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Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] | GSAT projected for the end of the 23rd century under SSP2-4.5 has not been experienced since the mid-Pliocene, about 3 million years ago. | 1 |
More than 500 scientists and professionals in climate and related fields have sent a 'European Climate Declaration' to the Secretary-General of the United Nations | These include: the Paris Agreement under the 1992 United Nations Framework Convention on Climate Change , alongside goals for adaptation . | 1 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | The majority of the climate science community has reached consensus that mean global temperature has increased and human activity is a major cause , setting the context for public policy action. | 0 |
Cold weather to grip world as solar minimum to deepen, NASA says | While the shorter observational record in winter , winter mixed-layer depths deepening at rates of 10 m per decade have been reported at individual long-term mid-latitude monitoring sites . | 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. | The amplitude of the El Niño–Southern Oscillation but there is no clear evidence of human influence . | 1 |
The science is clear, climate change is making extreme weather events, including tornadoes, worse. | Extreme events such as heatwaves, droughts, floods, storms and fires have caused deaths and injuries and reduced adaptive capacity Slow-onset climate change impacts have also had cascading and compounding effects. | 0 |
it’s not a pollutant that threatens human civilization. | However, evidence does not indicate that human mobility constitutes a general risk to peace. | 1 |
The Great Barrier Reef is experiencing the most widespread bleaching ever recorded | Extreme climatic events in Australia from 2011 to 2017 led to abrupt and extensive mortality of key habitat-forming organisms — corals, kelps, seagrasses and mangroves — along over 45% of the continental coastline of Australia In 2016 and 2017, the GBR experienced consecutive occurrences of the most severe coral bleaching in recorded history . | 0 |
The rate of warming according to the data is much slower than the models used by the IPCC | If warming is held to 1.5°C, GMSL will still continue to rise well beyond 2100, but at a slower rate and a lower magnitude. | 1 |
[NASA] has been adjusting temperatures from the past[...] | Some adaptation measures will also become less effective at higher temperatures. | 1 |
The polar bear population has been growing. | Macroalgae and seagrass are generally expanding in the Arctic . | 1 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | The specific global mean temperature is known as global warming level , always taking into account caveats described in Cross-Chapter Box 11.1. | 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. | The increase in global temperature level up to 2°C will exacerbate food and water insecurity in the Amazon . | 1 |
The sun has gone into ‘lockdown’ which could cause freezing weather, earthquakes and famine, say scientists | People are exposed to intense drought and famine . | 1 |
[O]ne of the previously fastest shrinking glaciers in the world is growing again, calling into question the narrative that rapid climate change [...] | The Special Report on the Ocean and Cryosphere in a Changing Climate , with glaciers retreating globally since the mid-20th century . | 0 |
The sun has gone into ‘lockdown’ which could cause freezing weather, earthquakes and famine, say scientists | Most of these impacts have been associated with drought, monsoon rain and oceanic oscillations, the frequency and severity of which have been linked with the changing climate . | 0 |
CO2 does not cause climate change, it RESPONDS to it [...] | Climate has always varied and changed in the past, and this change often caused substantial ecological, evolutionary and socioeconomic impacts. | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | Widespread permafrost thaw is projected to continue through this century and beyond. | 0 |
Burping cows are more damaging to the climate than all the cars on this planet. | Studies simply educating people about the negative health and environmental/climate outcomes of meat consumption have been found to have very little impact . | 1 |
Sea level rise has been slow and a constant, pre-dating industrialization | Interactions between sea level rise and storm surges , and sea level and fluvial flooding are projected to lead to more frequent and intense compound coastal flooding events as sea levels continue to rise. | 0 |
according, again, to the official figures—during this past 10 years, if anything, mean global temperature, average world temperature, has slightly declined | Mean temperatures over the region have increased by 0.7°C–1°C from 1973 to 2013, depending on the season . | 0 |
Global warming is driving polar bears toward extinction | The North American Arctic is warming at nearly three times the global average, creating a cascading web of local, regional and global impacts within and beyond polar regions. | 1 |
Most likely the primary control knob [on climate change] is the ocean waters and this environment that we live in. | In summary, climate change is one of the key drivers of the loss and degradation of freshwater ecosystems and the unprecedented decline and extinction of many freshwater-dependent populations. | 1 |
Sea-level rise does not seem to depend on ocean temperature, and certainly not on CO2 | SRM would not counteract or stop ocean acidification (high confidence). | 1 |
NOAA has adjusted past temperatures to look colder than they were and recent temperatures to look warmer than they were. | We refer to future climate conditions either based on their global average warming level or as a ‘high warming’ scenario . | 1 |
Sea level rise is not going to happen. | Overall, sea level rise is projected to increase the risk of coastal flooding despite the potential slight reductions of marine storms . | 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 | The global mean surface temperature change, or ‘global warming level’ . | 1 |
Volcanoes Melting West Antarctic Glaciers, Not Global Warming | 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 . | 0 |
Unprecedented climate change has caused sea level at Sydney Harbour to rise approximately 0.0 cm over the past 140 years. | Mean air temperature: Across Australia mean temperatures have increased by 1.44°C ± 0.24°C during the period 1910–2019, with most of the warming occurring since 1950 . | 1 |
[T]he raw data, the actual thermometer data[...] shows that the US has been cooling for 80 to 90 years. | Data from field campaigns suggest that a ‘suppression of cooling’ can explain the observed warming . | 1 |
according, again, to the official figures—during this past 10 years, if anything, mean global temperature, average world temperature, has slightly declined | Since the early 2010s, the average wind speed in the world and some parts of Asia has shown signs of increasing , which seems to be an inter-decadal variability. | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | It is very likely that long-term lower-tropospheric warming will be larger in the Arctic than in the global mean. | 1 |
They were going to be gone by now, but now they're setting records | Furthermore, Buchholz et al report a slowdown in global CO decline in 2010–2018 compared to 2002–2010, although the magnitude and sign of this change in the trend varies regionally. | 1 |
Cold weather to grip world as solar minimum to deepen, NASA says | Climate change is not expected to substantially impact global solar insolation and will not compromise the ability of solar energy to support low-carbon transitions . | 0 |
More than 500 scientists and professionals in climate and related fields have sent a 'European Climate Declaration' to the Secretary-General of the United Nations | The European Union declared its ambition to stimulate ‘the creation of a community of climate services application developers and users that matches supply and demand for climate information and prediction’, giving primacy to climate services that are user-driven and science-informed , thus embracing concepts of co-design, co-development and co-evaluation of climate services . | 0 |
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability. | The AR5 did not include an assessment of large-scale temperature estimates for the MH, although it assigned high confidence to the long-term cooling trend over mid- to high-latitudes of the Northern Hemisphere and likely the warmest 30-year period of the past 1.4 kyr based on a quality-controlled, multi-proxy synthesis of paleo-temperature records from 470 terrestrial and 209 marine sites globally indicates that the median GMST of the warmest two-century-long interval was 0.7 °C warmer than 1800–1900 , and was centred around 6.5 ka. | 1 |
They tell us that we are the primary forces controlling earth temperatures by the burning of fossil fuels and releasing their carbon dioxide. | They play a significant role in ocean circulation and absorption of anthropogenic CO2 . | 1 |
'Global warming' is a myth — so say 80 graphs from 58 peer-reviewed scientific papers published in 2017. | Mean air temperature: New literature confirms a continuous warming since the beginning of the 20th century in the majority of the eight sub-regions . | 0 |
The Great Barrier Reef is experiencing the most widespread bleaching ever recorded | Since the mid-20th century, a distinct feature of coral δ11B records relates to ocean acidification trends, albeit having a wide range of values: 0.12–0.40 pH unit in the Great Barrier Reef , 0.05–0.08 pH unit in the north-west Pacific and 0.04–0.09 pH unit in the Atlantic Ocean . | 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. | Last millennium GCM simulations are able to reproduce stronger SAmerM during the 1400–1600 period in comparison with warmer epochs such as the 900–1100 period or the current warming period . | 0 |
unadjusted data suggests that temperatures in Australia have only increased by 0.3 degrees over the past century, not the 1 degree usually claimed | A growing proportion of Australians perceive links between climate change and high temperatures experienced during heatwaves and extremely hot days . | 1 |
Ice berg melts, ocean level remains the same. | The Special Report on the Ocean and Cryosphere in a Changing Climate , with glaciers retreating globally since the mid-20th century . | 1 |
Scientists studying Antarctica sea ice warn a rise in accumulation could spark the next ice age. | A study by Garbe et al suggests that 6°C sustained warming and associated mass loss of about 12 m SLE may be a critical threshold beyond which the ice sheet reorganizes to a new state, leading to large losses from East Antarctica The SROCC assessed that Antarctic mass losses could be irreversible over decades to millennia show that the AIS is always volumetrically smaller when regrowing under a given warming level than when it retreats under the same forcing. | 1 |
Harvard study finds that wind turbines create MORE global warming than the fossil fuels they eliminate | More sophisticated models confirm the local warming effect of wind farms but report that the impact on the regional area is slight and occasional . | 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 | Water temperatures in rivers and lakes have increased over the past century by ~1–3°C in major European rivers . | 1 |
Sea level rise is not going to happen. | Climate change will not affect wind and solar resources to the extent that it would compromise their ability to reduce emissions. | 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. | However, climate change also has positive implications (benefits and opportunities) for certain people and systems, although there are gaps in the literature on these positive effects. | 1 |
according, again, to the official figures—during this past 10 years, if anything, mean global temperature, average world temperature, has slightly declined | Furthermore, Buchholz et al report a slowdown in global CO decline in 2010–2018 compared to 2002–2010, although the magnitude and sign of this change in the trend varies regionally. | 1 |
A windmill could spin until it falls apart and never generate as much energy as was invested in building it. | No robust future changes in wind resources have been identified in China . | 1 |
Cold weather to grip world as solar minimum to deepen, NASA says | The highest increase of temperature of coldest days is projected in Arctic regions, at about three times the rate of global warming (high confidence). | 0 |
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. | The AR5 did not include an assessment of large-scale temperature estimates for the MH, although it assigned high confidence to the long-term cooling trend over mid- to high-latitudes of the Northern Hemisphere and likely the warmest 30-year period of the past 1.4 kyr based on a quality-controlled, multi-proxy synthesis of paleo-temperature records from 470 terrestrial and 209 marine sites globally indicates that the median GMST of the warmest two-century-long interval was 0.7 °C warmer than 1800–1900 , and was centred around 6.5 ka. | 1 |
The models predicted about three times the amount of warming in the world we’ve seen since [1988]. | In most regions, future changes in the intensity of temperature extremes will very likely be proportional to changes in global warming, and up to two to three times larger (high confidence). | 1 |
Discovery Of Massive Volcanic CO2 Emissions Discredits Global Warming Theory | Exceeding a specific remaining carbon budget results in higher global warming. | 1 |
The science is clear, climate change is making extreme weather events, including tornadoes, worse. | Recent studies conclude that climate change can increase the severity and intensity of crises or even trigger disasters, particularly floods, storms, forest and wildfires, and droughts. | 0 |
it’s not a pollutant that threatens human civilization. | There is high confidence that global CO burden is declining since 2000. | 1 |
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability. | However, even though warming from anthropogenic emissions will persist for centuries to millennia and will cause ongoing long-term changes, past emissions alone are unlikely to raise global surface temperature to 1.5°C above 1850–1900 levels. | 0 |
Most likely the primary control knob [on climate change] is the ocean waters and this environment that we live in. | Human influence has been a major driver of regional mean temperature change since 1950 in many sub-continental regions of the world (virtually certain). | 0 |
They tell us that we are the primary forces controlling earth temperatures by the burning of fossil fuels and releasing their carbon dioxide. | Global terrestrial ecosystems comprised a net sink of -1.9 ± 1.1 Gt yr -1 from 2010 to 2019 , mainly due to growth in forests , mitigating ~31% of global emissions from the burning of fossil fuels and LUC In summary, terrestrial ecosystems contain 3000–4000 GtC in vegetation, permafrost and soils, three to five times the amount of carbon in unextracted fossil fuels and 4.4 times the carbon currently in the atmosphere . | 1 |
They were going to be gone by now, but now they're setting records | Since AR5, scarce ground-based measurements have shown that the decline in C2-C3 alkanes ended around 2008 and their abundances are since growing again, which is primarily attributed to increasing North American emissions . | 1 |
The Great Barrier Reef is experiencing the most widespread bleaching ever recorded | The largest portion of this is attributed to tropical cyclones , followed by flooding . | 1 |
Global warming is driving polar bears toward extinction | Reductions of winter severity attributed to anthropogenic climate change are increasing winter algal biomass, and motile and phototropic species, at the expense of mixotrophic species Tropical lakes are prone to loss of deep-water oxygen due to lake warming, with negative consequences for their fisheries and their biodiversity . | 1 |
Earth about to enter 30-YEAR ‘Mini Ice Age’ | Since AR5, new global models are emerging that more rigorously treat ice and Earth structure uncertainty . | 1 |
They tell us that we are the primary forces controlling earth temperatures by the burning of fossil fuels and releasing their carbon dioxide. | 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 |
the bushfires [in Australia] were caused by arsonists and a series of lightning strikes, not 'climate change' | Climate change has contributed to increases in the fire weather season or the probability of fire weather conditions in the Amazon , Australia , Canada , central Asia , East Africa and North America . | 0 |
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. | For the period 2006–2015, observed global mean surface temperature . | 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. | There is still limited evidence on how climate change impacts wind, solar and biomass energy production and their use. | 1 |
Scientists studying Antarctica sea ice warn a rise in accumulation could spark the next ice age. | The Greenland and Antarctic ice sheets are projected to lose mass at an increasing rate throughout the 21st century and beyond . | 1 |
Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] | About 50% of this was below 200°C, about 25% at temperatures 200°C–500°C, and 25% at temperatures of 500°C and above . | 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 | Anthropogenic global warming was estimated to be increasing at 0.2 ± 0.1°C per decade , increased droughts in some regions . | 1 |
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