Questions tagged [climate-change]

Climate change is a significant and lasting change in the statistical distribution of weather patterns. In public discourse, often used as a shorthand for the effects of anthropogenic global warming.

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823 views

Does the Kiri Tree reduce carbon dioxide emissions ten times more than the average tree?

The About section of the Kiri Tree website says: The tree is known to reduce carbon dioxide (CO2) emissions ten times more than the average tree and also in return produce ten times more oxygen ...
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Did NOAA publish a fake map with temperature data it doesn't have?

At the Deplorable Climate Science Blog, he claims that this map was published: When this is the reality The map above (the first map) is fake. NOAA has almost no temperature data from Africa, and ...
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Will plant-life on Earth end due to too little CO2?

According to a 2013 Daily Mail article : greater evaporation and chemical reactions with rainwater will take away more and more carbon dioxide. In less than a billion years, its levels will ...
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Is Donald Trump forcing the EPA to take down all climate change information?

According to the Independent article Donald Trump orders Environmental Protection Agency to delete all climate change information from its website The Trump administration is forcing the ...
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475 views

Have climate models in the 80's and 90's accurately predicted today's climate? [closed]

Climate models seem to pretty useful tools for predicting future climate. Considering constant refinement of the models and Moore's law, it is conceivable that today's climate models are far more ...
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Did Donald Trump say that “global warming was a hoax invented by the Chinese”?

In the Presidential debate of 26th September, Hillary Clinton claimed that "Donald Trump said that global warming was a hoax invented by the Chinese" . Trump replied several times "I did not say that"....
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Is global warming impossible because of CO₂'s dilution?

Gary Novak argues (e.g. in his book, Science Errors and on his web site) that climate models are incorrect, because of a missing "dilution" factor. Climatologists skipped over the dilution factor. ...
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Is this refutation of Climate Change scientifically valid? [closed]

From this article. I don't like Breitbart as a source but I try hard to make sure I don't dismiss entirely their claims without reason. I'd like help interpreting their claims. A German professor ...
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Do 40% of U.S. Americans think that global warming is unproblematic since Christ will return soon?

Noam Chomsky states in a recent interview: One of the difficulties in raising public concern over the very severe threats of global warming is that 40 percent of the US population does not see why ...
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Is half of the climate change in the past 110 years due to natural variation in the Sun's output?

A NASA website says: Of the many trends that appear to cause fluctuations in the Sun’s energy, those that last decades to centuries are the most likely to have a measurable impact on the Earth’s ...
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Are we in a low CO2 period, compared to the last 590 million years?

In 2012 Burt Rutan, the aircraft designer, posted these slides summarizing his take on global warming/climate change. Slide 14 is In the big picture we are now in a low CO2 period. The 20th ...
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Will most tropical and temperate areas be uninhabitable with a 5 degree increase in temperature?

I've seen this image circulated on message boards a few times, and I'm wondering if it has any scientific basis. Red is uninhabitable land, and green is all that is left after a global rise of 5°...
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Will global warming reduce available oxygen?

I saw a friend "like" this news article on Facebook which claims that phytoplankton would stop oxygen production: "If the world’s oceans warmed by 6 degrees Celsius—a realistic possibility if ...
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Does global warming even exist? [duplicate]

The controversy around the existence of global warming is very prominent, and hot debate. There are as many people claiming that global warming doesn't exist, as there are claiming that it exists. ...
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Has there been no global warming for 18 years? [duplicate]

I have heard Ted Cruz and other people multiple times say that there has been no global warming for the past 18 years. They usually pull this chart (which has gone viral, and can be found on dozens ...
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Are annual contributions to carbon in the atmosphere due to human activities increasing by 6% per annum?

I recently began reading the 2014 book, The Sixth Extinction: An Unnatural History by Elizabeth Kolbert. When speaking about the amount of carbon that is added to the atmosphere by human activities (...
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Is AGW a scientific theory? [duplicate]

I believe the anthropogenic global warming is a fact, and that the scientific community has reached a consensus about it, but may we call it a (proved) scientific theory? This question was also done ...
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Is Antarctica gaining or losing ice?

A recent NASA study says Antarctica is gaining ice: Ice, Cloud and land Elevation Satellite (ICESat) data (2003–08) show mass gains from snow accumulation exceeded discharge losses by 82 ± 25 Gt a–...
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Did Exxon suppress its own scientific results on climate change?

Some environmentalists have recently claimed that Exxon did research on global warming and then suppressed the results. For example, Bill Mckibben writes this in the Guardian: Exxon knew all that ...
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Is there one climate model equation or are there many? [closed]

I was reading an article referenced by the No Agenda show on Dr. David Evans of Australia pointing out a flaw in the equation now, either I'm thinking of this too simplistically, he is thinking about ...
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Has the historical average temperature stayed the same since 1980 [closed]

Thanks to Wolfram Alpha we have access to a great deal of historical temperature data. One would think that through Wolfram Alpha one would see a visual trend in temperature upwards as it has ...
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Do the Alberta tarsands/oilsands potentially contribute significantly to greenhouse gas emissions? [closed]

According to 15 ways Alberta doesn’t get the credit it deserves on the Environment: The [Canadian/Albertan] oilsands contribute less than 0.15% of global GHG emissions, a number that has been ...
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Chemtrails : A dangerous govt. plot or just another debunked theory? [duplicate]

According to countless chemtrail research theories , trails left in the sky by high-flying govt. aircraft are dangerous chemical or biological agents deliberately sprayed for reasons undisclosed to ...
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Are current climate models too vague to be physically or scientifically meaningful? [closed]

In a recent article on the climate skeptic site Watts Up With That backed up with a published paper in Energy and Environment, Pat Frank argues that current climate simulation models are ...
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581 views

How are airplane contrails linked to climate change?

There are a wide range of opinions and articles on this question, and here are some excerpts from a blog on the point Artificial Weather Revealed by Post 9-11 Flight Groundings: In the August 2002 ...
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Have 95% of climate models over-forecast the global warming trend? [duplicate]

From Top Advisor To Australian Gov't Says Climate Change is a UN Conspiracy (slashdot.org) and Climate change a UN-led ruse, says Tony Abbott's business adviser Maurice Newman (The Sydney Morning ...
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How long does it take expanded Antarctic sea ice to reach New Zealand? [closed]

According to http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/seaice.recent.antarctic.png the Southern sea ice anomaly is currently +1.2*10^6 km^2. I'm calculating how long does it take this expansion ...
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Did Willie Soon fail to disclose a conflict of interest with the fossil fuel lobby?

Willie Soon recently co-authored a paper that criticised the big computer models used for many projections of future climate (which in turn have fed the IPCC process that drive consensus climate ...
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Did global warming exacerbate the Syrian conflict?

Newspapers have recently reported that research shows that Global Warming can now be assigned as a major contributor to the ongoing conflict in Syria. For example, The Independent: Climate change ...
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Are polar bears doing well despite a reduction in sea ice?

From Skeptical Science and many other sources: In conclusion, the reason polar bears have been classed as threatened comes from the impacts of future climate change on the bears’ habitat. Current ...
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Was 2014 the hottest year on record? [closed]

When the numbers were counted several prominent observers of climate claimed that the year 2014 was the hottest ever. For example, Scientific American reported: It’s official: 2014 has taken the ...
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1answer
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Did someone using a private jet tell Americans their expectations are too high?

From twitter, a tweet that's going viral, including among climate change skeptics (action against climate change is being discussed at Davos): The cognitive dissonance in the first & last ...
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Is animal agriculture responsible for more greenhouse gas emissions than transportation?

Animal agriculture is responsible for 18 percent of greenhouse gas emissions, more than all transportation combined. By http://www.cowspiracy.com/facts/ from Fao.org. Spotlight: Livestock impacts on ...
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Are Easterbrook's oxygen-isotope paleo-temperature reconstructions credible?

In this video of a presentation given at a climate-skeptic Heartland Institute conference, Don Easterbrook presents his view of recent climate history. He compares his own projections of future ...
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Do RSS satellite samples show no warming since September 1996?

On the Climate Depot is a claim that Global Temperature Standstill Lengthens: No global warming for 17 years 10 months – Since Sept. 1996 (214 months) and this graph of RSS satellite data is ...
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345 views

Did global warming cause temperatures to drop because of polar vortex episodes?

On the Environmental Defense Fund website, this claim is made: This past winter’s polar vortex episode was caused by a persistent high pressure system that developed over western Canada, which ...
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1answer
167 views

Do higher CO₂ concentrations increase plant well-being?

Dr. Craig Idso claims increased levels of CO2 reduce the negative effects of a number of plant stresses including: high salinity, low light, high and low temperatures, insufficient water, air ...
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Did both higher temperatures and an ice age exist at CO₂ levels ten times the present?

The Climate Depot quotes Dr. Patrick Moore: When modern life evolved over 500 million years ago, CO₂ was more than 10 times higher than today, yet life flourished at this time. Then an Ice Age ...
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Has the climate not warmed in 17 years? [duplicate]

Some of the rhetoric around AGW denial/skepticism is that the Earth hasn't warmed in 10/16/17 years. For example: http://www.forbes.com/sites/jamestaylor/2013/09/26/as-its-global-warming-narrative-...
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Is there more global sea ice than 35 years ago?

On Mail Online, it is claimed: In fact, across the globe, there are about one million square kilometres more sea ice than 35 years ago, which is when satellite measurements began. Is that true? ...
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Was July 1936 the hottest month on record for mainland USA?

In July 2012, the US National Oceanic and Atmospheric Administration (NOAA) reported. The average temperature for the contiguous U.S. during July was 77.6°F, 3.3°F above the 20th century average, ...
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1answer
529 views

Does temperature drive CO₂?

The blog THE HOCKEY SCHTICK claims that "temperature drives CO2 levels, not man-made CO2". The paper "Atmospheric verification of anthropogenic CO2 emission trends" is cited as proof. The claim is ...
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Does Beck's chemical analysis of CO₂ discredit the Law Dome ice core findings?

On RealC02 summarizing Ernst-Georg Beck's work, this history of CO₂ levels are posted for the 19th century: SkepticalScience, on its "How reliable are CO₂ measurements?" page says "CO₂ levels are ...
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Did fertilising the ocean with 100 tons of iron sulphate increase the salmon catch by over 100,000 tons?

In July 2012 American businessman Russ George, dumped 100 tonnes of iron in the ocean off British Columbia to encourage plankton growth and thus increase salmon stocks (link). It is now claimed that ...
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Does unadjusted NASA climate data show no long-term global warming?

The Real Science blog by "Steven Goddard" claims that NASA have altered their data in the USA and other countries to show global warming. Right after the year 2000, NASA and NOAA dramatically ...
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Is Matt Ridley's assertion that the most extreme of the IPCC climate projections is based on very implausible assumptions correct?

Matt Ridley, the science writer who is often grouped with skeptics of warming and denialists despite asserting: man-made climate change is real but not likely to do much harm, let alone prove to be ...
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Were Alpine glaciers much smaller in Roman times?

In a critique (or possibly a rant) against modern climate science, Swiss geologist Christian Schlüchter makes a very specific claim that Alpine glaciers were essentially non-existent (or very much ...
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volcanic CO₂ emission estimates increasing [closed]

I just read that estimates of CO₂ emissions form volcanos has increased from 100Mt to 600Mt/ year in the last decade or so. While still only a fraction of the natural cycle, in what ways does this ...
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Does Carbon Dioxide mix well in the atmosphere?

At Skeptical Science, they explain: Mauna Loa is often used as an example of rising carbon dioxide levels because its the longest, continuous series of directly measured atmospheric CO₂. The reason ...
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Has anthropogenic climate change been disproven? [duplicate]

Some scientists attribute non-terrestrial causes for climate change. Are they correct? For example, this scientist attributes current weather extremes to solar activity, moon orbit cycles and ...