Questions tagged [climate-change]

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

Filter by
Sorted by
Tagged with
16
votes
1answer
1k views

How much would the Greenland landmass isostatic rebound contribute to long term climate change?

In reading the question What would the geology and climate of a supposed landmass near the pole be like, assuming a thoroughly warmer planet?, it came to mind that another factor may cause a shift in ...
23
votes
3answers
9k views

Why is there a seasonal cycle to the amount of CO2 in the atmosphere?

I'm doing some homework on the increase of $\mathrm{CO}_2$ in the atmosphere. On one of the graphs it shows the amount of $\mathrm{CO}_2$ peaks in May and has a low in November. Why is this? Shouldn't ...
3
votes
3answers
873 views

Regarding the melting glaciers and icebergs, why isn't the extra water vapor in the atmosphere mentioned in discussions of global warming?

As is reported on the major news networks, many glaciers and big icebergs are melting, which reportedly causes a tremendous increase in the amount of water vapor in the atmosphere. Now a lot of ...
10
votes
2answers
655 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 ...
17
votes
1answer
586 views

To what extent is hydroelectric power really renewable?

One of the more widespread "renewable" ways of generating power is by harnessing hydropower, i.e. by exploiting the movement of falling or flowing water. Some of the most commonly seen implementations ...
8
votes
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.
13
votes
5answers
245 views

How will increased $\ce{CO2}$ affect forests and other vegetative areas?

Some researchers contend that increases in atmospheric CO2 (e.g. from anthropogenic emissions) will enhance plant growth in general. What is the level of that enhancement? Does the associated ...
14
votes
1answer
526 views

Temperature as a function of luminosity and greenhouse gas concentrations

The evidence seems clear that there is an interrelationship between solar luminosity, greenhouse gas concentrations, and temperature. Has temperature as a function of luminosity and greenhouse gas ...
20
votes
4answers
2k views

What is the 'natural variation' in global temperature that climate-change skeptics mention?

I was wondering if there really was some natural variation that keeps getting cited by climate-change skeptics that predicts a warming? The only such variation I can think of would be the milankovitch ...
11
votes
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)?
23
votes
3answers
708 views

How good were climate models of the 1990s at predicting the global temperature trends of the 2000s/2010s?

Was there a significant bias between the ensemble of climate models and the long-term temperature trends? What about spatial patterns?
13
votes
1answer
446 views

Who are the 3% in the often cited “97% of climate scientists”?

The media have variously reported that: Ninety-seven percent of climate scientists agree that climate-warming trends over the past century are very likely due to human activities. Based on this ...
11
votes
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 ...
13
votes
5answers
4k views

How to reduce the atmospheric temperature artificially?

Is there any gas/substance which absorbs/reduces atmospheric temperature? Ozone filters UV rays from the sun light and allows in infrared rays. In my knowledge these infrared rays are the cause of ...
6
votes
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.
7
votes
1answer
91 views

Why is Arizona the fastest-warming state in the U.S. (since 1970)?

The states that have warmed the most — whether you look at the past 100 years or just the past 40 — include northern-tier states from Minnesota to Maine and the Southwest, particularly Arizona and ...
12
votes
1answer
272 views

Where does the biggest land-based ice cap reside?

I'm thinking biggest in volume, regarding which area of the planet will contribute more to a raising in sea level - were the ice in those regions to melt. I can basically think of to candidates, ...
11
votes
1answer
411 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 ...
10
votes
2answers
178 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 ...
11
votes
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 ...
11
votes
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 ...
6
votes
0answers
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 ...
27
votes
6answers
6k views

How much will sea level rise if all the polar ice melts?

There are many movies about global warming, which say that melting of all polar ice would cause the whole world to suffer a huge flood. According my research (teachers, TV, Internet) people hold one ...
13
votes
1answer
770 views

Is it possible to forecast ocean salinity 100 years into the future?

Paleosalinity is measured by chloricity of pore fluids (Adkins 2002). Current data are provided by the CORA dataset. In addition to answers to the main question, there are a few more points I'd like ...
19
votes
2answers
263 views

Will tropical cyclones form and be sustained in areas they previously were not due to global climate change?

With global climate change, is it possible that tropical cyclones (as seen in the Atlantic basin for example) are going to form and be sustained in regions where they previously did not, for example ...
21
votes
2answers
951 views

What caused the Younger Dryas cold event?

During the termination of the latest ice age the warming climate leading from glacial to interglacial conditions was abruptly reverted by a distinct but short (about 1300 years in duration) cold event,...
12
votes
1answer
469 views

Did global warming cause the extreme cold 2013-14 winter in North America?

There have been some claims made (example) that global warming had something to do with why the 2013-2014 winter was so cold in the Midwest area of America. If this is true then how did global ...
31
votes
2answers
1k views

How much of the current global warming is due to human influence?

Approximately what proportion of the global warming seen over the the last century is attributed to anthropogenic sources?
19
votes
3answers
696 views

How do we know that we are NOT in an “Ice Age?”

Historically, the earth has had five "Ice Ages" Each of them lasted millions, tens of millions, or hundreds of millions of years. The last ice age reportedly ended perhaps 10,000 years ago. That ...
13
votes
0answers
654 views

How will climate change affect the entropy budget of the atmosphere?

The entropy per unit mass of moist air can be defined as $$s=(1-q_t)(C_{pd} \ln{T}-R_d\ln{p_d})+q_tC_l\ln{T} + \frac{q_vL_v}{T}-q_vR_v\ln{\mathcal{H}}$$ And in statistical equilibrium, the entropy ...
6
votes
0answers
240 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)
15
votes
1answer
305 views

How will climate change affect the 3D distribution of lapse rate in the atmosphere?

The lapse rate is the rate at which temperature decreases with height. By "3D" distribution, I mean distribution across all latitudes, longitudes, and heights. Would climate change change the lapse ...