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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: 15178

1 Models are unreliable 16.3%
2 Temp record is unreliable 7.2%
3 Hockey stick is broken 4.9%
4 Climate's changed before 4.1%
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 2.1%
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 Global warming stopped in 1998, 1995, 2002, 2007, 2010, ???? 0.8%
32 Volcanoes emit more CO2 than humans 0.8%
33 Sea level rise predictions are exaggerated 0.7%
34 We're coming out of the Little Ice Age 0.7%
35 Climate sensitivity is low 0.7%
36 Oceans are cooling 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 It's only a few degrees 0.3%
57 Solar cycles cause global warming 0.3%
58 CO2 effect is saturated 0.3%
59 Over 31,000 scientists signed the OISM Petition Project 0.3%
60 There's no correlation between CO2 and temperature 0.3%
61 Hansen's 1988 prediction was wrong 0.3%
62 Scientists tried to 'hide the decline' in global temperature 0.3%
63 Greenland is gaining ice 0.3%
64 Arctic sea ice has recovered 0.3%
65 Other planets are warming 0.3%
66 Earth hasn't warmed as much as expected 0.3%
67 CO2 only causes 35% of global warming 0.3%
68 Mars is warming 0.3%
69 Ocean acidification isn't serious 0.3%
70 CO2 has a short residence time 0.3%
71 They changed the name from 'global warming' to 'climate change' 0.3%
72 Warming causes CO2 rise 0.3%
73 It cooled mid-century 0.3%
74 Trenberth can't account for the lack of warming 0.3%
75 Melting ice isn't warming the Arctic 0.3%
76 It's cosmic rays 0.3%
77 500 scientists refute the consensus 0.3%
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 It's methane 0.2%
90 Mt. Kilimanjaro's ice loss is due to land use 0.2%
91 We're heading into cooling 0.2%
92 Naomi Oreskes' study on consensus was flawed 0.2%
93 CO2 measurements are suspect 0.2%
94 IPCC overestimate temperature rise 0.2%
95 Extreme weather isn't caused by global warming 0.2%
96 Neptune is warming 0.2%
97 It warmed before 1940 when CO2 was low 0.2%
98 It's a climate regime shift 0.2%
99 Jupiter is warming 0.2%
100 Solar Cycle Length proves its the sun 0.2%
101 It's CFCs 0.1%
102 2nd law of thermodynamics contradicts greenhouse theory 0.1%
103 Humidity is falling 0.1%
104 Lindzen and Choi find low climate sensitivity 0.1%
105 Hurricanes aren't linked to global warming 0.1%
106 It's albedo 0.1%
107 Scientists retracted claim that sea levels are rising 0.1%
108 Springs aren't advancing 0.1%
109 IPCC were wrong about Amazon rainforests 0.1%
110 CO2 was higher in the late Ordovician 0.1%
111 DMI show cooling Arctic 0.1%
112 Greenland has only lost a tiny fraction of its ice mass 0.1%
113 Antarctica is too cold to lose ice 0.1%
114 Positive feedback means runaway warming 0.1%
115 Postma disproved the greenhouse effect 0.1%
116 It warmed just as fast in 1860-1880 and 1910-1940 0.1%
117 Roy Spencer finds negative feedback 0.1%
118 We didn't have global warming during the Industrial Revolution 0.1%
119 Pluto is warming 0.1%
120 Royal Society embraces skepticism 0.1%
121 A drop in volcanic activity caused warming 0.1%
122 Southern sea ice is increasing 0.1%
123 CO2 is coming from the ocean 0.1%
124 There's no tropospheric hot spot 0.1%
125 Tuvalu sea level isn't rising 0.1%
126 It's aerosols 0.1%
127 Breathing contributes to CO2 buildup 0.1%
128 Record high snow cover was set in winter 2008/2009 0.1%
129 It's Pacific Decadal Oscillation 0.1%
130 Freedom of Information (FOI) requests were ignored 0.1%
131 Water levels correlate with sunspots 0.1%
132 Skeptics were kept out of the IPCC? 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 It's waste heat 0.1%
142 Arctic sea ice loss is matched by Antarctic sea ice gain 0.0%
143 It's the ocean 0.0%
144 It's satellite microwave transmissions 0.0%
145 Corals are resilient to bleaching 0.0%
146 Mauna Loa is a volcano 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 CO2 emissions do not correlate with CO2 concentration 0.0%
152 It's global brightening 0.0%
153 97% consensus on human-caused global warming has been disproven 0.0%
154 Loehle and Scafetta find a 60 year cycle causing global warming 0.0%
155 Sea level fell in 2010 0.0%


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