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Heat waves have been decreasing since the 1930s in the U.S. and globally. | 's Heat Wave Duration Index is that a heat wave occurs when the daily maximum temperature of more than five consecutive days exceeds the average maximum temperature by 5 °C (9 °F), the normal period being 1961–1990. | NOT_ENOUGH_INFO |
For decades, most scientists saw climate change as a distant prospect. | Decades of scientific research have shown that climate can change from both natural and anthropogenic causes. | NOT_ENOUGH_INFO |
the last sea-level high point, … occurred between the last two ice ages, about 125,000 years ago. | The last cold period began about 115,000 years ago and ended 11,700 years ago. | NOT_ENOUGH_INFO |
The drop in NO2 content has only been “slight”. So it cannot be the evil diesel engine cars that are “choking” our cities. | The argument that diesel engine cars are not polluting cities because NO2concentrations haven’t changed even though traffic has declined is flawed. Studies show that diesel car emissions are a major contributor of nitrous oxide emissions in European cities. | REFUTES |
With more CO2 in the atmosphere, the challenge [feeding 2.5 billion more people] can and will be met. | "CO2 in the atmosphere just exceeded 415 parts per million for the first time in human history". | NOT_ENOUGH_INFO |
in a letter to The Times from Lord Krebs and company, essentially telling the newspaper to stop reporting less-than-negative climate stories. | It has also published many columns which reject the scientific consensuses on climate change, on ozone depletion, and on the harmful effects of second-hand smoke. | NOT_ENOUGH_INFO |
In fact, the global melt rate has been accelerating since the mid-1970s. | A 2018 systematic review study estimated that ice loss across the entire continent was 43 gigatons (Gt) per year on average during the period from 1992 to 2002, but has accelerated to an average of 220 Gt per year during the five years from 2012 to 2017. | SUPPORTS |
‘The dry periods are drier and the wet periods are wetter,’ said Jeffrey Mount, a water expert and senior fellow at the Public Policy Institute of California. | Wetlands can be dry during the dry season and abnormally dry periods during the wet season, but under normal environmental conditions the soils in a wetland will be saturated to the surface or inundated such that the soils become anaerobic, and those conditions will persist through the wet portion of the growing season. | NOT_ENOUGH_INFO |
In particular, satellite data demonstrate for the last 17 years, there's been zero warming. | That's the data we've had for the past 150 years, which is quite consistent with the expectation that the climate is continuing to warm." | REFUTES |
Severe ‘snowmageddon’ winters are now strongly linked to soaring polar temperatures, say researchers, with deadly summer heatwaves and torrential floods also probably linked. | The climate is characterized by hot, dry summers and cool, wet winters. | NOT_ENOUGH_INFO |
However the warming trend is slower than most climate models have forecast | The general public had little awareness of carbon dioxide's effects on climate, but Science News in May 1959 forecast a 25% increase in atmospheric carbon dioxide in the 150 years from 1850 to 2000, with a consequent warming trend. | NOT_ENOUGH_INFO |
the total area burned in the western United States over the past 33 years was double the size it would have been without any human-caused warming. | As a result, since the 1980s, both the size and ferocity of fires in California have increased dramatically. | SUPPORTS |
HFCs (hydrofluorocarbons) are tens of thousands of times more polluting than carbon dioxide. | They do not harm the ozone layer as much as the compounds they replace, but they do contribute to global warming, with thousands of times the warming potential of carbon dioxide. | SUPPORTS |
While there are uncertainties with climate models, they successfully reproduce the past and have made predictions that have been subsequently confirmed by observations. | This new explanation is used to make falsifiable predictions that are testable by experiment or observation. | REFUTES |
In South Florida, "we've had nine inches of sea-level rise since the 1920s." | 27 November 2017. | NOT_ENOUGH_INFO |
Numerous case studies on both regional and global scales have determined that renewable energy, if properly implemented, can provide baseload power. | Low temperature Geothermal (generally referred to as "GHP") is an increasingly important renewable technology because it both reduces total annual energy loads associated with heating and cooling, and it also flattens the electric demand curve eliminating the extreme summer and winter peak electric supply requirements. | NOT_ENOUGH_INFO |
Correspondingly, the global surface temperature has also dropped." | Earlier extended minima have been discovered through analysis of tree rings and appear to have coincided with lower-than-average global temperatures. | SUPPORTS |
...there [is] anecdotal and other evidence suggesting similar melts from 1938-43 and on other occasions. | SnPb 63/37 Eutectic solder melts at 183 °C. | NOT_ENOUGH_INFO |
Natural cycles superimposed on a linear warming trend can be mistaken for step changes, but the underlying warming is caused by the external radiative forcing. | Positive radiative forcing results in warming. | SUPPORTS |
The winds around the continent seem to be strengthening, stirring the ocean and bringing up a layer of warmer water that has most likely been there for centuries. | The low-level surface trade winds, which normally blow from east to west along the equator, either weaken or start blowing from the other direction. | NOT_ENOUGH_INFO |
The scientific consensus on whether global warming is human caused is not 97 percent, it’s less than 1 percent. There is no way to measure the human impact on climate change. | Studies analyzing the peer-reviewed scientific literature show that the vast majority of climate scientists (and research) conclude that anthropogenic factors are primarily responsible for climate change. | REFUTES |
The most notorious was 252 million years ago; it began when carbon warmed the planet by five degrees, accelerated when that warming triggered the release of methane in the Arctic, and ended with 97 percent of all life on Earth dead.” | The last continental glaciation ended 10,000 years ago. | NOT_ENOUGH_INFO |
Models are too sensitive to increases in carbon dioxide concentrations in the atmosphere, he said. | Increases in atmospheric concentrations of CO 2 and other long-lived greenhouse gases such as methane, nitrous oxide and ozone have correspondingly strengthened their absorption and emission of infrared radiation, causing the rise in average global temperature since the mid-20th century. | NOT_ENOUGH_INFO |
In our lifetime, there has been no correlation between carbon dioxide emissions and temperature | In that sense, the ice core CO2-temperature correlation remains an appropriate demonstration of the influence of CO2 on climate." | REFUTES |
‘Heatwaves are far more intense than when my parents were growing up in the 1950s. | 's Heat Wave Duration Index is that a heat wave occurs when the daily maximum temperature of more than five consecutive days exceeds the average maximum temperature by 5 °C (9 °F), the normal period being 1961–1990. | NOT_ENOUGH_INFO |
About 120,000 years ago, before the last ice age, the planet went through a natural warm period, with temperatures similar to those expected in coming decades. | "The next five years will be 'anomalously warm,' scientists predict". | NOT_ENOUGH_INFO |
Postma disproved the greenhouse effect. | One reason for the difference between the two values is due to the greenhouse effect, which increases the average temperature of the Earth's surface. | NOT_ENOUGH_INFO |
Cosmic rays show no trend over the last 30 years & have had little impact on recent global warming. | In the scientific literature, there is an overwhelming consensus that global surface temperatures have increased in recent decades and that the trend is caused mainly by human-induced emissions of greenhouse gases. | SUPPORTS |
Climate Models Have Overestimated Global Warming | These models predict an upward trend in the global mean surface temperature, with the most rapid increase in temperature being projected for the higher latitudes of the Northern Hemisphere. | NOT_ENOUGH_INFO |
Ocean levels have been rising for the last 20,000 years[…] No climate scientist can tell you when natural sea level rise stopped and man-made sea level rise began. | Since the last glacial maximum about 20,000 years ago, the sea level has risen by more than 125 metres (410 ft), with rates varying from less than a mm/year to 40+ mm/year, as a result of melting ice sheets over Canada and Eurasia. | SUPPORTS |
[A] series of just-released studies by working-level scientists prove that geological and not atmospheric forces are responsible for melting of Earth’s polar ice sheets. | The studies that this article points to make no such claim. This research characterizes the varying temperature conditions at the base of glaciers that cause them to either freeze to the ground or sit on thawed ground. This has important implications for understanding how different portions of the ice sheet will respond to global warming, but it does not explain the glacial ice loss measured over the last century. | REFUTES |
The IPCC confirms that computer modeling predicts the existence of a tropical, mid-troposphere “hot spot” about 10km above the Earth’s surface. | Computer models are run on supercomputers to reproduce and predict the circulation of the oceans, the annual cycle of the seasons, and the flows of carbon between the land surface and the atmosphere. | NOT_ENOUGH_INFO |
The carbon footprint on wind [energy] is significant. | This comes mainly from wind turbines situated right across Orkney Many initiatives seek to assist individuals, businesses and states in reducing their carbon footprint or achieving climate neutrality. | REFUTES |
The data is being reported by the University of Illinois's Arctic Climate Research Center, and is derived from satellite observations of the Northern and Southern hemisphere polar regions (Daily Tech). | These models typically derive snow water equivalent (SWE) in some manner from satellite observations of snow cover. | NOT_ENOUGH_INFO |
The late 1970s marked the end of a 30-year cooling trend. | Based on orbital models, the cooling trend initiated about 6,000 years ago will continue for another 23,000 years. | REFUTES |
Sea level rise could reach six or seven feet by the year 2100. | Continuing greenhouse gas emissions growth could result in a sea level rise of 0.5 meters (20 inches) to as much as 1 or 2 meters (3.3-6.6 feet) by the year 2100. | SUPPORTS |
Increased atmospheric carbon dioxide has helped raise global food production and reduce poverty. | Continued CO2 emissions will not improve future crop production. Rather, the net result of further climate change will be to hinder global crop yields. | REFUTES |
global warming ceased around the end of the twentieth century and was followed (since 1997) by 19 years of stable temperature. | The average global temperature on Earth has increased by about 0.8° Celsius (1.4° Fahrenheit) since 1880; Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20 °C per decade. | NOT_ENOUGH_INFO |
Trenberth's views are clarified in the paper "An imperative for climate change planning: tracking Earth's global energy". | Climate change is more accurate scientifically to describe the various effects of greenhouse gases on the world because it includes extreme weather, storms and changes in rainfall patterns, ocean acidification and sea level.". | NOT_ENOUGH_INFO |
The result did suggest the sea level was increasing in the western Pacific, but this was offset by a drop in the level near the Alaskan coast. | "Multidecadal sea level anomalies and trends in the western tropical Pacific". | NOT_ENOUGH_INFO |
Tony Abbott the Opposition must respect the Government's mandate to overturn the carbon tax. | Upon becoming Leader of the Opposition, Abbott put the question of support for the Government's Carbon Pollution Reduction Scheme (CPRS) to a secret ballot and the Liberal Party voted to reject the policy – overturning an undertaking by Turnbull to support an amended version of the government's scheme. | SUPPORTS |
A longer and warmer growing season also has an effect, Dr. Overpeck said, as plants take up more water, further reducing stream flows. | While warmer temperatures create longer growing seasons, and faster growth rates for plants, it also increases the metabolic rate and number of breeding cycles of insect populations. | SUPPORTS |
that atmospheric CO2 increase that we observe is a product of temperature increase, and not the other way around, meaning it is a product of natural variation... | But, more accurately, global warming is the mainly human-caused increase in global surface temperatures and its projected continuation, while climate change includes both global warming and its effects, such as changes in precipitation. | NOT_ENOUGH_INFO |
there has been no reduction in oceanic pH levels in the last century | The basis for the claim is a non-peer-reviewed paper that has been shown to have serious flaws. | REFUTES |
In reality, gas produced by fracking is worse for the climate than coal. | Although much less polluting than coal plants, natural gas-fired power plants are also major emitters. | NOT_ENOUGH_INFO |
When South Australians buy electricity at $14,200/MWh, they are paying the equivalent of $400 a litre for petrol. | The maximum price was $14,000/MWh in 2016-2017, $13,800/MWh in 2015-2016, $13,500/MWh in 2014-2015, and $13,100/MWh in 2013-2014. | NOT_ENOUGH_INFO |
"A United Nations report has identified the world's rapidly growing herds of cattle as the greatest threat to the climate, forests and wildlife. ... | Major programmes underway are: ART Global Initiative World Alliance of Cities Against Poverty Territorial Approach to Climate Change Africa–Kazakhstan Partnership for the SDGs Since 1991, the UNDP has annually published the Human Development Report, which includes topics on Human Development and the annual Human Development Index. | NOT_ENOUGH_INFO |
In 1990 the United Nation’s Intergovernmental Panel on Climate Change (IPCC) predicted that temperatures would rise by 0.54F (0.3C) per decade. | Models referenced by the Intergovernmental Panel on Climate Change (IPCC) predict that global temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100. | NOT_ENOUGH_INFO |
A young whizkid [...] invented a device that cuts 50% off an average home’s power bill | The quotes in the video cannot be verified, and clips of other people are incorrectly presented as the sources of the quotes. The claims about energy savings are not accurate. | REFUTES |
There is no question whatsoever that the CO2 increase is human-caused. | Human activities have caused CO 2 to increase above levels not seen in hundreds of thousands of years. | SUPPORTS |
"Unquestionably, the U.N. Intergovernmental Panel on Climate Change (IPCC) was formed to build the scientific case for humanity being the primary cause of global warming. | "The work of the Intergovernmental Panel on Climate Change (IPCC) represents the consensus of the international scientific community on climate change science. | SUPPORTS |
The last time the planet was even four degrees warmer, Peter Brannen points out in The Ends of the World, his new history of the planet’s major extinction events, the oceans were hundreds of feet higher. | The elevation of the land surface varies from the low point of −418 m (−1,371 ft) at the Dead Sea, to a maximum altitude of 8,848 m (29,029 ft) at the top of Mount Everest. | NOT_ENOUGH_INFO |
The claim sea level isn’t rising is based on blatantly doctored graphs contradicted by observations. | Their sea-level curve was based on seismic and biostratigraphic data accumulated during petroleum exploration. | NOT_ENOUGH_INFO |
But each serial adjustment has tended to make the early years colder, which increases the warming trend. | Climate change adaptation is "the adjustment in natural or human systems in response to actual or expected climatic stimuli or their effects, which moderates harm or exploits beneficial opportunities". | NOT_ENOUGH_INFO |
While many scientists have acknowledged the mismatch between model predictions and actual temperature observations, few have really challenged the validity of the models themselves. | Certain scientists, skeptics and otherwise, believe this confidence in the models' ability to predict future climate is not earned. | SUPPORTS |
Consequently, CO2 levels at around 1,000 to 2,300 ppm were actually low enough to promote glaciation in the southern continent of Gondwana. | However, strong evidence exists of glaciation during the Carboniferous to Permian time, especially in South Africa. | SUPPORTS |
Barack Obama will help the Gulf Coast restore the wetlands, marshes and barrier islands that are critical to tamping down the force of hurricanes. | The American Recovery and Reinvestment Act of 2009 and Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010 served as economic stimulus amidst the Great Recession. | NOT_ENOUGH_INFO |
Sea level rise is decelerating. | Climate scientists expect the rate to further accelerate during the 21st century. | REFUTES |
We found 68 stations located at wastewater treatment plants, where the process of waste digestion causes temperatures to be higher than in surrounding areas. | Some European countries require a degree of elevated heat treatment to kill harmful bacteria in the input waste. | SUPPORTS |
Burping cows are more damaging to the climate than all the cars on this planet. | Because methane is a more potent—but much shorter-lived—greenhouse gas than CO2, the timeframe has to be defined for this statement. Methane lasts about a decade before breaking down, while CO2can stay in the atmosphere for centuries. This means that cows do have a greater impact in the near-term, but are responsible for a smaller amount of warming in the long-term. | REFUTES |
The answer lies in the summer’s record-breaking heat, say wildfire experts. | Such human activity, coupled with the unusually high temperatures over the Russian territories, catalyzed this record disturbance. | NOT_ENOUGH_INFO |
“Sea level rise is global. | "One of the most striking trends – over a century of global-average sea level change". | SUPPORTS |
There is ample evidence that Earth's average temperature has increased in the past 100 years and the decline of mid- and high-latitude glaciers is a major piece of evidence. | The Altai region has also experienced an overall temperature increase of 1.2 degrees Celsius in the last 120 years according to a report from 2006, with most of that increase occurring since the late 20th century. | SUPPORTS |
Volcanoes Melting West Antarctic Glaciers, Not Global Warming | This claim is not supported by the three studies cited in the article. The article misinterprets the implications of one study and explicitly rejects the conclusions of the other two. All three studies, which investigated geothermal conditions beneath portions of the West Antarctic Ice Sheet and the past behavior of the ice, simply aimed to better understand how the ice sheet will respond to continued human-caused climate change. | REFUTES |
Scientists used to think that ice sheets could take millennia to respond to changing climates | There is growing evidence that our climate is changing. | NOT_ENOUGH_INFO |
This means it is possible that by some yardsticks, 2016 will be declared as hot as 2015 or even slightly hotter – because El Nino did not vanish until the middle of the year. | As a result of this the BoM, NOAA's CPC, IRI, and the JMA, all declared that the record-tying El Niño event had ended in late May/early June. | SUPPORTS |
Models are too sensitive to increases in carbon dioxide concentrations in the atmosphere, he said. | The equilibrium climate sensitivity (ECS) is the temperature increase that would result from sustained doubling of the concentration of carbon dioxide in Earth's atmosphere, after the Earth's energy budget and the climate system reach radiative equilibrium. | NOT_ENOUGH_INFO |
"The 30 major droughts of the 20th century were likely natural in all respects; and, hence, they are "indicative of what could also happen in the future," as Narisma | "The Longest Running Title Droughts in Sports". | NOT_ENOUGH_INFO |
Previous IPCC reports tended to assume that clouds would have a neutral impact because the warming and cooling feedbacks would cancel each other out. | The main reinforcing feedbacks are the water vapour feedback, the ice–albedo feedback, and probably the net effect of clouds. | SUPPORTS |
Just 0.7% of the world’s forests are coastal mangroves, yet they store up to 10 times as much carbon per hectare as tropical forests. | Net primary production is estimated at 21.9 gigatonnes carbon per year for tropical forests, 8.1 for temperate forests, and 2.6 for boreal forests. | NOT_ENOUGH_INFO |
Protecting and restoring forests would reduce 18% of emissions by 2030 | Japan needs to reduce 26% of green house gas emission from 2013 by 2030 to accomplish Paris Agreement and is trying to reduce 2% of them by forestry. | NOT_ENOUGH_INFO |
an individual heatwave triggering coral bleaching cannot be linked to global warming as the process triggering an individual heatwave is fundamentally different from that triggering global warming | While localized triggers lead to localized bleaching, the large scale coral bleaching events of the recent years have been triggered by global warming. | SUPPORTS |
The jet stream controls broad weather patterns, such as high-pressure and low-pressure systems. | This causes surface low pressure and higher pressure at altitude. | SUPPORTS |
The most recent ocean measurements show consistent warming. | "Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice and rising global average sea level." | SUPPORTS |
Before human burning of fossil fuels triggered global warming, the continent’s ice was in relative balance | The reflection of energy into space resulted in a global cooling, triggering the Pleistocene Ice Age. | NOT_ENOUGH_INFO |
Sea ice has diminished much faster than scientists and climate models anticipated. | Past models have underestimated the rate of Arctic shrinkage and underestimated the rate of precipitation increase. | SUPPORTS |
Temperature errors in the Great Lakes region are not incorporated in any of the global mean temperature records. | Selected climatic data for a global set of standard stations for vegetation. | NOT_ENOUGH_INFO |
Sea-level rise does not seem to depend on ocean temperature, and certainly not on CO2. | The Atlantic is set to warm at a faster pace than the Pacific. | NOT_ENOUGH_INFO |
Brooks added that Antarctic ice is growing. | The brig was periodically chain-lifted above the ice to prevent it from being crushed by the growing ice. | NOT_ENOUGH_INFO |
A 14 August 1912 article from a New Zealand newspaper contained a brief story about how burning coal might produce future warming by adding carbon dioxide to the atmosphere. | Coal production is a major contributor to global warming: burning coal generates large quantities of carbon dioxide and mining operations can release methane, a known greenhouse gas, into the atmosphere. | SUPPORTS |
The warming will slow to a potentially manageable pace only when human emissions are reduced to zero. | Successful adaptation is easier if there are substantial emission reductions. | NOT_ENOUGH_INFO |
unadjusted data suggests that temperatures in Australia have only increased by 0.3 degrees over the past century, not the 1 degree usually claimed. | "Australia's extreme heat is sign of things to come, scientists warn". | NOT_ENOUGH_INFO |
Migration patterns show people heading for warm states like Texas and Florida, not snowy Minnesota and Michigan.” | Because the winter season is dry and freezing temperatures usually occur only after cold fronts (and their accompanying precipitation) have passed, snow is exceptionally rare. | NOT_ENOUGH_INFO |
Less energy is escaping to space: Carbon dioxide (CO2) acts like a blanket; adding more CO2 makes the 'blanket' thicker, and humans are adding more CO2 all the time. | The increased radiative forcing due to increased CO2 in the Earth's atmosphere is based on the physical properties of CO2 and the non-saturated absorption windows where CO2 absorbs outgoing long-wave energy. | SUPPORTS |
Our evolving dynamic planet has survived[…] mass extinctions | This has resulted in a widespread, ongoing mass extinction of other species during the present geological epoch, now known as the Holocene extinction. | NOT_ENOUGH_INFO |
But [climate scientists] say that aspects of the case of Hurricane Harvey—and the recent history of tropical cyclones worldwide—suggest global warming is making a bad situation worse. | "Storm Harvey: impacts likely worsened due to global warming". | SUPPORTS |
Last year, scientists published evidence that the conditions leading up to “stuck jet streams” are becoming more common, with warming in the Arctic seen as a likely culprit. | Warming temperatures in the Arctic may cause large amounts of fresh meltwater to enter the north Atlantic, possibly disrupting global ocean current patterns. | NOT_ENOUGH_INFO |
However, volcanoes have had very little impact on the last 40 years of global warming. | Notable eruptions in the historical records are the 1991 eruption of Mount Pinatubo which lowered global temperatures by about 0.5 °C (0.9 °F) for up to three years, and the 1815 eruption of Mount Tambora causing the Year Without a Summer. | NOT_ENOUGH_INFO |
Models and direct observations find that CFCs only contribute a fraction of the warming supplied by other greenhouse gases. | The report shows in detail the individual warming contributions (positive forcing) of carbon dioxide, methane, nitrous oxide, halocarbons, other human warming factors, and the warming effects of changes in solar activity. | NOT_ENOUGH_INFO |
Small amounts of very active substances can cause large effects. | Slightly higher levels of 5 to 10 mM, which are associated with light social drinking, produce measurable effects including changes in visual acuity, decreased anxiety, and modest behavioral disinhibition. | NOT_ENOUGH_INFO |
Royal Society embraces skepticism | Skepticism (American English) or scepticism (British English, Australian English, and Canadian English) is generally a questioning attitude or doubt towards one or more items of putative knowledge or belief or dogma. | SUPPORTS |
The Independent Climate Change Email Review found the CRU scientists were unhelpful and unsympathetic to information requesters and at times broke FoI laws. | Over 95% of the CRU climate data set had been available to the public for several years before July 2009, when the university received numerous FOI requests for raw data or details of the confidentiality agreements from Stephen McIntyre and readers of his Climate Audit blog. | NOT_ENOUGH_INFO |
as the pathbreaking work by Rosamond Naylor and David Battisti has shown, the tropics are already too hot to efficiently grow grain, and those places where grain is produced today are already at optimal growing temperature — which means even a small warming will push them down the slope of declining productivity. | The polar stratospheric clouds had a warming effect on the poles, increasing temperatures by up to 20 °C in the winter months. | NOT_ENOUGH_INFO |
President Hilda Heine has told reporters that longtime residents are leaving the Marshall Islands because climate change is threatening the nation’s existence.” | "First female President Hilda Hine elected in the Marshall Islands". | NOT_ENOUGH_INFO |
The MWP lasted from about 950 to 1250AD, and temperature records appear to show it was even hotter than today | study found warmth exceeding 1961–1990 levels in Southern Greenland and parts of North America during the Medieval Climate Anomaly (defined in the study from 950 to 1250) with warmth in some regions exceeding temperatures of the 1990–2010 period. | SUPPORTS |
Jupiter's climate change is due to shifts in internal turbulence fueled from an internal heat source - the planet radiates twice as much energy as it receives from the sun. | The water clouds are assumed to generate thunderstorms in the same way as terrestrial thunderstorms, driven by the heat rising from the interior. | SUPPORTS |
We expect to see record cold temperatures even during global warming. | Global warming is the long-term rise in the average temperature of the Earth's climate system. | NOT_ENOUGH_INFO |
Prof Adam Scaife, a climate modelling expert at the UK’s Met Office, said the evidence for a link to shrinking Arctic ice was now good: ‘The consensus points towards that being a real effect.’” | Network of African Science Academies: "A consensus, based on current evidence, now exists within the global scientific community that human activities are the main source of climate change and that the burning of fossil fuels is largely responsible for driving this change." | NOT_ENOUGH_INFO |
“...Seven and a half years have passed since there was any trend in global warming at all” If global warming was caused by human emissions, temperature would rise at a steady rate | To accurately measure global warming, it is necessary to look at all of the available evidence over several decades. A popular technique of climate science contrarians is to focus on short timescales during which surface temperatures reflect interannual variability in order to mask the overall warming trend observed in numerous climate datasets over the last several decades. Taken together, the evidence suggests that the rate of global warming has actually increased, not paused. | REFUTES |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. But the graphs they release to the public show warming trend, and its all because theyve altered the data. | Scientists constantly work to ensure that the data being used to estimate global average temperatures are as accurate as possible—a necessary and much-studied task. Despite the fact that different groups have developed different methods to do this, the warming trend is clear in all available datasets. | REFUTES |