Questions tagged [climate-change]

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

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6
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1answer
218 views

How significant is human influence on seismic activity?

Here's a graph from johnstonsarchive.net showing energy released by earthquakes and, however reliable this graph is, it shows huge differences in earthquake activity. About how big percent is the ...
6
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1answer
202 views

Carbon's role in ocean acidification

This might seem like a basic question, but I'm a little confused about the effects on ocean acidification of different carbon compounds. I have heard that increased levels of carbon dioxide in the ...
6
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2answers
1k views

How will climate change affect the latitudinal distribution of precipitation over each latitudinal region?

In other words... How will it affect precipitation in the tropics? The mid-latitudes? And the polar latitudes? I'm interested in both the mean and variance of the precipitation.
6
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1answer
469 views

How much of Earth's forested land is currently protected from logging/deforestation?

Deforestation is an ongoing global problem. From this National Geographic webpage: The quickest solution to deforestation would be to simply stop cutting down trees. [However], financial realities ...
6
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1answer
295 views

Tipping point theory, historical examples

This article gives a wonderful overview of tipping point theory, where a large system can be brought into a different state by a small perturbation. Searching online I have found mostly articles on ...
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0answers
435 views

How much of Earth's surface would be covered by water if all ice melted? [duplicate]

I'm trying to find how much water would be on the surface of Earth and how much surface would it cover (how much land will remain) if all the ice at the North and South Poles (and everywhere else) ...
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68 views

Is global warming occuring only because of humans? [duplicate]

I learned that human activities produce gases that deplete the ozone layer, and create the greenhouse layer, which increases the world's temperature. (And seems real , now in Thailand it's 35 degree ...
6
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241 views

How will climate change affect the total kinetic energy in the atmosphere?

In particular, how it will affect the eddy and zonal components of kinetic energy in the atmosphere? (I'm also curious about potential energy, though that could come in another question)
5
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3answers
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Is the Unified Theory of Climate (Nikolov & Zeller) compatible with the AGW/GHG theory in any respect?

Nikolov & Zeller have published a paper concerning what they call The Unified Theory of Climate. https://www.omicsonline.org/open-access/New-Insights-on-the-Physical-Nature-of-the-Atmospheric-...
5
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1answer
657 views

How does CO2 contribute to global warming?

CO2 is a common agent in fire extinguishers, which suppresses fire. How does this same chemical contribute to global warming when it also puts out fires?
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3answers
2k views

Can ice caps reform if they disappear?

Excuse my ignorance. I'm under the impression that there are various types of ice at the poles, but I don't know the difference or the significance of each type, so, in terms of whatever is actually ...
5
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3answers
3k views

Would adding sulfur dioxide to the atmosphere have a global cooling effect?

There is reasonable evidence to suggest that the Earth is warming. The most probable cause appears to be increased CO2 in the atmosphere, which has been reasoned about for quite some time. There ...
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2answers
3k views

How would Earth map look like if all ice melts?

Is there somewhere a map which indicates which areas and cities become sea?
5
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1answer
125 views

Would ultra-efficient carbon sequestrion produce immediate results in global temperatures?

So, imagine a new technology were introduced that was incredibly efficient at carbon sequestration, lets say removal of ~90% of carbon in processed air and processing 10 tons of gas per minute (these ...
5
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2answers
136 views

The seriousness of global warming/ climate change? [closed]

Why is such an emphasis placed on sea level rise?? As this can be devastating in itself, it can be looked at as a great economic opportunity to put people to work preparing our coastal areas for the ...
5
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2answers
285 views

Is non-randomly-sampled historical data representative?

I'm a global warming skeptic, and one of my concerns is the accuracy of historical global temperatures. Since these temperatures weren't sampled at random locations or gridded points, can they be ...
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2answers
1k views

When is the next glaciation due?

Let's say we invented a whizzy technology that took CO2 back to pre-industrial levels, say 280ppm, how long would it take for glaciation to resume ? (I'm not angling for a denialist perspective here, ...
5
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1answer
87 views

Technical term for percentage of CO2 remaining in the atmosphere

I have a theoretical exercise where I calculated the amount of CO2 that is released to the atmosphere per year (4.6 ppm). We assume that the relative increase of CO2 is 2 ppm, hence the percentage of ...
5
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1answer
372 views

Ocean level rising, or the floor getting higher?

I randomly had a question pop into my head: "Why are oceans salty, but rivers are not?" This article seems to provide a plausible explanation: http://oceanservice.noaa.gov/facts/riversnotsalty.html ...
5
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1answer
190 views

If US emissions went to zero how long until global emissions reach current levels

Given the current global CO2 emission trends, if the US overnight magically went to zero emissions (without affecting worldwide emissions), how many years until global CO2 emissions return to exactly ...
5
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1answer
82 views

Why the $\delta \, ^{18}\text{O}$ in foraminifera shells decrease with temperature even if the oceanic $\delta \, ^{18}\text{O}$ stay constant?

I understand why foram shells contain more $^{18}\text{O}$ when there are ice sheets present, since $^{16}\text{O}$ evaporates more readily and gets trapped in the ice, increasing the relative ...
5
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2answers
1k views

Are greenhouse effect and ozone depletion correlated?

I have read that these phenomena do not have an interaction. However, I would think if CFCs cause the ozone layer to thin, and more UV radiation enters the Earth system, the Greenhouse Effect would ...
5
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2answers
860 views

Why are CO2 sensors so expensive when CO sensors aren't?

Please excuse me if Earth Science is not the correct place to ask this question. I read a New York Times article about increasing CO2 levels in the atmosphere: "Carbon in Atmosphere Is Rising, Even ...
5
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1answer
870 views

Rate of climate change with and without humans?

I was watching this interview of Bill Nye on Fox News. Bill claimed that the earth's climate is never in equilibrium, but human activity has caused the gradient to be much higher than it would've been ...
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1answer
46 views

Does the extension of the absorption line of $\text{CO}_2$ with temperature play a role in the climate change?

I've read not long ago that the absorption line of the $\text{CO}_2$ becomes larger with temperature thanks to Doppler effect (if it's false it would be great to tell me). My question is the following:...
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2answers
75 views

How does agriculture release so much greenhouse gas?

I recently came over some numbers of GHGs released per energy in food produced, and the result is pretty flooring. I can see how animal-based food production is quite inefficient so let's ignore that ...
5
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1answer
48 views

Are there any consequences to carbon capture and storage that also sequesters oxygen?

A big argument for carbon capture and storage is true reversal; while switching to renewable energy and eliminating CO2 emissions is a must, it will not reverse the massive movement of carbon from ...
5
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1answer
121 views

Are 'Return Periods' being recalculated? If so, how?

The concept of 'return period' (= 'average recurrence interval', or ARI) is widely used in hydrology, and to a much lesser extent in geology, geomorphology, geophysics, etc. Whatever the application, ...
5
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1answer
110 views

Do higher global temperatures increase volcanic activity and earthquakes?

I've read that when global temperature increases significantly, liquid magma can make it's way closer to the surface of earth, causing increased volcanic activity and earthquakes. Is there scientific ...
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120 views

Will the recent findings regarding nitrogen rock weathering alter climate change projections?

I've seen a few articles lately about research published in the Journal Science that concludes that 26% of the nitrogen in the ecosystem is from rock weathering. These results seem to fill in a ...
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383 views

What is the “global mean surface temperature change estimate” an estimate of?

NASA publishes what it calls an "estimate" of the Earth's global mean surface temperature. Digging through papers I've been able to find some documentation of how these numbers are computed, but I ...
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352 views

How accurate are climate models? [closed]

"All models are wrong but some are useful". I am not against the concept of anthropogenic climate change because climate models may not be strong source of information for climate change. Observation ...
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69 views

Relationship between obliquity, antarctic circumpolar current, and atmospheric $\ce{CO2}$

Hannah's text on the biology of climate change appears to suggest that forcing due to changes in obliquity can act in opposite ways in Antarctic waters. On one hand, "Low obliquity brings cool ...
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2answers
2k views

What is the difference between climate change and global warming?

1. Question: In the article, Global Warming vs. Climate Change is an example of the confusion regarding these terms. What are the "official" definitions of "Climate Change" and "Global Warming"? ...
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2answers
146 views

How CO$_2$ warming effect stays overnight?

Water vapor looses it energy at night (no sun, no UV) and this is deposited as dew. Change of state requires a massive energy change, in general. Is the greenhouse effect of CO$_2$ not lost when it ...
4
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3answers
78 views

Has the present rise of CO2 ppm been proved to be caused by human activity?

The level of CO2 in the atmosphere has risen roughly from 300 to 400ppm over the last 60 years. What are the reliable calculations showing that such a rise has been caused by human activity? I am ...
4
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2answers
150 views

Cattle really contributing to Global warming?

Let me be straight up. I'm a physicist, I've no doubt about climate change and the part we play in it. I had been reading about cattle being one of the alleged main causes of climate change. I get ...
4
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1answer
615 views

Every 202,500 years, Earth wanders in a new direction; does it affect climate?

I refer to this article on nytimes.com: Every 202,500 Years, Earth Wanders in a New Direction TLDR: Scientists believe the earth's orbit oscillates between circular and more elliptical due to the ...
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2answers
152 views

Do current general circulation models model climate oscillations?

Ten years ago I studied the third report of the Intergovernmental Panel on Climate Change with some friends. I remember a bit of a hedge in the report, to the effect that general circulation models ...
4
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2answers
174 views

Are we changing Earth's weather with global warming?

I think that when the air heats up in the day, the radiation from the ground contributes way more to its heating at altitudes more than 300 meters above the ground than convection currents of air heat ...
4
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1answer
160 views

What are the ranges of natural (or pre-industrial era) levels of CO2 in the atmosphere in ppm and tons?

Are the levels of natural (before the industrial revolution) levels of CO2 and ppm known? Also as a related question, should the "natural" levels be considered before the industrial revolution or ...
4
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2answers
144 views

Winter in the Northern Hemisphere in July? Can anyone explain it?

The July 2007 issue of the National Geographic Magazine dedicates several pages to "Climate Change" and "Global Warming". The author explains in detail the Earth's movements and how they provoke ...
4
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1answer
339 views

Global warming cycles

Everyone is saying we are in a global warming, an unnatural one at that because of CO2. Has there ever been a 'global warming' in Earth's history? I know that global cooling is cyclical and 'looks' ...
4
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2answers
782 views

How do we apply the Stefan-Boltzmann equation to radiative heat transfer from/to CO2 in the atmosphere?

If we can use the Stefan-Boltzman equation to quantify the radiative flux leaving a solid body due to emission of radiation and to do it properly for a solid body we need to include the emissivity ...
4
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1answer
102 views

Weather conditions to create significant glacier growth

I am fascinated at the rapid growth of Glacier Bay Glacier from 1600 to 1750, along with its rapid retreat from 1750 to 1900. I am interested in the local weather conditions during these times. What ...
4
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1answer
95 views

Is it possible to create ice in poles? [closed]

Is it possible that human can built under the poles a controlled system to create again artificial icebergs? In order keep tight the melting ice and reduce the sea level? Can this system impact the ...
4
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1answer
351 views

Effects of global warming on drought in India

Is there an intuitive explanation for non-specialists why India is projected to experience a decrease in drought (= increase in PDSI) due to global warming, unlike most areas at the same latitude(s), ...
4
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1answer
100 views

Cooling film area to undo global warming

It is estimated that only 100 square miles of solar panels could completely satisfy the United States demand for energy. This got me thinking: A cooling film developed at UC Boulder claims it can ...
4
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2answers
653 views

Why is Vladivostock so cold, while Dalian is so warm?

Over at SE History we're pondering the relation of temperature to Russian motives in establishing its Port Arthur colony in the late 1800's. Wikipedia says that Vladivostok is cold due to the ...