Arguments from Global Warming Skeptics and what the science really says (original) (raw)
Climate Myth
vs
What the Science Says
1
"Climate's changed before"
Climate reacts to whatever forces it to change at the time; humans are now the dominant forcing.
2
"It's the sun"
In the last 35 years of global warming, sun and climate have been going in opposite directions
3
"It's not bad"
Negative impacts of global warming on agriculture, health & environment far outweigh any positives.
4
"There is no consensus"
97% of climate experts agree humans are causing global warming.
5
"It's cooling"
All the indicators show that global warming is still happening.
6
"Models are unreliable"
Models successfully reproduce temperatures since 1900 globally, by land, in the air and the ocean.
7
"Temp record is unreliable"
The warming trend is the same in rural and urban areas, measured by thermometers and satellites.
8
"Animals and plants can adapt"
Global warming will cause mass extinctions of species that cannot adapt on short time scales.
9
"It hasn't warmed since 1998"
10
"Antarctica is gaining ice"
Satellites measure Antarctica losing land ice at an accelerating rate.
11
"Ice age predicted in the 70s"
The vast majority of climate papers in the 1970s predicted warming.
12
"CO2 lags temperature"
CO2 didn't initiate warming from past ice ages but it did amplify the warming.
13
"Climate sensitivity is low"
Net positive feedback is confirmed by many different lines of evidence.
14
"We're heading into an ice age"
Worry about global warming impacts in the next 100 years, not an ice age in over 10,000 years.
15
"Ocean acidification isn't serious"
Ocean acidification threatens entire marine food chains.
16
"Hockey stick is broken"
Recent studies agree that recent global temperatures are unprecedented in the last 1000 years.
17
"Climategate CRU emails suggest conspiracy"
18
"Hurricanes aren't linked to global warming"
There is increasing evidence that hurricanes are getting stronger due to global warming.
19
"Al Gore got it wrong"
Al Gore's book is quite accurate, and far more accurate than contrarian books.
20
"Glaciers are growing"
Most glaciers are retreating, posing a serious problem for millions who rely on glaciers for water.
21
"It's cosmic rays"
Cosmic rays show no trend over the last 30 years & have had little impact on recent global warming.
22
"1934 - hottest year on record"
1934 was one of the hottest years in the US, not globally.
23
"It's freaking cold!"
A local cold day has nothing to do with the long-term trend of increasing global temperatures.
24
"Extreme weather isn't caused by global warming"
Extreme weather events are being made more frequent and worse by global warming.
25
"Sea level rise is exaggerated"
A variety of different measurements find steadily rising sea levels over the past century.
26
"It's Urban Heat Island effect"
Urban and rural regions show the same warming trend.
27
"Medieval Warm Period was warmer"
Globally averaged temperature now is higher than global temperature in medieval times.
28
"Mars is warming"
29
"Arctic icemelt is a natural cycle"
Thick Arctic sea ice is undergoing a rapid retreat.
30
"Increasing CO2 has little to no effect"
The strong CO2 effect has been observed by many different measurements.
31
"Oceans are cooling"
The most recent ocean measurements show consistent warming.
32
"Climate scientists are in it for the money"
33
"It's a 1500 year cycle"
Ancient natural cycles are irrelevant for attributing recent global warming to humans.
34
"Human CO2 is a tiny % of CO2 emissions"
The natural cycle adds and removes CO2 to keep a balance; humans add extra CO2 without removing any.
35
"IPCC is alarmist"
36
"Water vapor is the most powerful greenhouse gas"
Rising CO2 increases atmospheric water vapor, which makes global warming much worse.
37
"Polar bear numbers are increasing"
Polar bears are in danger of extinction as well as many other species.
38
"CO2 limits will harm the economy"
The benefits of a price on carbon outweigh the costs several times over.
39
"It's not happening"
There are many lines of evidence indicating global warming is unequivocal.
40
"Was Greenland really green in the past?"
Other parts of the earth got colder when Greenland got warmer.
41
"CO2 is not a pollutant"
42
"Greenland is gaining ice"
Greenland on the whole is losing ice, as confirmed by satellite measurement.
43
"CO2 is plant food"
44
"There's no empirical evidence"
There are multiple lines of direct observations that humans are causing global warming.
45
"Arctic sea ice has recovered"
Thick arctic sea ice is in rapid retreat.
46
"Other planets are warming"
Mars and Jupiter are not warming, and anyway the sun has recently been cooling slightly.
47
"There's no correlation between CO2 and temperature"
There is long-term correlation between CO2 and global temperature; other effects are short-term.
48
"We're coming out of the Little Ice Age"
49
"It cooled mid-century"
Mid-century cooling involved aerosols and is irrelevant for recent global warming.
50
"Global warming stopped in 1998, 1995, 2002, 2007, 2010, ????"
Global temperature is still rising and 2010 was the hottest recorded.
51
"CO2 was higher in the past"
Climate has changed along with CO2 levels through geological time.
52
"It warmed before 1940 when CO2 was low"
Early 20th century warming is due to several causes, including rising CO2.
53
"Satellites show no warming in the troposphere"
The most recent satellite data show that the earth as a whole is warming.
54
"It's aerosols"
Aerosols have been masking global warming, which would be worse otherwise.
55
"2009-2010 winter saw record cold spells"
A cold day in Chicago in winter has nothing to do with the trend of global warming.
56
"It's a natural cycle"
57
"It's El Niño"
El Nino has no trend and so is not responsible for the trend of global warming.
58
"It's not us"
Multiple sets of independent observations find a human fingerprint on climate change.
59
"Mt. Kilimanjaro's ice loss is due to land use"
Most glaciers are in rapid retreat worldwide, notwithstanding a few complicated cases.
60
"It's Pacific Decadal Oscillation"
The PDO shows no trend, and therefore the PDO is not responsible for the trend of global warming.
61
"There's no tropospheric hot spot"
We see a clear "short-term hot spot" - there's various evidence for a "long-term hot spot".
62
"2nd law of thermodynamics contradicts greenhouse theory"
The 2nd law of thermodynamics is consistent with the greenhouse effect which is directly observed.
63
"Scientists can't even predict weather"
Weather and climate are different; climate predictions do not need weather detail.
64
"IPCC were wrong about Himalayan glaciers"
Glaciers are in rapid retreat worldwide, despite 1 error in 1 paragraph in a 1000 page IPCC report.
65
"Greenhouse effect has been falsified"
The greenhouse effect is standard physics and confirmed by observations.
66
"Clouds provide negative feedback"
67
"CO2 limits will hurt the poor"
Those who contribute the least greenhouse gases will be most impacted by climate change.
68
"Sea level rise predictions are exaggerated"
Sea level rise is now increasing faster than predicted due to unexpectedly rapid ice melting.
69
"The science isn't settled"
That human CO2 is causing global warming is known with high certainty & confirmed by observations.
70
"It's the ocean"
The oceans are warming and moreover are becoming more acidic, threatening the food chain.
71
"IPCC were wrong about Amazon rainforests"
The IPCC statement on Amazon rainforests was correct, and was incorrectly reported in some media.
72
"Corals are resilient to bleaching"
Globally about 1% of coral is dying out each year.
73
"Volcanoes emit more CO2 than humans"
Humans emit 100 times more CO2 than volcanoes.
74
"CO2 effect is saturated"
Direct measurements find that rising CO2 is trapping more heat.
75
"Greenland ice sheet won't collapse"
When Greenland was 3 to 5 degrees C warmer than today, a large portion of the Ice Sheet melted.
76
"CO2 is just a trace gas"
77
"500 scientists refute the consensus"
Around 97% of climate experts agree that humans are causing global warming.
78
"It's methane"
Methane plays a minor role in global warming but could get much worse if permafrost starts to melt.
79
"CO2 has a short residence time"
Excess CO2 from human emissions has a long residence time of over 100 years
80
"CO2 measurements are suspect"
CO2 levels are measured by hundreds of stations across the globe, all reporting the same trend.
81
"Humidity is falling"
Multiple lines of independent evidence indicate humidity is rising and provides positive feedback.
82
"Jupiter is warming"
Jupiter is not warming, and anyway the sun is cooling.
83
"Neptune is warming"
84
"Springs aren't advancing"
Hundreds of flowers across the UK are flowering earlier now than any time in 250 years.
85
"CO2 is not increasing"
CO2 is increasing rapidly, and is reaching levels not seen on the earth for millions of years.
86
"It's land use"
Land use plays a minor role in climate change, although carbon sequestration may help to mitigate.
87
"Scientists tried to 'hide the decline' in global temperature"
88
"Record snowfall disproves global warming"
Warming leads to increased evaporation and precipitation, which falls as increased snow in winter.
89
"They changed the name from 'global warming' to 'climate change'"
'Global warming' and 'climate change' mean different things and have both been used for decades.
90
"Wildfires are not caused by global warming"
91
"Solar Cycle Length proves its the sun"
The sun has not warmed since 1970 and so cannot be driving global warming.
92
"CO2 is coming from the ocean"
The ocean is absorbing massive amounts of CO2, and is becoming more acidic as a result.
93
"CO2 is not the only driver of climate"
Theory, models and direct measurement confirm CO2 is currently the main driver of climate change.
94
"IPCC overestimate temperature rise"
Monckton used the IPCC equation in an inappropriate manner.
95
"Peer review process was corrupted"
96
"Pluto is warming"
And the sun has been recently cooling.
97
"Arctic was warmer in 1940"
The actual data show high northern latitudes are warmer today than in 1940.
98
"CO2 limits will make little difference"
If every nation agrees to limit CO2 emissions, we can achieve significant cuts on a global scale.
99
"Renewable energy is too expensive"
100
"Sea level rise is decelerating"
101
"Southern sea ice is increasing"
Antarctic sea ice has grown in recent decades despite the Southern Ocean warming at the same time.
102
"Humans are too insignificant to affect global climate"
Humans are small but powerful, and human CO2 emissions are causing global warming.
103
"It's microsite influences"
Microsite influences on temperature changes are minimal; good and bad sites show the same trend.
104
"Lindzen and Choi find low climate sensitivity"
Lindzen and Choi’s paper is viewed as unacceptably flawed by other climate scientists.
105
"Phil Jones says no global warming since 1995"
106
"Dropped stations introduce warming bias"
If the dropped stations had been kept, the temperature would actually be slightly higher.
107
"Infrared Iris will reduce global warming"
108
"It's not urgent"
A large amount of warming is delayed, and if we don’t act now we could pass tipping points.
109
"It's too hard"
110
"It's albedo"
Albedo change in the Arctic, due to receding ice, is increasing global warming.
111
"Tree-rings diverge from temperature after 1960"
This is a detail that is complex, local, and irrelevant to the observed global warming trend.
112
"It's soot"
Soot stays in the atmosphere for days to weeks; carbon dioxide causes warming for centuries.
113
"Roy Spencer finds negative feedback"
114
"Hansen's 1988 prediction was wrong"
Jim Hansen had several possible scenarios; his mid-level scenario B was right.
115
"Earth hasn't warmed as much as expected"
This argument ignores the cooling effect of aerosols and the planet's thermal inertia.
116
"It's global brightening"
This is a complex aerosol effect with unclear temperature significance.
117
"Arctic sea ice loss is matched by Antarctic sea ice gain"
Arctic sea ice loss is three times greater than Antarctic sea ice gain.
118
"It's a climate regime shift"
There is no evidence that climate has chaotic “regimes” on a long-term basis.
119
"Solar cycles cause global warming"
Over recent decades, the sun has been slightly cooling & is irrelevant to recent global warming.
120
"A drop in volcanic activity caused warming"
Volcanoes have had no warming effect in recent global warming - if anything, a cooling effect.
121
"Less than half of published scientists endorse global warming"
Around 97% of climate experts agree that humans are causing global warming.
122
"Over 31,000 scientists signed the OISM Petition Project"
The 'OISM petition' was signed by only a few climatologists.
123
"Plant stomata show higher and more variable CO2 levels"
Stomatal data is not as direct as ice core measurements and hence not as precise.
124
"Ice isn't melting"
125
"Sea level is not rising"
The claim sea level isn’t rising is based on blatantly doctored graphs contradicted by observations.
126
"Climate is chaotic and cannot be predicted"
Weather is chaotic but climate is driven by Earth's energy imbalance, which is more predictable.
127
"IPCC ‘disappeared’ the Medieval Warm Period"
128
"It's ozone"
Ozone has only a small effect.
129
"Climate 'Skeptics' are like Galileo"
Modern scientists, not anti-science skeptics, follow in Galileo’s footsteps.
130
"Freedom of Information (FOI) requests were ignored"
131
"The IPCC consensus is phoney"
132
"Tuvalu sea level isn't rising"
Tuvalu sea level is rising 3 times larger than the global average.
133
"Naomi Oreskes' study on consensus was flawed"
Benny Peiser, the Oreskes critic, retracted his criticism.
134
"Renewables can't provide baseload power"
135
"Trenberth can't account for the lack of warming"
Trenberth is talking about the details of energy flow, not whether global warming is happening.
136
"CRU tampered with temperature data"
An independent inquiry went back to primary data sources and were able to replicate CRU's results.
137
"Ice Sheet losses are overestimated"
A number of independent measurements find extensive ice loss from Antarctica and Greenland.
138
"Breathing contributes to CO2 buildup"
By breathing out, we are simply returning to the air the same CO2 that was there to begin with.
139
"Melting ice isn't warming the Arctic"
Melting ice leads to more sunlight being absorbed by water, thus heating the Arctic.
140
"Satellite error inflated Great Lakes temperatures"
Temperature errors in the Great Lakes region are not used in any global temperature records.
141
"Soares finds lack of correlation between CO2 and temperature"
142
"Murry Salby finds CO2 rise is natural"
143
"We're heading into cooling"
There is no scientific basis for claims that the planet will begin to cool in the near future.
144
"97% consensus on human-caused global warming has been disproven"
145
"Most of the last 10,000 years were warmer"
146
"The sun is getting hotter"
The sun has just had the deepest solar minimum in 100 years.
147
"A grand solar minimum could trigger another ice age"
148
"An exponential increase in CO2 will result in a linear increase in temperature"
149
"Climate change solutions are too expensive"
150
"CO2 emissions do not correlate with CO2 concentration"
That humans are causing the rise in atmospheric CO2 is confirmed by multiple isotopic analyses.
151
"It warmed just as fast in 1860-1880 and 1910-1940"
The warming trend over 1970 to 2001 is greater than warming from both 1860 to 1880 and 1910 to 1940.
152
"It's waste heat"
Greenhouse warming is adding 100 times more heat to the climate than waste heat.
153
"Record high snow cover was set in winter 2008/2009"
154
"Water vapor in the stratosphere stopped global warming"
This possibility just means that future global warming could be even worse.
155
"CERN CLOUD experiment proved cosmic rays are causing global warming"
156
"Mauna Loa is a volcano"
The global trend is calculated from hundreds of CO2 measuring stations and confirmed by satellites.
157
"Deniers are part of the 97%"
158
"It's planetary movements"
159
"Venus doesn't have a runaway greenhouse effect"
160
"Antarctica is too cold to lose ice"
Glaciers are sliding faster into the ocean because ice shelves are thinning due to warming oceans.
161
"Positive feedback means runaway warming"
162
"Skeptics were kept out of the IPCC?"
163
"Water levels correlate with sunspots"
This detail is irrelevant to the observation of global warming caused by humans.
164
"CO2 increase is natural, not human-caused"
165
"CO2 was higher in the late Ordovician"
The sun was much cooler during the Ordovician.
166
"Coral atolls grow as sea levels rise"
Thousands of coral atolls have "drowned" when unable to grow fast enough to survive at sea level.
167
"It's internal variability"
168
"No warming in 16 years"
169
"Warming causes CO2 rise"
Recent warming is due to rising CO2.
170
"CO2 limits won't cool the planet"
171
"It's CFCs"
CFCs contribute at a small level.
172
"Renewable energy investment kills jobs"
Investment in renewable energy creates more jobs than investment in fossil fuel energy.
173
"Schmittner finds low climate sensitivity"
174
"Scientists retracted claim that sea levels are rising"
The Siddall 2009 paper was retracted because its predicted sea level rise was too low.
175
"The 97% consensus on human-caused global warming is a robust result"
176
"Ben Santer rewrote the 1995 IPCC report"
177
"DMI show cooling Arctic"
178
"Greenland has only lost a tiny fraction of its ice mass"
Greenland's ice loss is accelerating & will add metres of sea level rise in upcoming centuries.
179
"It's a climate shift step function caused by natural cycles"
180
"It's only a few degrees"
181
"Royal Society embraces skepticism"
The Royal Society still strongly state that human activity is the dominant cause of global warming.
182
"Arctic sea ice extent was lower in the past"
Current Arctic sea ice extent is the lowest in the past several thousand years.
183
"Climate change isn't increasing extreme weather damage costs"
184
"CO2 only causes 35% of global warming"
CO2 and corresponding water vapor feedback are the biggest cause of global warming.
185
"IPCC graph showing accelerating trends is misleading"
186
"It's satellite microwave transmissions"
Satellite transmissions are extremely small and irrelevant.
187
"Sea level fell in 2010"
The temporary drop in sea level in 2010 was due to intense land flooding caused by a strong La Nina.
188
"Great Barrier Reef is in good shape"
189
"Hansen predicted the West Side Highway would be underwater"
Hansen was speculating on changes that might happen if CO2 doubled.
190
"Heatwaves have happened before"
Global warming is increasing the frequency, duration and intensity of heatwaves.
191
"Humans survived past climate changes"
192
"IPCC human-caused global warming attribution confidence is unfounded"
The IPCC 95% confidence that humans are responsible for most of the current global warming is simply a summary of the peer-reviewed scientific research.
193
"Ljungqvist broke the hockey stick"
Ljungqvist's temperature reconstruction is very similar to other reconstructions by Moberg and Mann.
194
"Loehle and Scafetta find a 60 year cycle causing global warming"
195
"Postma disproved the greenhouse effect"
196
"Removing all CO2 would make little difference"
Removing CO2 would cause most water in the air to rain out and cancel most of the greenhouse effect.
197
"UAH atmospheric temperatures prove climate models and/or surface temperature data sets are wrong"
198
"Underground temperatures control climate"
The amount of heat energy coming out of the Earth is too small to even be worth considering.
199
"We didn't have global warming during the Industrial Revolution"
CO2 emissions were much smaller 100 years ago.
200
"Akasofu Proved Global Warming is Just a Recovery from the Little Ice Age"
201
"Animal agriculture and eating meat are the biggest causes of global warming"
202
"Arctic sea ice loss in the 1940s was similar to today's"
Current Arctic sea ice decline is far greater than any decline earlier in the 20th Century.
203
"Arctic Storm Caused the 2012 Record Sea Ice Minimum"
204
"BEST hides the decline in global temperature"
BEST data shows an approximately 0.3°C per decade global warming trend over land.
205
"Clearing trees for solar panels negates any climate change benefits"
206
"Climate science peer review is pal review"
207
"Electric vehicles are impractical due to range restrictions"
208
"Electric vehicles cannot function in hot or cold weather"
209
"Electric vehicles have a net harmful effect on climate change"
210
"Electric vehicles will cost the United States many automobile industry jobs"
211
"Electromagnetic fields from solar farms are harmful to human health"
212
"Electromagnetic radiation from wind turbines poses a threat to human health"
213
"Himalayan glaciers are not shrinking"
Himalayan glaciers supporting hundreds of millions of people are showing consistent loss of ice.
214
"Holistic Management can reverse Climate Change "
215
"IPCC admits global warming has paused"
216
"IPCC edited out natural causes of climate change"
217
"IPCC global warming projections were wrong"
Global surface temperature measurements have fallen within the range of IPCC model projections.
218
"Low-frequency noise from wind turbines harms human health and causes 'wind turbine syndrome'"
219
"Monckton shows the IPCC overestimated warming"
220
"No long tail means climate sensitivity is low"
221
"Northwest passage has been navigated in the past"
222
"Nuclear testing is causing global warming"
CO2 warming is 10,000 times greater than the energy from every nuclear bomb ever exploded.
223
"Offshore wind development is harmful to whales and other marine life"
224
"Planting a trillion trees will solve global warming"
225
"Producing and transporting wind turbine components releases more carbon dioxide than burning fossil fuels"
The average lifecycle emissions of coal is 77 times greater than wind energy.
226
"Reliance on solar will make the United States dependent on China and other countries"
227
"Satellite record is more reliable than thermometers"
Thermometers are more reliable than satellites, so there!
228
"Shadow flicker from wind turbines can trigger seizures in people with epilepsy"
229
"Solar development will destroy jobs"
230
"Solar energy is more expensive than fossil fuels and completely dependent on subsidies"
231
"Solar energy is unreliable"
232
"Solar energy is worse for the climate than burning fossil fuels"
233
"Solar panels don’t work in cold or cloudy climates"
234
"Solar panels generate too much waste and will overwhelm landfills"
235
"Solar projects harm biodiversity"
236
"Solar projects will hurt farmers and rural communities"
237
"The connection between Hurricane Sandy and global warming"
238
"Toxic heavy metals leach out from solar panels and pose a threat to human health"
239
"Tropical thermostat limits sea surface temperature to 30°C"
240
"Utility-scale solar farms destroy the value of nearby homes"
241
"Veganism is the best way to reduce carbon emissions"
242
"We do not have sufficient mineral resources for [large-scale] solar development"
243
"Wind energy is bad for U.S. jobs"
244
"Wind energy is unreliable"
245
"Wind power - particularly offshore wind power - is too expensive"
246
"Wind turbines are a major threat to birds, bats, and other wildlife."
247
"Wind turbines are bad for farmers and rural communities"
248
"Wind turbines are error prone and a threat to human health and safety"
249
"Wind turbines are very noisy"
Depending on distance, wind turbines are comparable in noise to typical household AC-units.
250
"Wind turbines destroy nearby property values"
251
"Wind turbines take up too much land"
252
"Wind turbines will generate an unsustainable amount of waste"