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Questions tagged [climate-change]

Questions about changes of the climate system, including questions about global warming.

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12
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3answers
2k views

Is there any evidence for higher air pressures in the geological past?

I was curious about how the Earth's overall air pressure has varied over time, and tried to take a look around the internet. However, Google pops up a lot of sites with questionable science proposing ...
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1answer
735 views

For what percentage of the earth's history has there been permanent ice?

Wikipedia comments here that "Permanent ice is actually a rare phenomenon in the history of the Earth, occurring only during the 20% of the time that the planet is under an icehouse effect." A "...
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2answers
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When will glaciation resume? Has global warming delayed return to global cooling?

As far as I understand, we are currently living in the Holocene, an interglacial period of the Quaternary glaciation, i.e. the current ice age that has so far lasted 2.6 million years. The Holocene ...
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1answer
1k views

Can climate change cause earthquakes, tsunamis, or volcanic eruptions?

Different scientists have brought forth a theory that climate change can cause earthquakes, tsunamis and volcanic eruptions. For example: Professor Bill McGuire of University College London in his ...
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0answers
134 views

Will global climate change alter the interannual and/or intraseasonal variance of temperature and/or precipitation?

A quick skim of the regional chapters in AR5 shows predicted changes to average temperature and precipitation. If I understand (in rough terms) the modelling methodologies used, a variety of models (...
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4answers
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Why do we recycle paper?

Recycling metal and some plastics makes complete sense to me. Why bury something in a landfill that you'll have to find and dig up more of later. What I don't get is why we recycle paper products, ...
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6answers
4k views

If water is a renewable resource, why is there water scarcity?

Water is a renewable resource, renewed by the water cycle. If we use water too quickly, water should get evaporated and come down again as precipitation. So, Why is there water scarcity if water ...
11
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3answers
4k views

How long to melt all the polar ice?

The answers to this question say that the sea level will rise 66m if all the polar ice, etc, melts. How long will this take? Transporting incredible amounts of heat energy to the poles and injecting ...
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2answers
1k views

“The world will start COOLING DOWN in 2017”?

There's a story going around the low-grade news factories that one Dr. David Evans has predicted that the world will start cooling down in 2017. One source reports: He says fundamental flaws in how ...
11
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1answer
836 views

Oscillations in the Keeling curve?

I'm having a slightly difficult time understanding the Keeling curve, pictured here: I understand that carbon dioxide (ppm) is increasing with respect to time, but why is there an oscillation between ...
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3answers
3k views

How will climate change affect the extent of the Sahara Desert?

Will it increase the size of it? (perhaps by increasing the extent of the Hadley Cells)?
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422 views

What are some near term effects of Global Warming?

Many of the predictions of Global Warming models are dated in the range of ~100 years or more from the present. I'm wondering if any models or data provide predictions for the more immediate future, ...
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1answer
219 views

Which percentage of $\text{CO}_2$ emissions are human made emissions?

I was watching a science/myth Youtube channel (science mixed with a lot of speculative/fantasy content) with 2M+ followers and the Youtuber said volcano made emissions were higher than human made ...
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2answers
296 views

Has the number of natural disasters per year increased significantly in the years since human-caused climate change started?

Human-caused global warming has had an increasingly significant effect on the earth since the industrial era began. Since the beginning of the industrial era, has there been a significant increase in ...
11
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1answer
599 views

What is a reasonable forecast of sea level in 2100?

The IPCC 2013 Physical Science Basis Report says 0.4m - 0.6m. That is somewhat dated and now http://www.atmos-chem-phys-discuss.net/15/20059/2015/acpd-15-20059-2015.html seem to have contested it. ...
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1answer
417 views

What would happen if we could revert $\mathrm{CO}_2$ production but took it too far?

So recently, scientists managed to produce fuel basically out of thin air (water, air and sunlight). And in a discussion I had with a friend, the question came up, what would happen if you took that ...
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3answers
512 views

Is increase in atmospheric $\mathrm{CO}_2$ concentration affecting Earth's atmospheric pressure?

It's well known that the $\mathrm{CO}_2$ levels around the world are increasing, leading to an increase in overall surface temperature, etc. But I'm wondering, are these gases (or the effects from ...
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1answer
1k views

Did the Neolithic Revolution have an effect on the earth's climate?

I imagine that human agriculture had a major effect on the composition of flora across the planet's surface. Did the transition from gathering to growing have a measurable effect on climate? If so, ...
11
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1answer
240 views

Equation for predicting contrail formation

I am working on a data visualisation of airline flight paths and their probability of forming contrails. Given weather data for a specific area (location, time, temperature, pressure and humidity) ...
11
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1answer
219 views

Synoptic weather predictibility under climate change scenarios

Under climate change scenarios, it is quite certain that high latitude regions will experience more warming than at low latitudes. For example, in winter the reduced area of sea ice and snow cover ...
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7answers
21k views

Is there any experiment to prove that CO2 with the atmosphere concentration can have greenhouse effect?

All gas molecules have the capability to absorb radiation energy. $\rm{CO}_2$ has much less capability to absorb radiation energy, comparing with water vapor. In Earth's atmosphere currently $\rm{CO}...
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1answer
4k views

Does this peer-reviewed study (referenced in Forbes) contradict the accepted position that climate change is real?

This Forbes article from 2013 (archive link here) with the headline "Majority Of Scientists Skeptical Of Global Warming Crisis" gets brandied around a lot. It states that Only 36 percent of ...
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3answers
651 views

Does this paper, using neural nets, prove industrialization is irrelevant to global warming?

Recently, a paper was published by Abbot and Morahasy (2017) - see specifically Fig. 2. The thesis of the paper is to train an artificial neural network (ANN) on the temperature time series for pre-...
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2answers
891 views

To stop anthropogenic climate change, is it necessary to stop extracting petroleum and start pumping carbon under ground?

The amount of carbon (C) on Earth is constants. As far as i understand, all carbon that is not found in the atmosphere or the oceans in the form of CO2 or CO is stored either in the biomass (plants, ...
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3answers
1k views

Can volcanos change the climate?

I have heard politicians claiming that volcanoes are the sole cause of global warming and using so called "NASA data" to show that the Earth is actually cooling instead of warming. While the nature ...
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3answers
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Will increased precipitation in Antarctica prevent sea level rise?

It has been suggested that global warming will lead to increased precipitation in parts of Antarctica. This would sequester water in the ice sheet, preventing sea level rise. However, the slope (and ...
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3answers
345 views

Did climate cool down when underground hydrocarbons stocks formed?

As far as I understand, the dominant theory of modern climate change says that recent warming is mainly caused by the massive burning of hydrocarbons that used to be stored in solid form mostly ...
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2answers
180 views

Why does the rising of high clouds due to climate change impart positive radiative feedback on radiative forcing?

As seen in the figure below. The larger the temperature difference between surface and cloud, the more positive the radiative forcing is from the cloud. So as the cloud moves up, it supposedly ...
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1answer
315 views

Unstable North Polar Vortex?

What would cause a polar vortex to become unstable a split into 3 smaller ones? How rare is this and what long term effects could this cause if the vortex stays unstable? http://www.severe-weather.eu/...
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1answer
457 views

Is the Younger Dryas associated with an extinction event?

It's often said that, while warming and cooling have happened before, what is unusual about the current anthropogenic warming is that it's happening so fast, relative to previous warming phases$^1$. ...
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2answers
741 views

How do I calculate Per capita $\ce{CO2}$ emissions?

I need to find the per capita $\ce{CO2}$ emissions for Canada in 2010 (expressed in kg/day). I know that Canada had $\ce{CO2}$ emissions of 0.55 (Gt) and a population of 34 million in 2010. I am just ...
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1answer
1k views

Does natural plant decomposition release more greenhouse gases than burning

I understand that all plant matter releases CO2 as it decomposes and also when it burns in, for example, a forest fire. My assumption, upon which this question is based, is that the CO2 release is the ...
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1answer
294 views

Regarding various types of atmospheric pollution

Does all the car pollution (from about 150 million cars at least in the U.S. and a lot more in all of North America and the rest of the world) all the smoke-stack pollution of various factories and ...
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2answers
664 views

Does the long-term ice-core temperature record provide reasonable evidence that the current temperature trend is not anthropogenic?

When looking at the long term ice-core temperature record, it very clearly shows a ~100,000 year cyclical trend with warming spikes and gradual cooling. To the untrained eye, it seems that such a ...
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1answer
235 views

What is the potential impact of hurricane intensification and sea level rise on coastal flooding?

Climate change has the potential to increase flooding by hurricane intensification (magnitude and intensity) and by sea level rise. Many communities around the world are already exposed to coastal ...
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1answer
168 views

Noctilucent clouds and anthropogenic climate change

In reading about observing noctilucent clouds, several articles about this phenomena, such as Science Daily's Spectacular 'Night-shining' Clouds Could Be A Harbinger Of Climate Change, suggest that ...
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1answer
347 views

What makes a nuclear winter so extreme and destructive?

This may be a sort of, pertinent to the times, and disturbing question, inspired by the difficulties surrounding North Korea and the situation with it and nuclear weapons. I've heard of this idea of "...
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2answers
2k views

Could this study “totally dismantle” Global Warming claims?

Could this study "totally dismantle" Global Warming claims? That's the assertion made in the article ‘Bombshell’ climate-change study could totally dismantle the claim humans are causing global ...
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3answers
763 views

Sea Level Rise due to Climate Change

I've been trying to make sense of the argument surrounding sea level rise and not getting very far. Those who claim that Sea Level Rise is insignificant generally assert that we have been unable to ...
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2answers
2k views

Are there anti-greenhouse gases?

The Greenhouse Effect can be described semi-formally as follows: With no atmosphere, virtually all of the heat received by the Sun would be radiated back into space at night. This can be seen on the ...
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2answers
370 views

Is volume of air increasing as CO2 levels increase?

CO2 levels are increasing, they have crossed 400 ppm, which means that of every million gas molecules in the air, 400 are of CO2. It has been increasing. Does that mean the total volume of air in the ...
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1answer
7k views

CO2 emissions per calorie (food)

I have seen several lists with CO2 emissions by weight for producing several different food products. I think this is an interesting consideration, and possible argument for vegetarianism/veganism. I ...
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1answer
176 views

About the actual radiative impact of greenhouse gas emission over time

Say we will emit a certain amount of greenhouse gas over the next 50 years (e.g. 100 billion tons CO2-eq in total). What would happen if I implement a certain GHG mitigation effort to cut the same ...
9
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1answer
335 views

Is altitude of everything decreasing due to sea level rise?

We know that sea level is rising, though some people say climate change is fake. Altitude is defined as the height of something measured from sea level. Since sea level is increasing, and the ...
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2answers
646 views

Relationship between natural disaster and global warming, in the media

Sorry in advance if this is too broad a question. Feel free to let me know if it is off-topic. I don't know more than the next person around about climate change, but I am really not a climato-...
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6answers
643 views

Will the Mini Ice Age solve our Global Warming Heat problem

There is news on the web saying that there will be Mini Ice Age in couple of decades. The question is: Will this Mini Ice Age take away all the excessive heat and prevent Global Warming?
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1answer
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What would it be like to live in an ice age?

If you were born in the most recent ice age, how different would your life be compared to how you live it today? Furthermore, if humans currently lived in an ice age, how would it affect life today?
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1answer
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Why is carbon pollution given more importance than Sulfur pollution or Nitrogen pollution?

Nitrous oxide ($N_2O$) - primary greenhouse gas Carbon dioxide ($CO_2$) - primary greenhouse gas Methane ($CH_4$) - primary greenhouse gas, explosive Nitrogen monoxide ($NO$) - secondary greenhouse ...
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2answers
937 views

Is pure “heat” harmful to the environment?

Is heat, dissipated from a hot conductor to the surrounding air harmful to the environment? If it were large-scale would it have any negative eco-effect? Is a source of heat, considered harmful to ...
8
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1answer
125 views

How will the rising ocean affect aquatic life?

On one hand it creates more habitat for oceanic life, on the other hand, it warms up the oceans and mixes the salt and fresh waters.