summit (2003) 173c

GCMs (global climate models) 153-157

geochronology 42-55

geographic information system (GIS)

139-142, 141 geological-geochemical proxies 56 geological oceanographers 84 geologic periods 18, 24. See also specific periods, e.g.: Quaternary geologic timescale 17-21, 166 geology 134

geomorphic landform proxies 58-72, 63 arid environments 61-69, 64, 65 cold environments 69-72, 71, 72 defined 56

geologic evidence 60-61 geomorphology 59 Ghoneim, Eman 135-136 giant bison 98

GIS. See geographic information system GISS. See Goddard Institute for Space

Studies GISS ModelE 145

glacial cycles xvi glacial deposition 26, 27, 29 glacial episodes 32 glacial ice 35, 90 glacial melt 9, 33-34 glacial moraines 70 glacial periods xvi, 11, 19 glacial striations 72 glaciation and Faint Young Sun paradox 25 and landforms of cold environments 70-71

during Little Ice Age 36, 37 plate tectonics and 19 during Precambrian 23 glaciers 61, 71, 72, 90, 92 global climate models (GCMs) 153-157 global conveyor belt 144-145 global cooling and Alaskan vegetation 113 disruption of MOC 145 Heinrich Events 35 in Iceland 126 Late Holocene Neoglacial

Fluctuations 36 Mount Pinatubo eruption 156 plate tectonics and 19 global warming

Jean-Baptiste Fourier's theories 169c GIS for analysis of effects of 140 Hothouse Earth period 30, 31 media awareness of 171c Mid-Holocene Thermal Maximum 35-36

mid-late Cretaceous 112 and plate tectonics 19 potential economic effects 174c scientific community's focus on 170c, 171c

Goddard Institute for Space Studies

(GISS) 3, 4, 149, 153, 154 Gore, Al 173c, 174c Gornitz, Vivien 146 gradient 60 grassland 79 Great Famine 37 Great Green Wall 129 Great Plains 67, 111-112 Greece 130

greenhouse effect xvi, 18-19, 29, 169c greenhouse gases 8, 89, 149 "Greenhouse World" 30-32, 31 Greenland ice cores 85, 170c, 171c landforms of cold environments 69 Little Ice Age 37-38, 127 Penultimate Interglacial Period 33-34

potential collapse of ice sheets 173c groundwater 93 growth bands 107 Gulf Stream 9 gypsum 146

0 0

Post a comment