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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: 14618

1 Models are unreliable 16.9%
2 Temp record is unreliable 7.2%
3 Hockey stick is broken 4.8%
4 Climate's changed before 4.0%
5 It's the sun 3.1%
6 There's no empirical evidence 2.8%
7 There is no consensus 2.3%
8 1934 - hottest year on record 2.1%
9 It's cooling 2.1%
10 CO2 limits will harm the economy 2.1%
11 It's freaking cold! 1.9%
12 It hasn't warmed since 1998 1.8%
13 Medieval Warm Period was warmer 1.6%
14 Antarctica is gaining ice 1.4%
15 We're heading into an ice age 1.4%
16 Polar bear numbers are increasing 1.3%
17 Renewables can't provide baseload power 1.3%
18 It's not bad 1.3%
19 It's a 1500 year cycle 1.3%
20 Increasing CO2 has little to no effect 1.2%
21 Tree-rings diverge from temperature after 1960 1.2%
22 Al Gore got it wrong 1.1%
23 Ice age predicted in the 70s 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 0.9%
28 Greenland was green 0.8%
29 CO2 lags temperature 0.8%
30 Phil Jones says no global warming since 1995 0.8%
31 Volcanoes emit more CO2 than humans 0.8%
32 We're coming out of the Little Ice Age 0.7%
33 Sea level rise predictions are exaggerated 0.7%
34 Climate sensitivity is low 0.7%
35 Ice isn't melting 0.7%
36 Global warming stopped in 1998, 1995, 2002, 2007, 2010, ???? 0.7%
37 Oceans are cooling 0.7%
38 IPCC is alarmist 0.6%
39 CO2 was higher in the past 0.6%
40 2009-2010 winter saw record cold spells 0.6%
41 Human CO2 is a tiny % of CO2 emissions 0.5%
42 It's a natural cycle 0.5%
43 IPCC were wrong about Himalayan glaciers 0.5%
44 The science isn't settled 0.5%
45 Greenland ice sheet won't collapse 0.5%
46 It's microsite influences 0.5%
47 Dropped stations introduce warming bias 0.5%
48 Water vapor is the most powerful greenhouse gas 0.4%
49 Glaciers are growing 0.4%
50 Less than half of published scientists endorse global warming 0.4%
51 Arctic icemelt is a natural cycle 0.4%
52 Sea level rise is exaggerated 0.4%
53 Record snowfall disproves global warming 0.4%
54 Scientists can't even predict weather 0.4%
55 Humans are too insignificant to affect global climate 0.4%
56 Solar cycles cause global warming 0.3%
57 Over 31,000 scientists signed the OISM Petition Project 0.3%
58 Hansen's 1988 prediction was wrong 0.3%
59 CO2 effect is saturated 0.3%
60 There's no correlation between CO2 and temperature 0.3%
61 It's only a few degrees 0.3%
62 Greenland is gaining ice 0.3%
63 Scientists tried to 'hide the decline' in global temperature 0.3%
64 Other planets are warming 0.3%
65 CO2 only causes 35% of global warming 0.3%
66 Arctic sea ice has recovered 0.3%
67 It cooled mid-century 0.3%
68 CO2 has a short residence time 0.3%
69 Mars is warming 0.3%
70 Ocean acidification isn't serious 0.3%
71 Warming causes CO2 rise 0.3%
72 It's cosmic rays 0.3%
73 Trenberth can't account for the lack of warming 0.3%
74 Earth hasn't warmed as much as expected 0.3%
75 Melting ice isn't warming the Arctic 0.3%
76 Murry Salby finds CO2 rise is natural 0.3%
77 500 scientists refute the consensus 0.2%
78 Climate is chaotic and cannot be predicted 0.2%
79 Peer review process was corrupted 0.2%
80 CO2 is not the only driver of climate 0.2%
81 The IPCC consensus is phoney 0.2%
82 It's El Niño 0.2%
83 They changed the name from 'global warming' to 'climate change' 0.2%
84 CRU tampered with temperature data 0.2%
85 CO2 is plant food 0.2%
86 The sun is getting hotter 0.2%
87 Satellite error inflated Great Lakes temperatures 0.2%
88 Greenhouse effect has been falsified 0.2%
89 Mt. Kilimanjaro's ice loss is due to land use 0.2%
90 CO2 measurements are suspect 0.2%
91 It's methane 0.2%
92 Naomi Oreskes' study on consensus was flawed 0.2%
93 IPCC overestimate temperature rise 0.2%
94 Extreme weather isn't caused by global warming 0.2%
95 Neptune is warming 0.2%
96 It warmed before 1940 when CO2 was low 0.2%
97 Jupiter is warming 0.2%
98 Solar Cycle Length proves its the sun 0.2%
99 We're heading into cooling 0.2%
100 It's CFCs 0.2%
101 2nd law of thermodynamics contradicts greenhouse theory 0.1%
102 It's a climate regime shift 0.1%
103 Humidity is falling 0.1%
104 It's albedo 0.1%
105 Lindzen and Choi find low climate sensitivity 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 Positive feedback means runaway warming 0.1%
112 We didn't have global warming during the Industrial Revolution 0.1%
113 DMI show cooling Arctic 0.1%
114 Greenland has only lost a tiny fraction of its ice mass 0.1%
115 Pluto is warming 0.1%
116 It warmed just as fast in 1860-1880 and 1910-1940 0.1%
117 Antarctica is too cold to lose ice 0.1%
118 Southern sea ice is increasing 0.1%
119 Postma disproved the greenhouse effect 0.1%
120 A drop in volcanic activity caused warming 0.1%
121 It's Pacific Decadal Oscillation 0.1%
122 Royal Society embraces skepticism 0.1%
123 Roy Spencer finds negative feedback 0.1%
124 CO2 is coming from the ocean 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 There's no tropospheric hot spot 0.1%
129 Ice Sheet losses are overestimated 0.1%
130 Most of the last 10,000 years were warmer 0.1%
131 Water levels correlate with sunspots 0.1%
132 Clouds provide negative feedback 0.1%
133 It's ozone 0.1%
134 Soares finds lack of correlation between CO2 and temperature 0.1%
135 CO2 is not increasing 0.1%
136 Freedom of Information (FOI) requests were ignored 0.1%
137 Skeptics were kept out of the IPCC? 0.1%
138 Satellites show no warming in the troposphere 0.1%
139 Record high snow cover was set in winter 2008/2009 0.1%
140 Arctic sea ice extent was lower in the past 0.0%
141 It's the ocean 0.0%
142 It's satellite microwave transmissions 0.0%
143 Corals are resilient to bleaching 0.0%
144 It's waste heat 0.0%
145 It's land use 0.0%
146 Arctic sea ice loss is matched by Antarctic sea ice gain 0.0%
147 CERN CLOUD experiment proved cosmic rays are causing global warming 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 Mauna Loa is a volcano 0.0%
151 CO2 emissions do not correlate with CO2 concentration 0.0%
152 Loehle and Scafetta find a 60 year cycle causing global warming 0.0%
153 It's global brightening 0.0%
154 Sea level fell in 2010 0.0%


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