P

Pachauri, Rajendra 13, 27, 129, 153 Pacific Decadal Oscillation (PDO) 115-116

Pacific Ocean 83, 85, 87, 119-120 Pacific plate 44, 46 Pacific Ring of Fire 46-47 paleoclimatology 27, 50 paleomagnetism 48-49 Pangaea 41-43, 50, 51 particulate matter 17-18 PDO (Pacific Decadal Oscillation)

115-116 Penland, Shea 129 periodicity 74, 75 permafrost 21, 140, 143 pesticides 165 Philippine plate 46 photosynthesis 30, 36, 37 planetary/global motions 72-93 plankton 88 plants. See vegetation Plass, Gilbert 126 plate boundary zone 47 plate tectonics 41-54

continental drift 41-44, 42 driving forces of 44-47, 46 global warming and 47-54, 48, 54 polar position hypothesis 49-51 seafloor spreading theory 51-53 uplift weathering hypothesis 53-54, 54

polar bears 142, 143

polar ice 138. See also Arctic warming/

ice melt polar position hypothesis 49-51 polar regions 21, 76, 138-144. See also

Antarctic entries; Arctic entries pollution 149 population 23-24 positive feedback 138-139, 143 positive forcing 147-148, 149 positive NAO 117, 118 precession 75-76 precipitation. See also rainfall and 2007 IPCC report 155-156 and hydrologic cycle 35, 36 and ITCZ 115 and midlatitude cyclones 98 and uplift weathering hypothesis 54

pressure gradients 95, 99-100 Prestrud, Pal 139 Prince William Sound 137 probability 124-125, 153-154 proxies 3

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