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Questions tagged [climate-change]

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

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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 ...
2
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0answers
9 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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0answers
39 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
58 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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0answers
45 views

How much energy would be required to reduce the temperature of the oceans of Earth by 1℃?

Is there away 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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20 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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On what extend MODIS reflect the real image of snow cover at high altitude, steep and deeply snow cover area?

The accuracy level of MODIS data comes under debate for the representation of snow cover of high altitude. For example, third pole (Tibetan plateau) has elevation above 6000 m and stretching over a ...
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40 views

Historical deforestation of Ireland and its implications

This wikipedia article: https://en.m.wikipedia.org/wiki/List_of_forests_in_Ireland claims that upon human arrival, Ireland was heavy forested, then due to heavy deforestation ,it became devoid of ...
3
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1answer
87 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. ...
3
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1answer
115 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 ...
3
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1answer
68 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?
3
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1answer
125 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
76 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 ...
8
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1answer
164 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
68 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
23 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
31 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
11 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 ...
3
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2answers
120 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 ...
3
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2answers
136 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 ...
5
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1answer
91 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
91 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 ...
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1answer
193 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 ...
4
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1answer
50 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
79 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
107 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 ...
1
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1answer
102 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 ...
5
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1answer
150 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. ...
9
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1answer
273 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/...
10
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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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6answers
8k views

Is the sea level rise unusual?

I'm discussing climate change with a friend who is a climate change denier, basically the argument is that looking at this graph, is not clear that something unusual is going on, so the sea level rise ...
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1answer
41 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 ...
6
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2answers
111 views

What is the relevance of Arctic coastal erosion to the Earth's climate?

Due to global warming and Arctic amplification, Northern Hemispheric permafrost is thawing and becoming a source of carbon and many greenhouse gases, which then positively feedback to global warming ...
3
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1answer
96 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 ...
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3answers
40 views

Where can I download recent precipitation data for Cape Town

I need data on monthly precipitation for Cape Town between 1970 and 2018. I found this page: http://cip.csag.uct.ac.za/webclient2/datasets/ But it only seems to offer information until 2000. It's the ...
3
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1answer
87 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 ...
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2answers
161 views

Why is a future increase in solar luminosity by 10% supposed to have disastrous consequences for life on earth when the last 30% did not?

One remarkable thing about the climate history of earth is that despite the fact that solar luminosity was fully 30% lower in the beginning, temperatures were actually quite close to today. Since then ...
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2answers
49 views

where to download NASA-NEX daily downscaled datasets?

I'm looking to download a small geographic area of the CMIP5 models part of NASA-NEX dataset. Previously I relied on the Planet OS OpenNEX GDDP website which had a great tool for selecting geographic ...
5
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2answers
101 views

Are plastics a carbon sink and how much carbon is released to the atmosphere making them?

If we were to make some technical jump to renewable fuel and renewable energy, would making plastics from oil release green house gasses, how much, and would plastic function as a carbon sink? Sorry ...
7
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3answers
160 views

Could the current climate change events cause long-term problems in the viability of Earth to sustain life?

There are a lot of reports on the consequences of climate change for the relative short term. From what I understand, in the next 100 years or so, we will face: global floods of coastal areas, ...
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1answer
61 views

Does a climate change big data provider exist? [closed]

Does a big data provider (Like a Bloomberg, which is the world's leading financial data provider) exist which includes ALL the possible informations and parameters about climate change or in general ...
2
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0answers
64 views

Which software is easiest to use to create plots like these? [closed]

There seems to be many options for a single problem, but each with different approaches and complications, and that makes is confusing and time consuming for this beginner to work out which to use. I'...
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0answers
31 views

Seeking CMIP5 or CMIP6 globally in .nc format

Is there in some ftp storage, a pre-processing CMIP5 data for direct download in netcdf extention?
6
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1answer
225 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 ...
2
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1answer
65 views

How much net carbon can coral sequester?

So I am wondering how much carbon any given coral can sequester given that carbon dioxide dissolves in water and forms carbonic acid, and coral uses that carbonic acid in their own calcification ...
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0answers
145 views

What are the environmental effects of leaking hydrogen from large-scale energy storage mechanisms?

I recently have calculated the total cost of an energy system that is based on wind power as the primary power source and hydrogen as the energy storage mechanism. The total system costs are ...
5
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1answer
82 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 ...