Questions tagged [climate-change]
Questions about changes of the climate system, including questions about global warming.
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Calculate GWP over arbitrary time
The GWP (Global warming potential) is calculated over a given time scale $T$ (20 or 100 years usually), defined as the ratio between the energy absorbed by a pulse of 1Kg of gas during time $T$ ...
4
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2answers
95 views
The seriousness of global warming/ climate change? [on hold]
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 ...
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102 views
How would the climate and human life be if there were no variance except temporal due to the solar angle and spatial due to the latitude? [on hold]
I would like to describe a very specific scenario much clearer than simply no Milankovitch Cycles but my question would be closed as too broad due to the apparent verbosity. Or at least I presume so ...
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51 views
Can we predict the rising temperature of Earth?
Where can I find a model of Earth's past climates and future projections from combined possibilities like magnetic pole movement and other forms of global warming as a map? Without a reference it has ...
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1answer
82 views
Understood cause of sea level rise between 1850 and 1950
This question is based on the following graph from a 2018 report by J. Curry.
(I haven't found any peer-review of the report itself so I can't vouch for the validity of its claims, but that's not the ...
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0answers
35 views
Are there more meteorological catastrophic events due to climate change?
I was told by a sedimentologist there is no evidence of more climatic catastrophic events at the geological register previous to Pleistocene, when climate was warmer.
My question is if meteorologists ...
3
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1answer
66 views
Is there scientific evidence connecting the current climate in India with global warming?
Experts say up to 40 % of India might witness drought this year.
Is there scientific evidence that this is due to the global warming and climate changes?
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1answer
68 views
What happens when the North and South poles flip?
How long does it take the magnetic field to move once the poles start to flip?
What environmentally would change? Does the core of the Earth flip?
The magnetic poles are moving now. When will it ...
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22 views
How does a change in the tilt of the Earth effect climate? [duplicate]
Could the Earth survive if the axis was less or more of the tilt of that what it is now, and by how much? How would the Earth act if the axis was pushed to an extreme tilt or lack there of?
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85 views
Milankovitch cycles and what?
Observe the vertical green lines in this diagram:
Those events shows when temperature starts to sink when radiance is at top or even before that. If there was a simple connection between radiance and ...
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1answer
39 views
Yearly changes of solar irradiation and atmospheric feedback
I think I understand the mechanism of water vapor feedback in climate change pretty well: a (theoretical) temperature increase due to some isolated factor (e.g. increase in $CO_2$ concentration) ...
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2answers
90 views
What could cause a turn from global warming to global cooling?
Except a hypothesized orbital forcing! Ice cores shows that there are several irregular sharp temperature peaks in between of the big 100,000 years glaciations. What could cause those peaks?
Almost ...
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3answers
86 views
Looking for counter-arguments concerning the melting of glaciers in the alps in the context of global warming
I've recently listend to a talk of Prof. Gernot Patzelt, Austrian Geographer and High Altitude Mountain Researcher. In this talk he describes that scientists find rests of trees and moorland apearing ...
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26 views
Estimating Diurnal Temperature Changes for a region due to Climate change?
I am working on UHI related studies. I am wondering is it possible to estimate how diurnal temperature cycle would change for a typical day of given season.
Edit: Based on comment I am trying to add ...
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41 views
Why doesn't vapor counts when calculating global radiative forcing?
When NOAA/ESRL calculates global radiative forcing (Table 2) there seems to be no contribution from water vapor. How come?
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1answer
54 views
What would be the extent of the feedback on climate of unattended deaths event?
Being given that decaying corpses will stop emitting digestive metane, but would release huge amount of methane during their decaying process, I was wondering if this could be considered among the ...
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44 views
Can extratropical cyclones force global cooling?
We are living in a historical period of global warming since about 20,000 years ago. This global warming period is one of about ten in human history. Those periods may very well be forced to start by ...
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1answer
49 views
Which are the mechanisms of the correlation between atmospheric carbon dioxid and global warming/cooling?
In the end of glacial periods there seems to be an increasing release of carbon dioxide as the global warming increase and at the end of these global warming periods the content of carbon dioxide in ...
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4answers
119 views
Total CO2 is not constant?
I've got a friend who is a climate change sceptic.
He argues that because all the CO2 in fossil fuels originally came from the earth's atmosphere. Then there can't be a problem releasing the CO2 ...
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0answers
31 views
Can CO2 / greenhouse gas levels override the effects of milankovich cycles?
I understand that we are, in all likelihood, towards the end of an interglacial period (the holocene). What I'd like to know is, what has a stronger effect on global temperatures - the low point of ...
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0answers
12 views
Sequestration of NO and NO2 Gasses into Soil
The university I'm a student at has been looking into Anaerobic digestion to reduce the environmental impact of the large amount of post-consumer food waste generated on campus. While this project has ...
3
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1answer
113 views
Which greenhouse gas has the most influence over global warming?
Carbon dioxide is the gas everyone talks about because of how much we emit, but it is the most influential greenhouse gas ? I know there are a lot of other gasses are way more potent to retain heat ...
2
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1answer
72 views
3 Billion years ago, the earth is covered with Carbon Dioxide. Where did it go?
Oxygen gas began to appear on the earth surface about 2 billion years ago by photosynthesis. Carbon Dioxide was converted into carbohydrates in the process. Where did these carbohydrates go?
If they ...
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1answer
98 views
How much energy would be required to actively reduce the temperature of the oceans of Earth by 1℃?
Is there a way to calculate the energy required to reduce the heat of oceans?
Am I wrong in thinking it is not as simple as reversing the calculation for specific heat of sea water?
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0answers
21 views
Is there any downscaled income data for representative concentrations pathways?
I know that downscaled income data existed for The Special Report on Emissions Scenarios (SRES) Scenarios for IPCC's climate change scenarios. (http://ciesin.columbia.edu/datasets/downscaled/)
For ...
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1answer
121 views
Are we going to enter a mini ice age in the next decade?
According to this article, a mini ice age could hit Earth by 2030
Mini Ice Age could hit Earth by 2030
and according to this video
NASA admits mini ice age coming faster than anticipated.
...
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1answer
148 views
Is “Carbon Neutral” (roughly) 5 Gt CO₂ equivalent?
One key target set out by the IPCC is to be carbon neutral by 2050. That is, the gross green house gas emissions of Humans is less than the carbon absorbed. I'm struggling to find a good source for ...
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1answer
74 views
Equations for Milankovitch Factors?
Are there equations for the radiative forcings of the three Milankovitch factors at any given time? Or a database of values?
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1answer
156 views
Why doesn't Earth absorb our carbon emissions?
If we look at the carbon cycle, we see that man-made carbon emission only account for a tiny fraction of all $\text{CO}_2$ emissions.
However, we see a steady rise in atmospheric $\text{CO}_2$-levels....
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2answers
93 views
What are the farthest Time Zone locations? [closed]
What place in the world has the farthest time zone? I heard it was Kiribati but then I found that Apia (Samoa) is further. So, is there anyplace that is the farthest in time than these two? What about ...
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1answer
174 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 ...
4
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0answers
82 views
How temperature anomaly are measured
Temperature Anomaly is the measure used to show that the earth is warming. The formula for temperature anomaly involves in the subtraction of average temperature measurement over 30 years considered ...
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0answers
26 views
Biomes that existed during the Paleocene-Eocene Thermal Max (PETM)
I understand that you could fill multiple books with descriptions of the PETM and the mechanisms that incited the event. I have always wondered what regions of the world were covered in what types of ...
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0answers
36 views
Can spraying sulphate particulates in the upper atmosphere to lower Earth's temperature have side effects?
According to Geoengineering treatment stratospheric aerosol injection climate change study
Planes spraying tiny sulphate particulates into the lower
stratosphere, around 60,000 feet up. The idea ...
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0answers
12 views
How does planned cattle grazing compare with other methods (like carbon capture) of mitigating climate change?
I recently saw a great talk by Allan Savory, the pioneering ecologist about holistic management of cattle grazing to prevent desertification of grasslands. He claimed that it is the only viable way ...
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2answers
145 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 ...
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2answers
141 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 ...
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1answer
96 views
When sea level rises, does the increased ocean area cause the earth to cool down somewhat?
When the sea level rises, more of the planet's area is watery and less of it is land. Does this change in surface condition result in a change in global warming, such as a decrease in the net ...
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2answers
11k views
Why do climate experts from the UN/IPCC rarely mention Grand Solar Minimum?
I've read many papers about Grand Solar Minimums and Glassberg Minimums, known to science for a very long time, and studied and monitored with many public funds. History shows solar activity is the ...
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1answer
157 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 ...
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1answer
98 views
Do HAARP-like programs have effects on climate? [closed]
Military powers like USA, Rusia and China have programs to heat through electromagnetic waves the Ionosphere. HAARP supposedly is a research program, but run by part of the military of US (Air Force ...
10
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1answer
207 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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1answer
59 views
Waterlevel increase calculation
So I tried to calculate the rise of waterlevel myself. But the results I have gotten seem to be pretty low:
Given the earths radius, I clalculated different Events:
1) If all landice melts there is ...
6
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1answer
130 views
How much could Earth's temperature increase by the time we run out of oil reserves?
According to this article How long will world's oil reserves last?:
At the current rate of extraction oil reserves will last 53 years.
And according to this another article, Global temperature - ...
3
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1answer
81 views
Is there consensus amongst climatologists that cold weather extremes are caused by global warming or human influence?
Is there consensus amongst climatologists that cold weather extremes are caused by global warming or human influence?
I hear the claim a lot that the recent cold weather extremes (such as the polar ...
5
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1answer
152 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 ...
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1answer
105 views
Are we at the beginning of a Heinrich Event?
Does our current weather trend properly reflect a Heinrich Event? It seems like the drastic weather swings are what I would expect but I realize that is not definitive. I don't see the term bandied ...
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1answer
172 views
Would more or less land be usable if global temperatures rose?
I think a large portion of the earth's land is unusable from being too cold and land that is too hot does not have enough water and dries out which could be fixed by diverging water to those areas.
...
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1answer
297 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
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 ...
