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But it means a chunk of the rise is coming from elsewhere.
If lowercase, the chunk may be safely copied regardless of the extent of modifications to the file.
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Global warming theory holds that one of the fingerprints of human-induced global warming is more rapid warming in the lower troposphere than at the surface (James Taylor)
The spatial and temporal fingerprint of warming can be traced to increasing greenhouse gas concentrations in the atmosphere, which are a direct result of burning fossil fuels, broad-scale deforestation and other human activity."
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Arctic sea ice has been retreating over the past 30 years.
"What drove the dramatic arctic sea ice retreat during summer 2007?".
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‘With levels of carbon dioxide in the atmosphere consistently breaking new records, the influence of human activities on the climate system has become more and more evident,’ said Taalas.
While ‘climate change’ can be due to natural forces or human activity, there is now substantial evidence to indicate that human activity – and specifically increased greenhouse gas (GHGs) emissions – is a key factor in the pace and extent of global temperature increases.
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While there are direct ways in which CO2 is a pollutant (acidification of the ocean), its primary impact is its greenhouse warming effect.
Since the Industrial Revolution anthropogenic emissions – primarily from use of fossil fuels and deforestation – have rapidly increased its concentration in the atmosphere, leading to global warming.
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no one really knows if last year (2016) was a (global temperature) record
Refers only to the one dataset in which the record was set by the smallest amount, ignoring the data that do not fit the narrative.
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The El Nino Southern Oscillation shows close correlation to global temperatures over the short term.
The studies of historical data show the recent El Niño variation is most likely linked to global warming.
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according, again, to the official figures—during this past 10 years, if anything, mean global temperature, average world temperature, has slightly declined
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.
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However, studies have determined that current technology is sufficient to reduce greenhouse gas emissions the necessary amount, and that we can do so without significant impact on the economy.
As is stated in Article 2 of the Convention, this requires that greenhouse gas (GHG) concentrations are stabilized in the atmosphere at a level where ecosystems can adapt naturally to climate change, food production is not threatened, and economic development can proceed in a sustainable fashion.
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In particular, satellite data demonstrate for the last 17 years, there's been zero warming.
He said there had probably been no global warming since the 1940s, and "Satellite data show no appreciable warming of the global atmosphere since 1979.
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“Amazon near tipping point of switching from rainforest to savannah”
The claim is supported by the study it is based on, but may be misunderstood by readers without sufficient context. The study describes whether a deforested area might recover as savanna rather than rainforest as climate changes. However, the study authors note in their paper that they overlook other components that may impact how a forest responds to climate change, such as the ability for trees to cope with water stress.
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Climate scientist James Hansen: "we have until perhaps 50 years from now," or maybe a little longer "and at that point, we are looking at 10, 20, 30 feet of sea-level rise."
According to the Fourth (2017) National Climate Assessment (NCA) of the United States it is very likely sea level will rise between 30 and 130 cm (1.0–4.3 feet) in 2100 compared to the year 2000.
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Global warming is increasing the risk of heatwaves.
Since the 1950s, droughts and heat waves have appeared simultaneously with increasing frequency.
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But experts say the energy transition needs to speed up drastically to head off the worst effects of climate change.
An abrupt climate change occurs when the climate system is forced to transition to a new climate state at a rate that is determined by the climate system energy-balance, and which is more rapid than the rate of change of the external forcing.
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"Satellite measurements indicate an absence of significant global warming since 1979, the very period that human carbon dioxide emissions have been increasing rapidly.
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.
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Climate changed naturally in prehistoric eras, modern climate change is a naturally occurring phenomenon
Climate change has occurred in the past without human influence. However, this does not indicate that non-human causes are driving modern warming, for which a consensus of scientific evidence shows that greenhouse gas emissions are responsible.
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The human fingerprint in global warming is evident in multiple lines of empirical evidence - in satellite measurements of outgoing infrared radiation, in surface measurements of downward infrared radiation, in the cooling stratosphere and other metrics.
The spatial and temporal fingerprint of warming can be traced to increasing greenhouse gas concentrations in the atmosphere, which are a direct result of burning fossil fuels, broad-scale deforestation and other human activity.
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In the early 2000s, ice shelves began disintegrating in several parts of Antarctica, and scientists realized that process could greatly accelerate the demise of the vastly larger ice sheets themselves.
Concerns have been raised that disruption of ice shelves may result in increased glacial outflow from the continental ice mass.
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Measurements of carbon isotopes and falling oxygen in the atmosphere show that rising carbon dioxide is due to the burning of fossil fuels and cannot be coming from the ocean.
Ocean acidification is the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide (CO 2) from the atmosphere.
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Coral bleaching has devastated 93% of the Great Barrier Reef
Five Great Barrier Reef species of large benthic corals were found bleached under elevated temperatures, affirming that benthic corals are vulnerable to thermal stress.
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At that time, Hansen also produced a model of the future behavior of the globe’s temperature, which he had turned into a video movie that was heavily shopped in Congress.
Hansen compared the corrected troposphere temperatures with the results of the published GISS model, and concluded that the model is in good agreement with the observations, noting that the satellite temperature data had been the last holdout of global warming denialists, and that the correction of the data would result in a change from discussing whether global warming is occurring to what is the rate of global warming, and what should be done about it.
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“Natural variation explains a substantial part of global warming observed since 1850;” no statistical evidence that global warming is intensifying natural disasters, or making them more frequent.
Natural (non-human) drivers of climate change have been mostly stable since the onset of modern warming and all the available scientific evidence implicates human greenhouse gas emissions as the primary culprit. Scientific evidence also indicates that climate change is contributing to intensified or more frequent natural disasters such as heatwaves, drought and heavy rainfall.
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While transient weather variability is playing a key role here, the widespread record warmth across the U.S. so far this year is part of a long-term trend toward more warm temperature records versus cold ones.
Global surface temperature is subject to short-term fluctuations that overlie long-term trends, and can temporarily mask or magnify them.
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Once natural influences, in particular the impact of El Niño and La Niña, are removed from the recent termperature record, there is no evidence of a significant change in the human contribution to climate change.
Scientists have determined that the major factors causing the current climate change are greenhouse gases, land use changes, and aerosols and soot.
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In April the extent of Arctic sea ice was back to where it was in April 13 years ago
Increased melting of Arctic ice since 2007 enables ships to travel the Northwest Passage for some weeks in summertime, avoiding the longer routes via the Suez Canal or the Panama Canal.
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“There is now less sea ice on Earth than at any time on record.
From October to June the surface is usually covered with sea ice in the Labrador Sea, Denmark Strait, and Baltic Sea.
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Measurements indicating that 2017 had relatively more sea ice in the Arctic and less melting of glacial ice in Greenland casts scientific doubt on the reality of global warming.
The Arctic is affected by current global warming, leading to Arctic sea ice shrinkage, diminished ice in the Greenland ice sheet, and Arctic methane release as the permafrost thaws.
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90 per cent of the worlds coral reefs will disappear in the next 35 years due to coral bleaching induced by global warming, pollution and over-development.
Clarification required It is not certain that these corals will necessarily bedeadby 2050, but instead are likely to beunsustainable, i.e., susceptible to dying after heat stress events.Somewhat misleading in that it might be understood as if the reef (the platform of rock and mineral skeletons on which corals and other species live) will physicallydisappear, while in reality the statement should be about thedeathof corals.
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When the PDO last switched to a cool phase, global temperatures were about 0.4C cooler than currently.
During a "warm", or "positive", phase, the west Pacific becomes cooler and part of the eastern ocean warms; during a "cool" or "negative" phase, the opposite pattern occurs.
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the concentration of carbon dioxide in Earth’s atmosphere has climbed to a level last seen more than 3 million years ago — before humans even appeared on the rocky ball we call home
The concentration of carbon dioxide in the atmosphere is increasing several parts per million each year, and has already reached levels not seen since much warmer climates in the geologic past.
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"The solubility of carbon dioxide in water is listed in the Handbook of Chemistry and Physics as a declining function of temperature. ...
The following table lists some temperature dependencies: Solubility of permanent gases usually decreases with increasing temperature at around room temperature.
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CO2 is a plant nutrient...it’s not a pollutant that threatens human civilization. If CO2 was so terrible for the planet, then installing a CO2 generator in a greenhouse would kill the plants.
CO2can increase plant growth in a greenhouse, but the argument that CO2is not harmful to the planet because plants don’t die is flawed. To assess the overall impact of CO2emissions on “human civilization”, effects on ecosystems and human societies should also be taken into account.
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(Multiplying .95 by itself 15 times yields 46.3 percent.)”
1000   g   NO x 1 kg   NO x × 46   kg   NO x 1   kmol   NO x × 1   kmol   NO x 22.414   m 3   NO x × 10   m 3   NO x 10 6   m 3   gas × 20   m 3   gas 1   minute × 60   minute 1   hour = 24.63   g   NO x hour {\displaystyle {\frac {1000\ {\ce {g\ NO}}_{x}}{1{\cancel {{\ce {kg\ NO}}_{x}}}}}\times {\frac {46\ {\cancel {{\ce {kg\ NO}}_{x}}}}{1\ {\cancel {{\ce {kmol\ NO}}_{x}}}}}\times {\frac {1\ {\cancel {{\ce {kmol\ NO}}_{x}}}}{22.414\ {\cancel {{\ce {m}}^{3}\ {\ce {NO}}_{x}}}}}\times {\frac {10\ {\cancel {{\ce {m}}^{3}\ {\ce {NO}}_{x}}}}{10^{6}\ {\cancel {{\ce {m}}^{3}\ {\ce {gas}}}}}}\times {\frac {20\ {\cancel {{\ce {m}}^{3}\ {\ce {gas}}}}}{1\ {\cancel {\ce {minute}}}}}\times {\frac {60\ {\cancel {\ce {minute}}}}{1\ {\ce {hour}}}}=24.63\ {\frac {{\ce {g\ NO}}_{x}}{\ce {hour}}}} After canceling out any dimensional units that appear both in the numerators and denominators of the fractions in the above equation, the NOx concentration of 10 ppmv converts to mass flow rate of 24.63 grams per hour.
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Rising CO2 increases atmospheric water vapor, which makes global warming much worse.
Indirectly, human activity that increases global temperatures will increase water vapor concentrations, a process known as water vapor feedback.
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We note that the Earth has never in its history had a quasi-stable state that is around 2C warmer than the preindustrial and suggest that there is substantial risk that the system, itself, will ‘want’ to continue warming because of all of these other processes – even if we stop emissions,” she said.
The scientists raise the possibility that even if greenhouse gas emissions are substantially reduced to limit warming to 2 degrees, that might be the "threshold" at which self-reinforcing climate feedbacks add additional warming until the climate system stabilizes in a hothouse climate state.
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HAARP may deliberately create destruction on a global scale, causing earthquakes, cyclones, flooding, snowstorms, around the world; HAARP may be attacking the citizens of the world telepathically, influencing thoughts with low frequency vibrations
There is no scientific evidence provided to support the claims made in the Gaia article about HAARP’s ability to cause natural disasters or control human behaviors. The Gaia article cited an article by the U.K. tabloid The Express and another Gaia article as supporting evidence for the natural disasters claim, but these are not scientific or peer-reviewed sources. The claim that HAARP can control minds is purportedly supported by a “leaked classified government file”, but the article provided no direct link or reference to this file.
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While there are many drivers of climate, CO2 is the most dominant radiative forcing and is increasing faster than any other forcing.
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.
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Many of the world’s coral reefs are already barren or in a state of constant decline.
Aquaculture is showing promise as a potentially effective tool for restoring coral reefs, which have been declining around the world.
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The ice caps were going to melt. They were going to be gone by now, but now theyre setting records
The term “ice caps” makes it unclear what President Trump intends to refer to. An ice cap is one technical category of glacial ice on land, not a catch-all term for polar sea ice and glaciers..
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"by the 2001 [IPCC] climate assessment...the Medieval Warm Period had been ingeniously wiped out.
The IPCC Third Assessment Report from 2001 then summarized research: "evidence does not support globally synchronous periods of anomalous cold or warmth over this time frame, and the conventional terms of 'Little Ice Age' and 'Medieval Warm Period' appear to have limited utility in describing trends in hemispheric or global mean temperature changes in past centuries."
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During the last hundred years the temperature is increased about 0.1°C because of carbon dioxide. The human contribution was about 0.01°C.
The authors argument claims a correlation between cloud cover/relative humidity and global temperature proves that the former caused the latter without investigating whether they have the relationship backwards.
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In recent decades this warming has been accompanied by a constant rise in the sea level and, it would appear, by an increase of extreme weather events, even if a scientifically determinable cause cannot be assigned to each particular phenomenon.
The effects of global warming include rising sea levels, regional changes in precipitation, more frequent extreme weather events such as heat waves, and expansion of deserts.
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The new research showed that [oxygen isotopes in foraminifera] can change
Such a pattern seems to fit the information on climate change found in oxygen isotope cores.
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Plant stomata show higher and more variable CO2 levels.
The CO2 fertiliser effect has been greatly overestimated during Free-Air Carbon dioxide Enrichment (FACE) experiments where results show increased CO2 levels in the atmosphere enhances photosynthesis, reduce transpiration, and increase water use efficiency (WUE).
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The rate of renewable energy installations in the EU in 2018 was less than half the maximum level achieved in 2010.
Although there is significant variation in national targets, the average is that 22% of electricity should be generated by renewables by 2010 (compared to 13,9% in 1997).
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There may have been regions of Greenland that were 'greener' than today
"Is Iceland Really Green and Greenland Really Icy?"
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The Obama administration's "own Environmental Protection Agency" has said its Clean Power Plan "will have a marginal impact on climate change."
The Clean Power Plan was an Obama administration policy aimed at combating anthropogenic climate change (global warming) that was first proposed by the Environmental Protection Agency (EPA) in June 2014.
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The interesting point is that it also seems each time they come across a new dataset it is simply replaced.
It was gradually replaced by an Old Norse borrowing, þeir (nominative plural masculine of the demonstrative, which acted in Old Norse as a plural pronoun), until it was entirely replaced in around the 15th century in Middle English.
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What they find is sea level rise has been steadily accelerating over the past century.
However scientists have found that ice is being lost, and at an accelerating rate.
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The IPCC (2013), USGCRP (2017), and USGCRP (2018) indicate that it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-twentieth century.
The scientific consensus as of 2013[update], as stated in the IPCC Fifth Assessment Report, is that it "is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century".
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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.
"Impacts [of climate change] will very likely increase due to increased frequencies and intensities of some extreme weather events".
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The heat extremes were especially pervasive in the Arctic, with temperatures in the fall running 20 to 30 degrees Fahrenheit above normal across large stretches of the Arctic Ocean.
As recently as 55 million years ago, during the Paleocene–Eocene Thermal Maximum, the region reached an average annual temperature of 10–20 °C (50–68 °F).
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The Business Council, the Minerals Council, the Australian Industry Group, the Australian Chamber of Commerce and Industry, have all called for the [carbon] tax to be repealed.
"Carbon tax is gone: Repeal bills pass the Senate".
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Goklany has argued that the rising level of carbon dioxide in the earth’s atmosphere ‘is currently net beneficial for both humanity and the biosphere generally.”
Both have the same net effect, but for achieving carbon dioxide concentration levels below present levels, carbon dioxide removal is critical.
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cold deaths actually occur during moderate temperatures
The Southwestern United States had near high temperatures from September 26 to October 2, and even hotter than that in some regions.
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No known natural forcing fits the fingerprints of observed warming except anthropogenic greenhouse gases.
The largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide.
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This is called the "atmospheric greenhouse effect", and without it the Earth's surface would be much colder.
Without the Earth's atmosphere, the Earth's average temperature would be well below the freezing temperature of water.
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Unprecedented climate change has caused sea level at Sydney Harbour to rise approximately 0.0 cm over the past 140 years.
Because tides rise and fall along the coast, a pair of photos taken at different tide phases cannot show you whether long-term sea level rise has occurred.
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The corals may save themselves, as many other creatures are attempting to do, by moving toward the poles as the Earth warms, establishing new reefs in cooler water.”
One way, however, that corals "might escape ocean warming, is to migrate into cooler waters."
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Antarctica is gaining land-based ice, according to a new study by NASA scientists published in the Journal of Glaciology
[1] In their latest study (September 20, 2007) NASA researchers have confirmed that Antarctic snow is melting farther inland from the coast over time, melting at higher altitudes than ever and increasingly melting on Antarctica's largest ice shelf.
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I would not agree that carbon dioxide is a primary contributor to the global warming that we see.
Cumulative anthropogenic (i.e., human-emitted) emissions of CO 2 from fossil fuel use are a major cause of global warming, and give some indication of which countries have contributed most to human-induced climate change.
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You're going to have an increase in the amount of ice in Antarctica because of global warming.
These include the large-scale singularities such as the melting of the Greenland and West Antarctic ice sheets, and changes to the AMOC.
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This increases confidence in other peer-reviewed research predicting sea level rise of 80cm to 2 metres by 2100.
"The projections and results presented in several peer-reviewed publications provide evidence to support a physically plausible GMSL rise in the range of 2.0 meters (m) to 2.7 m, and recent results regarding Antarctic ice-sheet instability indicate that such outcomes may be more likely than previously thought."
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CO2 increase is natural, not human-caused.
It is likely that anthropogenic (i.e., human-induced) warming, such as that due to elevated greenhouse gas levels, has had a discernible influence on many physical and biological systems.
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No one ever says it, but in many ways global warming will be a good thing
It is a global good, so even if a large nation decreases it, that nation will only enjoy a small fraction of the benefit of doing so.
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While volcanic eruptions are natural events, it was the timing of these that had such a noticeable effect on the trend
The amount of gas and ash emitted by volcanic eruptions has a significant effect on the Earth's climate.
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The corals may save themselves, as many other creatures are attempting to do, by moving toward the poles as the Earth warms, establishing new reefs in cooler water.”
In the modern thermohaline circulation, warm tropical water becomes colder and saltier at the poles and sinks (downwelling or deep water formation) that occurs at the North Atlantic near the North Pole and the Southern Ocean near the Antarctic Peninsula.
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As a result, the polar ice caps were quite likely more extensive than they had been since at least the 1920s.
In the terminology of glaciology, ice age implies the presence of extensive ice sheets in both northern and southern hemispheres.
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The warming trend is the same in rural and urban areas, measured by thermometers and satellites, and by natural thermometers.
For example, urban and rural trends are very similar.
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UAH atmospheric temperatures prove climate models and/or surface temperature data sets are wrong.
Specifically, surface data showed substantial global-average warming, while early versions of satellite and radiosonde data showed little or no warming above the surface.
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describes a world of worsening food shortages and wildfires, and a mass die-off of coral reefs as soon as 2040
During this period, 19 percent of coral reefs worldwide were lost, and 60 percent of the remaining reefs are at immediate risk of being lost.
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There is no evidence, other than models, that human CO2 emissions drive climate change and abundant evidence that the Sun, coupled with natural climate cycles, drives most, if not all, of recent climate changes
The Climate Model Intercomparison Project 5 (CMIP5) suite of climate models discussed by May have been shown to reliably reproduce historical trends in climate without evidence of a warming bias.
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warmer oceans have also begun to destabilize glaciers in Greenland and Antarctica
"A tipping point in refreezing accelerates mass loss of Greenland's glaciers and ice caps".
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Pluto's climate change over the last 14 years is likely a seasonal event.
As a result, Neptune experiences similar seasonal changes to Earth.
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Models and direct observations find that CFCs only contribute a fraction of the warming supplied by other greenhouse gases.
The strength of CFC absorption bands and the unique susceptibility of the atmosphere at wavelengths where CFCs (indeed all covalent fluorine compounds) absorb creates a “super” greenhouse effect from CFCs and other unreactive fluorine-containing gases such as perfluorocarbons, HFCs, HCFCs, bromofluorocarbons, SF6, and NF3.
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This makes it clear that this time around humans are the cause, mainly by our CO2 emissions.
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.
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While methane is a more potent greenhouse gas than CO2, there is over 200 times more CO2 in the atmosphere.
Methane in the Earth's atmosphere is a strong greenhouse gas with a global warming potential (GWP) 104 times greater than CO2 in a 20-year time frame; methane is not as persistent a gas as CO2 (assuming no change in carbon sequestration rates) and tails off to about GWP of 28 for a 100-year time frame.
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Early 20th century warming is due to several causes, including rising CO2.
CO2 emissions are continuing to rise due to the burning of fossil fuels and land-use change.
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Ever since 2012, scientists have been debating a complex and frankly explosive idea about how a warming planet will alter our weather — one that, if it’s correct, would have profound implications across the Northern Hemisphere and especially in its middle latitudes
The letter goes on to warn of predicted impacts on the United States such as sea level rise and increases in extreme weather events, water scarcity, heat waves, wildfires, and the disturbance of biological systems.
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CO2 does not cause climate change, it RESPONDS to it [...] temperature always changes first, and CO2 follows
A lag between the initiation of past warming due to other factors and rising CO2 does not mean mean that CO2 cannot have caused temperature to increase further.
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Hypothetically, an increasing solar magnetic field could deflect galactic cosmic rays, which hypothetically seed low-level clouds, thus decreasing the Earth's reflectivity and causing global warming.
This effect also causes droplets to be of more uniform size, which reduces the growth of raindrops and makes clouds more reflective to incoming sunlight.
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A video shows Koko the gorilla spontaneously using sign language to issue a warning about climate change.
Koko was reported to use meta-language, being able to use language reflexively to speak about language itself, signing "good sign" to another gorilla who successfully used signing.
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“It seems self-evident that rising sea levels will reduce land area.
The effects of global warming include rising sea levels, regional changes in precipitation, more frequent extreme weather events such as heat waves, and expansion of deserts.
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Rather than 100 years of unprecedented global warming as predicted by IPCC, the global temperatures have leveled off and we seem to be heading for cooler weather."
"Robust findings" of the Synthesis report include: "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".
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Germany managed to increase its use of renewables and its output of carbon dioxide at the same time -- because it resorted to cheap coal to keep the lights on at a price its people could afford.
In particular, the use of renewable energy for production of fuels from CO 2 (such as methanol) is attractive as this could result in fuels that could be easily transported and used within conventional combustion technologies but have no net CO 2 emissions.
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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.
The data shows that recent warming has surpassed anything in the last 2,000 years.
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There seems to be evidence for a link between solar activity and water levels.
There is considerable evidence that over the very recent period of the last 100–1000 years, the sharp increases in human activity, especially the burning of fossil fuels, has caused the parallel sharp and accelerating increase in atmospheric greenhouse gases which trap the sun's heat.
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We know that humans have most flourished during times of, what, warming trends. I think there are assumptions made that because the climate is warming, that that is necessarily a bad thing.
There is no basis to Pruitts claim that humans have flourished during past periods of similarly rapid warming. The last 10,000 years, during which human civilization has developed, have seen stable climate conditions.
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“The most recent prediction of the Intergovernmental Panel on Climate Change (IPCC) is that seas will rise by 60 to 90 centimetres this century.
If emissions remain very high, the IPCC projects sea level will rise by 52–98 cm (20–39 in).
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Deforestation has made humans more vulnerable to pandemics
Scientists have established direct and indirect links between deforestation and the emergence and spread of some infectious diseases.
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The report, published in the journal Nature Geoscience on September 18, acknowledges that most of the models of warming trends failed to predict the ‘slowdown’ in warming post-2000, resulting in less pronounced warming than predicted and thus more room in the CO2 ‘emissions budget’ for the coming decades.
They judge that global mean surface air temperature has increased by 0.3 to 0.6 °C over the last 100 years, broadly consistent with prediction of climate models, but also of the same magnitude as natural climate variability.
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“The Northern Hemisphere jet stream […] flow is stronger when that temperature difference is large.
The Westerlies and associated jet stream within the Mid-Latitudes can be particularly strong, especially in the Southern Hemisphere, due to the temperature difference between the tropics and Antarctica, which records the coldest temperature readings on the planet.
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Final data for 2016 sea level rise have yet to be published.
Between 1900 and 2016, the sea level rose by 16–21 cm (6.3–8.3 in).
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Measurements indicating that 2017 had relatively more sea ice in the Arctic and less melting of glacial ice in Greenland casts scientific doubt on the reality of global warming.
This acceleration is due mostly to human-caused global warming, which is driving thermal expansion of seawater and the melting of land-based ice sheets and glaciers.
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They do not make a definitive attribution statement, but the data are consistent with and strongly suggestive of human-driven warming as a root cause of the oxygen decline.’”
They reaffirmed their 2007 position statement on climate change "based on the large body of scientific evidence that Earth's climate is warming and that human activity is a contributing factor.
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Latest IPCC Reports (AR5) have shown global mean temperature forecasts from the 2005 IPCC report exceeded actual readings.
Compared to the previous report, the lower bounds for the sensitivity of the climate system to emissions were slightly lowered, though the projections for global mean temperature rise (compared to pre-industrial levels) by 2100 exceeded 1.5 °C in all scenarios.
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Greenhouse gases emitted into the ocean are causing more holes in the ozone layer … “the ozone layer has holes in it causing global temperature to rise”
Chlorofluorocarbons, halons, and other ozone-depleting substances cause holes in the stratospheric ozone layer, not the greenhouse gas CO2, which was referred to in the post by stating it is emitted into the ocean. Ozone-depleting substances were limited in 1987, preventing the formation of more and deeper holes in the ozone.
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Unprecedented climate change has caused sea level at Sydney Harbour to rise approximately 0.0 cm over the past 140 years.
Between 1993 and 2017, the global mean sea level rose on average by 3.1 ± 0.3 mm per year, with an acceleration detected as well.
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18 proxies tell us the world was the same or warmer 1,000 years ago.
The SPM statement in the IPCC TAR of 2001 had been that it was "likely that, in the Northern Hemisphere, the 1990s was the warmest decade and 1998 the warmest year" in the past 1,000 years.
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It also concludes that current northern hemisphere surface air temperatures are significantly higher than during the peak of the Medieval Warm Period (MWP).
He wrote that this graph "asserts that temperatures during the Medieval Warm Period were higher than those of today", and described climate changes as due to solar variation.
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