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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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Climate's changed before
It's the sun
It's not bad
There is no consensus
It's cooling
Models are unreliable
Temp record is unreliable
Animals and plants can adapt
It hasn't warmed since 1998
Antarctica is gaining ice
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Skeptical Science iPhone Reports

Here are global warming skeptic arguments ranked by how often they've been reported from the Skeptical Science iPhone app. You can download the iPhone app for free from http://itunes.com/apps/skepticalscience.

Total # of reports submitted: 15310

1 Models are unreliable 16.1%
2 Temp record is unreliable 7.2%
3 Hockey stick is broken 4.9%
4 Climate's changed before 4.2%
5 It's the sun 3.0%
6 There's no empirical evidence 2.8%
7 There is no consensus 2.3%
8 It's cooling 2.2%
9 1934 - hottest year on record 2.2%
10 CO2 limits will harm the economy 2.1%
11 It's freaking cold! 2.0%
12 It hasn't warmed since 1998 1.9%
13 Medieval Warm Period was warmer 1.5%
14 Antarctica is gaining ice 1.5%
15 We're heading into an ice age 1.3%
16 Renewables can't provide baseload power 1.3%
17 Polar bear numbers are increasing 1.3%
18 Increasing CO2 has little to no effect 1.3%
19 It's not bad 1.2%
20 It's a 1500 year cycle 1.2%
21 Tree-rings diverge from temperature after 1960 1.2%
22 Ice age predicted in the 70s 1.0%
23 Al Gore got it wrong 1.0%
24 CO2 is not a pollutant 1.0%
25 Climategate CRU emails suggest conspiracy 1.0%
26 It's Urban Heat Island effect 1.0%
27 Animals and plants can adapt 1.0%
28 CO2 lags temperature 0.9%
29 Greenland was green 0.8%
30 Phil Jones says no global warming since 1995 0.8%
31 Volcanoes emit more CO2 than humans 0.8%
32 Global warming stopped in 1998, 1995, 2002, 2007, 2010, ???? 0.8%
33 Sea level rise predictions are exaggerated 0.7%
34 Oceans are cooling 0.7%
35 We're coming out of the Little Ice Age 0.7%
36 Climate sensitivity is low 0.7%
37 Ice isn't melting 0.7%
38 IPCC is alarmist 0.6%
39 2009-2010 winter saw record cold spells 0.6%
40 CO2 was higher in the past 0.6%
41 It's a natural cycle 0.6%
42 Human CO2 is a tiny % of CO2 emissions 0.6%
43 IPCC were wrong about Himalayan glaciers 0.5%
44 The science isn't settled 0.5%
45 Dropped stations introduce warming bias 0.5%
46 It's microsite influences 0.5%
47 Greenland ice sheet won't collapse 0.5%
48 Water vapor is the most powerful greenhouse gas 0.4%
49 Glaciers are growing 0.4%
50 Record snowfall disproves global warming 0.4%
51 Less than half of published scientists endorse global warming 0.4%
52 Arctic icemelt is a natural cycle 0.4%
53 Sea level rise is exaggerated 0.4%
54 Humans are too insignificant to affect global climate 0.4%
55 Scientists can't even predict weather 0.4%
56 Solar cycles cause global warming 0.3%
57 It's only a few degrees 0.3%
58 CO2 effect is saturated 0.3%
59 There's no correlation between CO2 and temperature 0.3%
60 Over 31,000 scientists signed the OISM Petition Project 0.3%
61 Greenland is gaining ice 0.3%
62 Hansen's 1988 prediction was wrong 0.3%
63 Scientists tried to 'hide the decline' in global temperature 0.3%
64 Arctic sea ice has recovered 0.3%
65 Other planets are warming 0.3%
66 CO2 has a short residence time 0.3%
67 Earth hasn't warmed as much as expected 0.3%
68 CO2 only causes 35% of global warming 0.3%
69 They changed the name from 'global warming' to 'climate change' 0.3%
70 Mars is warming 0.3%
71 Ocean acidification isn't serious 0.3%
72 Trenberth can't account for the lack of warming 0.3%
73 Warming causes CO2 rise 0.3%
74 It cooled mid-century 0.3%
75 It's cosmic rays 0.3%
76 Melting ice isn't warming the Arctic 0.3%
77 500 scientists refute the consensus 0.2%
78 Murry Salby finds CO2 rise is natural 0.2%
79 The IPCC consensus is phoney 0.2%
80 CO2 is plant food 0.2%
81 CO2 is not the only driver of climate 0.2%
82 Climate is chaotic and cannot be predicted 0.2%
83 Peer review process was corrupted 0.2%
84 It's El Niño 0.2%
85 CRU tampered with temperature data 0.2%
86 Satellite error inflated Great Lakes temperatures 0.2%
87 The sun is getting hotter 0.2%
88 Greenhouse effect has been falsified 0.2%
89 We're heading into cooling 0.2%
90 It's methane 0.2%
91 Mt. Kilimanjaro's ice loss is due to land use 0.2%
92 CO2 measurements are suspect 0.2%
93 Naomi Oreskes' study on consensus was flawed 0.2%
94 Neptune is warming 0.2%
95 IPCC overestimate temperature rise 0.2%
96 2nd law of thermodynamics contradicts greenhouse theory 0.2%
97 Extreme weather isn't caused by global warming 0.2%
98 It warmed before 1940 when CO2 was low 0.2%
99 It's a climate regime shift 0.2%
100 Jupiter is warming 0.2%
101 Solar Cycle Length proves its the sun 0.2%
102 It's CFCs 0.1%
103 Humidity is falling 0.1%
104 Lindzen and Choi find low climate sensitivity 0.1%
105 It's albedo 0.1%
106 Hurricanes aren't linked to global warming 0.1%
107 Scientists retracted claim that sea levels are rising 0.1%
108 IPCC were wrong about Amazon rainforests 0.1%
109 Springs aren't advancing 0.1%
110 CO2 was higher in the late Ordovician 0.1%
111 DMI show cooling Arctic 0.1%
112 Antarctica is too cold to lose ice 0.1%
113 Greenland has only lost a tiny fraction of its ice mass 0.1%
114 Positive feedback means runaway warming 0.1%
115 Roy Spencer finds negative feedback 0.1%
116 We didn't have global warming during the Industrial Revolution 0.1%
117 Postma disproved the greenhouse effect 0.1%
118 It warmed just as fast in 1860-1880 and 1910-1940 0.1%
119 Pluto is warming 0.1%
120 Southern sea ice is increasing 0.1%
121 Royal Society embraces skepticism 0.1%
122 A drop in volcanic activity caused warming 0.1%
123 CO2 is coming from the ocean 0.1%
124 There's no tropospheric hot spot 0.1%
125 Skeptics were kept out of the IPCC? 0.1%
126 Tuvalu sea level isn't rising 0.1%
127 It's aerosols 0.1%
128 Breathing contributes to CO2 buildup 0.1%
129 Record high snow cover was set in winter 2008/2009 0.1%
130 It's Pacific Decadal Oscillation 0.1%
131 Freedom of Information (FOI) requests were ignored 0.1%
132 Water levels correlate with sunspots 0.1%
133 Ice Sheet losses are overestimated 0.1%
134 Most of the last 10,000 years were warmer 0.1%
135 Clouds provide negative feedback 0.1%
136 It's ozone 0.1%
137 Soares finds lack of correlation between CO2 and temperature 0.1%
138 CO2 is not increasing 0.1%
139 Arctic sea ice extent was lower in the past 0.1%
140 Satellites show no warming in the troposphere 0.1%
141 Mauna Loa is a volcano 0.1%
142 It's waste heat 0.1%
143 Arctic sea ice loss is matched by Antarctic sea ice gain 0.0%
144 It's the ocean 0.0%
145 It's satellite microwave transmissions 0.0%
146 Corals are resilient to bleaching 0.0%
147 It's land use 0.0%
148 Water vapor in the stratosphere stopped global warming 0.0%
149 An exponential increase in CO2 will result in a linear increase in temperature 0.0%
150 CERN CLOUD experiment proved cosmic rays are causing global warming 0.0%
151 97% consensus on human-caused global warming has been disproven 0.0%
152 CO2 emissions do not correlate with CO2 concentration 0.0%
153 Loehle and Scafetta find a 60 year cycle causing global warming 0.0%
154 It's global brightening 0.0%
155 Sea level fell in 2010 0.0%


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