claim
stringclasses 50
values | evidence
stringlengths 31
5.08k
| label
int64 0
1
|
|---|---|---|
Earth’s mean temperature over the last 2,000 years shows two previous periods when temperatures were warmer than they are now; from 1–200 A.D., an epoch called the Roman Warm Period, and more recently the Medieval Warm Period from 900–1100 A.D. | At the end of the last very cold phase of the most recent Ice Age, about 11,500 years ago, temperatures rose extremely rapidly—as much as 10°C leading to migration. | 1 |
They were going to be gone by now, but now they're setting records | After setting record-high extents each September from 2012 through 2014, Antarctic SIE . | 1 |
CO2 does not cause climate change, it RESPONDS to it [...] | However, a national scale analysis projected climate change to cause freshwater species range shifts, but no losses of species in this hotspot . | 1 |
Ironic' study finds more CO2 has slightly cooled the planet | Global surface temperatures increased by about 0.1°C . | 0 |
it’s not a pollutant that threatens human civilization. | It is well established that climate change compounds the impacts of pressures that humans place on the environment . | 0 |
The atmospheric residency time of carbon dioxide is five years | Under one scenario including a peak and decline in atmospheric CO2 concentration . | 1 |
CO2 does not cause climate change, it RESPONDS to it [...] | In addition, all these processes are investigated over short time scales but the long-term response of BVOC emissions depends on how the vegetation itself responds to the altered climate state . | 1 |
There isn’t yet any empirical evidence for their claim that greenhouse gases even cause temperatures to increase. | However, recent evidence suggests that Climate Matters . | 1 |
Human-produced carbon might be one of the factors [of climate change], but there’s simply no evidence that it is a significant one. | As with other subjects assessed in this chapter, there has been significant growth in the number of assessable studies, but there remain shortcomings with respect to the availability of evidence regarding the specific nature of causal linkages and the attributability of particular outcomes to climate events or conditions. | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | Since then, increased warming and progressively more conclusive attribution studies have identified human activities as the ‘dominant cause of the observed warming since the mid-20th century’ . | 1 |
Ice berg melts, ocean level remains the same. | Over the past two decades, Arctic Ocean surface temperature has increased in line with the global average, while there has been no uniform warming across the Antarctic . | 1 |
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability. | Observations in the contemporary period provide little direct constraint on the modelled responses of PP to climate change, partly due to insufficiently long records . | 1 |
Discovery Of Massive Volcanic CO2 Emissions Discredits Global Warming Theory | The largest of these estimates implies tens to hundreds of gigatons of carbon released in the form of CO2 . | 1 |
They tell us that we are the primary forces controlling earth temperatures by the burning of fossil fuels and releasing their carbon dioxide. | It is unequivocal that human influence has warmed the atmosphere, ocean and land. | 0 |
When the exact same group of 'experts' who claimed it was global cooling in 1977 now claim it's global warming you can easily see why I am skeptical | This occurs despite increasing consensus among journalists regarding the basic scientific understanding of climate change Accurate transference of the climate science has been undermined significantly by climate change counter-movements, particularly in the USA in both legacy and new/social media environments through misinformation , including about the causes and consequences of climate change . | 0 |
[O]ne of the previously fastest shrinking glaciers in the world is growing again, calling into question the narrative that rapid climate change [...] | Glacier shrinkage and snow cover changes have led to changes . | 1 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | Many pathways in the literature show how tolimit global warming compared to pre-industrial times to 2°C and higher cumulative CO2 emissions until the time of net zero . | 1 |
Trump's action could push the Earth over the brink, to become like Venus, with a temperature of two hundred and fifty degrees, and raining sulphuric acid. | Scenarios limiting warming to the 1.5°C and 2°C limits in the Paris Agreement can involve temporarily exceeding those warming levels before declining again . | 1 |
[S]unspot activity on the surface of our star has dropped to a new low. | The net effect of this asymmetry on the global surface temperature is poorly constrained due to low agreement between models (low confidence). | 1 |
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability. | It is therefore deemed more likely than not that these estimates based on post-1970s global warming are biased low by internal variability. | 1 |
Ice berg melts, ocean level remains the same. | The ocean is losing dissolved oxygen , salt content is being redistributed and vertical stratification is increasing . | 1 |
Human-produced carbon might be one of the factors [of climate change], but there’s simply no evidence that it is a significant one. | Since then, increased warming and progressively more conclusive attribution studies have identified human activities as the ‘dominant cause of the observed warming since the mid-20th century’ . | 0 |
Ice berg melts, ocean level remains the same. | In spring, when solar radiation returns and sea ice melts, intense phytoplankton blooms fuel food webs that include rich communities of both resident and summer-migrant species, with typically high dependency on a few key species for trophic transfer . | 1 |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. | In the period 1980–2014 a rate of increase of 0.1°C–0.3°C per decade has been observed , and by +1.9°C , relative to the baseline period of 1995–2014, under SSP2-4.5 . | 0 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | The global trends reviewed above are based on data from 2000 studies. | 1 |
Scientists studying Antarctica sea ice warn a rise in accumulation could spark the next ice age. | However, instability and/or irreversible loss of the Greenland and Antarctic ice sheets, resulting in a multi-metre rise in sea level over hundreds to thousands of years, could be triggered at 1.5°C–2°C of global warming while under RCP8.5 multi-metre sea level rise is projected by then chance of limiting global warming to 1.5°C is about 580 GtCO2, and about 420 GtCO2 for a two-in-three . | 0 |
Cold weather to grip world as solar minimum to deepen, NASA says | In scenarios limiting warming to 1.5°C . | 1 |
it’s not a pollutant that threatens human civilization. | Diesel air pollutant emissions are dominated by BC and NOx whereas gasoline air pollutant emissions are dominated by CO and NMVOCs, especially when distribution and upstream losses are considered. | 1 |
Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] | High Arctic regions have warmed by more than double the global average, >2°C in most areas ). | 1 |
[climate scientists] say that aspects of the case of Hurricane Harvey suggest global warming is making a bad situation worse. | For example, in a case study of Hurricane Harvey, Trenberth et al suggested that the lack of realistic hurricane frequency and intensity within coupled climate models hampers the models’ ability to simulate SST and ocean heat content and their changes. | 1 |
Forward projections of solar cyclicity imply the next few decades may be marked by global cooling rather than warming, despite continuing CO2 emissions. | Typically, future climate projections do not consider plausible eruption scenarios and their mitigating effects on greenhouse warming demonstrates a future drier Indian monsoon relative to conditions in which volcanic eruptions are not considered, although the effects of GHG warming dominate beyond the mid-term. | 1 |
The rate of warming according to the data is much slower than the models used by the IPCC | Due to limited observations prior to the satellite era, long-term global CO trends are based on estimates from models. | 1 |
If CO2 was so terrible for the planet, then installing a CO2 generator in a greenhouse would kill the plants. | To limit global warming to below 2°C, CO2 emissions would have to decline by about 25% by 2030 and reach net zero around 2070. | 1 |
Cold weather to grip world as solar minimum to deepen, NASA says | The net effect of this asymmetry on the global surface temperature is poorly constrained due to low agreement between models (low confidence). | 1 |
A windmill could spin until it falls apart and never generate as much energy as was invested in building it. | If mitigation investments are inadequate to reducing global warming . | 1 |
Sea level rise is not going to happen. | Areas with low or negative change have substantial land uplift counteracting the global mean sea level trend . | 1 |
So that means that probably about half, maybe half of that nine-tenths of the degree [of total warming] might be caused by greenhouse gases | This number increases to 59.2–81.3 per million for 2°C warming . | 1 |
Burping cows are more damaging to the climate than all the cars on this planet. | It may also be ‘non-viable’ or damaging to livelihoods in the long run . | 1 |
the bushfires [in Australia] were caused by arsonists and a series of lightning strikes, not 'climate change' | While burned area has increased in parts of Asia, Australia, Europe and South America, published research has not yet attributed the increases to anthropogenic climate change . | 1 |
Scientists studying Antarctica sea ice warn a rise in accumulation could spark the next ice age. | Reanalyses suggest overall increasing sea ice thickness and volume between 1980 and 2010 , while CMIP5 and CMIP6 models simulate a decrease in Antarctic sea ice volume over the historical period. | 1 |
Harvard study finds that wind turbines create MORE global warming than the fossil fuels they eliminate | The dominant human influence on observed global warming and related water cycle changes was confirmed. | 1 |
[NASA] has been adjusting temperatures from the past[...] | Water temperatures in rivers and lakes have increased over the past century by ~1–3°C in major European rivers . | 1 |
If CO2 was so terrible for the planet, then installing a CO2 generator in a greenhouse would kill the plants. | An increase in atmospheric CO2 enhances water-use efficiency by plants ; this could reduce evapotranspiration and contribute to the maintenance of soil moisture and streamflow levels under enhanced atmospheric CO2 concentrations . | 0 |
Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] | Observations of climate changeThe SR1.5 estimated with high confidence that human activities caused a global warming of approximately 1°C between the 1850–1900 period and 2017. | 1 |
The models predicted about three times the amount of warming in the world we’ve seen since [1988]. | A key issue addressed in this Report is whether climate models are adequate or ‘fit’ for purposes of interest, that is, whether they can be used to successfully answer particular research questions, especially about the causes of recent climate change and the future evolution of climate . | 0 |
Human additions of CO2 are in the margin of error of current measurements and the gradual increase in CO2 is mainly from oceans degassing as the planet slowly emerges from the last ice age. | Increases in atmospheric CO2 lead to increases in land carbon storage through CO2 fertilization of photosynthesis and increased water use efficiency , while the ocean is expected to remain a sink . | 1 |
Scientists studying Antarctica sea ice warn a rise in accumulation could spark the next ice age. | In addition, there has been progress in understanding the importance of Antarctic Ice Shelf meltwater and sea ice, in driving the observed changes in the near surface and in the upper overturning cell over the past decades, on top of changes induced by winds and eddies . | 1 |
[S]unspot activity on the surface of our star has dropped to a new low. | There is also scope for new insights into terrestrial water contributions from land surface . | 1 |
[S]unspot activity on the surface of our star has dropped to a new low. | Recent studies showed, using observed cloud controlling factors, that the mid-latitude low-cloud fractions decrease with rising SST, which also acts to weaken stability of the atmosphere unlike in the subtropics . | 1 |
NOAA has adjusted past temperatures to look colder than they were and recent temperatures to look warmer than they were. | Such reconstructions provide a new context for recent warming trends . | 1 |
Volcanoes Melting West Antarctic Glaciers, Not Global Warming | In conclusion, the observed small increase in Antarctic sea ice extent during the satellite era is not generally captured by global climate models, and there is low confidence in attributing the causes of the change. | 1 |
The Great Barrier Reef is experiencing the most widespread bleaching ever recorded | Recently, small-scale MCB and OAC experiments started to take place on the Great Barrier Reef SAI – the most researched SRM method – poses significant international governance challenges since it could potentially be deployed uni- or minilaterally and alter the global mean temperature much faster than any other climate policy measure, at comparatively low direct costs . | 1 |
The science is clear, climate change is making extreme weather events, including tornadoes, worse. | There is increasing awareness that climate change causes weather patterns and extreme events that directly harm military installations and readiness through infrastructure damage, loss of utilities, and loss of operational capability . | 0 |
The rate of warming according to the data is much slower than the models used by the IPCC | This was explored extensively in the IPCC’s SR1.5 report in its comparison of impacts associated with 1.5°C versus 2°C climate objectives and synergies and trade-offs with the SDGs . | 1 |
[NASA] has been adjusting temperatures from the past[...] | Temperature has also driven marine range shifts over multi-million-year time scales . | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | The report also found that Arctic sea ice extent has very likely decreased for all months of the year since 1979 and that September sea ice reductions of 12.8 ± 2.3% per decade are likely unprecedented for at least 1000 years. | 0 |
When the exact same group of 'experts' who claimed it was global cooling in 1977 now claim it's global warming you can easily see why I am skeptical | Energy efficiency of air conditioning systems is of a paramount importance to ensuring that the increased demand for cooling will be satisfied without contributing to global warming through halocarbon emissions . | 1 |
The sun has gone into ‘lockdown’ which could cause freezing weather, earthquakes and famine, say scientists | The lockdowns and societal outcomes arising from the COVID-19 pandemic pose a new threat to observing systems. | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | This could be partly due to a reduction in the zonal SST gradient of the Pacific Ocean, favouring El Niño-like conditions . | 1 |
Forward projections of solar cyclicity imply the next few decades may be marked by global cooling rather than warming, despite continuing CO2 emissions. | In an RCP8.5 scenario, Wild et al conservatively calculate a global reduction of 1% per decade between 2005 and 2049 for future solar power production changes due to changing solar resources as a result of global warming and decreasing all-sky radiation over the coming decades. | 1 |
The science is clear, climate change is making extreme weather events, including tornadoes, worse. | Extreme weather events, particularly droughts, can result in poverty traps keeping people poor or making them poorer, resulting in widening inequalities within and across countries. | 1 |
Harvard study finds that wind turbines create MORE global warming than the fossil fuels they eliminate | Exceeding a specific remaining carbon budget results in higher global warming. | 1 |
Sea level rise has been slow and a constant, pre-dating industrialization | This will be the case even if global warming is stabilized at 1.5°C. | 1 |
[NASA] has been adjusting temperatures from the past[...] | Other missions include NASA’s Operation IceBridge, collecting airborne remote-sensing measurements to bridge the gap between ICESat . | 1 |
Most likely the primary control knob [on climate change] is the ocean waters and this environment that we live in. | In the central Arctic Ocean, primary productivity remains low . | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | The Greenland and Antarctic ice sheets are projected to lose mass at an increasing rate throughout the 21st century and beyond . | 0 |
it’s not a pollutant that threatens human civilization. | Climate change could increase air pollution health effects, with the size of the effect differing across European regions and pollutants . | 0 |
Ironic' study finds more CO2 has slightly cooled the planet | To limit global warming to below 2°C, CO2 emissions would have to decline by about 25% by 2030 and reach net zero around 2070. | 0 |
The models predicted about three times the amount of warming in the world we’ve seen since [1988]. | This enhanced warming is expected to continue in the future. | 1 |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. | Because only one realization of the actual climate exists, it is non-trivial to extract estimates of internal and forced variability from the available data . | 1 |
unadjusted data suggests that temperatures in Australia have only increased by 0.3 degrees over the past century, not the 1 degree usually claimed | Since the mid-20th century, extreme warm temperatures have increased and extreme cold temperatures have decreased in the region . | 1 |
[S]unspot activity on the surface of our star has dropped to a new low. | Multiple reanalysis and radiosonde datasets show that the midwinter lower stratospheric geopotential height . | 1 |
When the exact same group of 'experts' who claimed it was global cooling in 1977 now claim it's global warming you can easily see why I am skeptical | It is therefore more likely than not that no multi-centennial interval during the post-glacial period was warmer globally than the most recent decade ; the LIG indicate that MH warmth was most pronounced north of 30°N latitude, and that GMST subsequently decreased in general, albeit with multi-century variability, with greater cooling in the NH than in the SH The temperature history of the last millennium and the methods used to reconstruct it have been studied extensively, both prior to and following AR5, as summarized recently by Smerdon and Pollack and Christiansen and Ljungqvist . | 1 |
unadjusted data suggests that temperatures in Australia have only increased by 0.3 degrees over the past century, not the 1 degree usually claimed | In New Zealand, an increase of 1.1°C has been measured from 1909–2016 . | 0 |
[O]ne of the previously fastest shrinking glaciers in the world is growing again, calling into question the narrative that rapid climate change [...] | Glacier-melt in response to warming can initially lead to increased runoff volumes, especially in peak summer flows, but they will eventually decline as most glaciers continue to shrink. | 0 |
Sea level rise has been slow and a constant, pre-dating industrialization | Sea level rise is creating conditions where considerable financial investments are needed and, in many cases, are being raised to address adaptation needs . | 0 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | When stocks for some materials saturate – per capita stock peaks – the ‘scrap age’ is coming . | 1 |
Burping cows are more damaging to the climate than all the cars on this planet. | Cirrus clouds trap more outgoing thermal radiation than they reflect incoming solar radiation and thus have an overall warming effect on the climate system . | 1 |
The IPCC, the Intergovernmental Panel on Climate Change, which is sort of the voice of the consensus, concedes that there has been no increase in extreme weather events. | There is limited evidence that extreme wind speeds, which can damage wind turbines, will increase due to climate change . | 0 |
Sea-level rise does not seem to depend on ocean temperature, and certainly not on CO2 | Models also indicate that global sea level rise, as well as warming, ocean acidification and deoxygenation at depth, are irreversible for centuries or longer . | 0 |
So that means that probably about half, maybe half of that nine-tenths of the degree [of total warming] might be caused by greenhouse gases | Conclusions regarding the respective contribution of greenhouse gas forcing to changes in magnitude versus frequency of extremes may also differ . | 1 |
The rate of warming according to the data is much slower than the models used by the IPCC | Contradictory lines of evidence exist between observations and models on the relationship between the rates of warming in GMST and GSAT, compounded by limitations in theoretical understanding. | 1 |
NOAA has adjusted past temperatures to look colder than they were and recent temperatures to look warmer than they were. | This is associated with changing ventilation patterns driven by the North Atlantic Oscillation . | 1 |
The sun has gone into ‘lockdown’ which could cause freezing weather, earthquakes and famine, say scientists | The global mean surface temperature change, or ‘global warming level’ . | 1 |
CO2 does not cause climate change, it RESPONDS to it [...] | Given that CO2 emissions constitute the dominant human influence on global climate, global net zero CO2 emissions are a prerequisite for stabilising warming at any level. | 0 |
[NASA] has been adjusting temperatures from the past[...] | Such reconstructions provide a new context for recent warming trends . | 1 |
Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] | In the 21st century, heatwaves have become hotter, longer and more extended compared to the last two decades of the 20th century . | 1 |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. | This larger warming in the upper troposphere than at the surface has been observed over the last 20 years thanks to the availability of sufficiently accurate observations . | 1 |
They tell us that we are the primary forces controlling earth temperatures by the burning of fossil fuels and releasing their carbon dioxide. | For the role of weather and climate extremes on the global water cycle, see In summary, with ongoing climate warming and an increase in the frequency and intensity of extreme events, observed increases in water temperature, losses of ice and shifts in thermal regime are projected to continue (high confidence). | 1 |
Earth’s mean temperature over the last 2,000 years shows two previous periods when temperatures were warmer than they are now; from 1–200 A.D., an epoch called the Roman Warm Period, and more recently the Medieval Warm Period from 900–1100 A.D. | Multiple lines of evidence indicate the unprecedented nature of recent large-scale climatic changes in the context of all human history, and that these changes represent a millennial-scale commitment for the slow-responding elements of the climate system, resulting in continued worldwide loss of ice, increase in ocean heat content, sea level rise and deep ocean acidification. | 0 |
The science is clear, climate change is making extreme weather events, including tornadoes, worse. | There has been a shift in the distribution of tornadoes, with increases in the mid-south of the USA and decreases over the High Plains . | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | The global mean surface temperature change, or ‘global warming level’ . | 1 |
Human additions of CO2 are in the margin of error of current measurements and the gradual increase in CO2 is mainly from oceans degassing as the planet slowly emerges from the last ice age. | However, CO2 is not the only greenhouse gas that contributes to global warming and reducing emissions of other greenhouse gases (GHGs) alongside CO2 towards net zero emissions of all GHGs would lower the level at which global temperature would peak. | 1 |
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability. | Because only one realization of the actual climate exists, it is non-trivial to extract estimates of internal and forced variability from the available data . | 1 |
Ice berg melts, ocean level remains the same. | Given the agreement between theoretical analyses and paleo-ice-sheet model experiments, there is high confidence that the elevation–mass balance feedback is most relevant at multi-centennial and millennial time scales, consistent with future-focused studies The SROCC adopted the AR5 assessment that complete loss of Greenland ice, contributing about 7 m to sea level, over a millennium or more would occur for a sustained global mean surface temperature confirm this assessment estimate a complete loss to take about 8000 years at 5.5°C and about 3000 years at 8.6°C. | 0 |
The Great Barrier Reef is experiencing the most widespread bleaching ever recorded | The scope and severity of coral bleaching and mortality events have increased in recent decades , with profound implications for the recovery of coral climate archives from new and existing sites. | 0 |
The polar bear population has been growing. | Increasingly favourable environmental conditions due to warming combined with shipping and other activities has raised the rate of invasive species movement into the Arctic . | 1 |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. | Over time scales of 10 to 20 years, the global temperature response to a year’s worth of current emissions of SLCFs is at least as large as that due to a year’s worth of CO2 emissions would not only alleviate this warming but would turn this into a cooling of 0.07°C with a likely range of °C . | 1 |
So that means that probably about half, maybe half of that nine-tenths of the degree [of total warming] might be caused by greenhouse gases | North America is also responsible for about a quarter of global greenhouse gas , and in 2019 the region was responsible for 5.9 MtCO2 emissions worldwide . | 1 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | Heatwaves are projected to become more frequent and intense even at 1.5°C of global warming . | 1 |