Questions tagged [climate-change]

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

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13
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3answers
3k views

Why have “ozone-depleting substances” led to a third of all global warming and half of arctic sea ice loss?

According to the Phys.org article "Ozone-depleting substances caused half of late 20th-century Arctic warming, says study" (emphasis added): A study published today in Nature Climate Change by ...
2
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0answers
49 views

Median earth temperature development in 20th century

Are there graphs with the median temperature development in the 20th century and if not, is there readily accessible data that can be used to calculate it? Median is statistically more stable, at the ...
12
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3answers
919 views

How is global greenhouse gas emission calculated?

I am sure there are different methodologies to arrive at such a number. Can someone in layman terms describe some of the most widely used and trusted methods and what data are used? Sorry I am outside ...
0
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1answer
36 views

What is the global warming potential (GWP) of any gas over a 1 day time frame?

Since in 100 years, the global warming potential (GWP) of methane is 28-36, what will be the GWP in 1 day time frame? Can it be calculated that way?
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0answers
76 views

Climate change: Human vs Natural [duplicate]

The planet has been warming for thousands of years. Human activity has accelerated the warming, but by how much? At some point in the future, without human intervention, the climate will have ...
1
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2answers
231 views

Can anyone explain the REAL reason why CO$_2$ increases global temperatures (not the simplistic greenhouse analogy provided for public consumption)?

The greenhouse effect analogy of global warming is that atmospheric carbon dioxide CO$_2$ absorbs some of the infrared radiation emitted by the Earth, and redirects a portion of that radiation back ...
36
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5answers
10k views

Is climate change a vicious circle?

My question refers to the current process of climate change. CO2 is rising, which leads to the greenhouse effect, which raises temperatures. This leads to more wildfires, which reduces number of trees,...
0
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0answers
53 views

Time for water vapor to generate more greenhouse effect than latent heat?

I have an argument with a climate change denier. He says the raise of water vapor in atmosphere causes a "much larger" cooling effet by taking vaporisation heat from the ground than the heat ...
1
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2answers
117 views

Could we control the weather with a disk in space?

There is recorded evidence from solar eclipses that the moon's shadow has a detectable weather effect. If we placed a disk in space we could project a cold spot onto the planet and control it's ...
27
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11answers
10k views

Global warming - why doesn´t mankind collect heat (thermal energy) and turn it into electricity or send it to space?

Why doesnt mankind "collect" thermal energy (there has to be some way: thermal couplings, detour over chemical energy, whatever) and after it has been concentrated at one point, turn it to electrical ...
2
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2answers
173 views

Could pumping ocean water into desert areas help reduce sea level rise?

I have been reading the discussion about pumping sea water into the desert for purposes of irrigation and changing the dry climate of that area, but what about to just purely offset the rising sea ...
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4answers
325 views

Why are most effects of the predicted climate change negative?

Most of the commonly mentioned effects of the ongoing and predicted climate change are negative: more extreme weather effects, more destructive weather, more diseases, rapid extinctions, etc. Why is ...
6
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2answers
431 views

Could Australia's bushfires aerosols actually decrease global temperature?

Given the vastness and intensity of the bushfires that have been going on in Australia for weeks now, to the point they are generating their own weather and having an impact thousands kilometers away ...
1
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1answer
135 views

How likely is Earth to naturally reverse climate change in the next 2 decades?

A new decade question: given that the “mini ice ages” were triggered by volcanic activity, how likely is it that we will experience similar levels of volcanic activity over the next 20 years? In ...
1
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0answers
135 views

Equatorial Bulge and its implications on the climate

How much of the variance in the climate is due to the equatorial bulge and how much sun radiation do we lose due to the equatorial bulge? I am interested in the variance both through time and ...
1
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0answers
71 views

Climate Change - finding solutions [closed]

My questions are: is there a significant, joint, worldwide, inter-disciplinary, scientific effort to study (brainstorm) possible solutions to climate-change? If it does exist, in whatever form, does ...
2
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2answers
65 views

How much pollution would it take to stop global warming?

The global cooling hypothesis of the 1970s included the theory that aerosols lead to global dimming. That is, that pollutants reduces the amount that the Sun warms the Earth, causing the Earth's ...
0
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1answer
76 views

Where oil is used for [closed]

I am trying to study climate change and lately, I am realizing that oil companies were/are drilling for oils at Alaska, Arctic, Antarctica. Where oil (which oil company drills) is used maximum for? I ...
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0answers
121 views

About climate sensitivity of carbon dioxide: today compared with PETM

Due to IPCC the climate sensitivity of CO₂ very likely is 3.0 ± 1.5 ℃ for each doubling of the concentration of atmospheric CO₂. Counting on earlier global warming using the Arrhenius formula [ΔT=λ·...
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3answers
1k views

High albedo vs low albedo

Albedo is a measure of the amount of light reflected back by an object that is incident on it. So, high albedo means that a greater portion of light falling on something is reflected back. This also ...
1
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4answers
174 views

In a zero carbon future but with increasing energy requirements would Earths oceans continue heating?

We’ve completely obliterated our reliance on carbon based fuels. All our energy comes from renewal resources or even fusion. Our energy requirements continue to rise. Taking this to a deliberately ...
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2answers
4k views

Why was there a negative temperature anomaly between 1950 to 1980?

If I understand the information from this link correctly, Instrumental temperature record between 1950 to 1980 there were negative temperature anomalies in the years of those decades. (1950–1959 ...
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2answers
115 views

Trends in atmospheric CO2

I plotted the atmospheric CO2-concentrations to see trends and wondered especially about the phase around 1600 in the plot which I find very interesting. Etienne Godin already told me some facts in ...
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0answers
89 views

Climate Change in the North

Why has it been so warm in Moscow, Russia the past few winters where the temperatures even overnight have been above freezing when normally it gets brutally cold?
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2answers
208 views

Are 60C heat waves predicted by 5C of global heating? (The worst consequence of global heating)

It seems to be the case that 1C of global heating caused the whole global temperature bell curve to shift two standard deviations to the right. (see below) To anyone knowing much about statistics and ...
3
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1answer
94 views

Reference units for CO2 concentration in the atmosphere and meaning of a slight downward tendancy during the 1600

I discovered here a set of yearly historical atmospherical CO2-concentrations from year 0 - 2014. Since they haven't mentioned which measure they used, I'm not sure whether it is right to talk about ...
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0answers
39 views

What's the origin of particulate matter (pm10, pm2 5) [closed]

I would like to ask about origin and inventor of particulate matter pm10, pm2.5. Who published and defined this formulas and when. Thanks in advance!
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0answers
63 views

Reflected radiation from increased CO2 : how was this calculated

The IPCC claims that the reflected radiation from incresaed CO2 heats the Earth at a rate of 5 W m-2. How did the contributing researchers came out with that result?
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2answers
96 views

Could the recent temperature anomalies in the arctic be used as a proxy measure of global heating?

Because the arctic temperature record would probably not require any of the climategate urban heat island adjustments it would seem to definitively sustain that global temperatures are significantly ...
1
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1answer
186 views

By what objectively correct process could we determine the truth about the actual severity of anthropogenic climate change?

I began to do the best that I could to boil the key facts down to the most basic essence of proving significant anthropogenic climate change: (1) It is a verified fact that since 1959 $\small\...
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1answer
59 views

download NASA Earth Exchange Global Daily Downscaled Projections for single lat lon

I have a lat lon - 23.14, 83.14 and I need to download the NASA Earth Exchange Global Daily Downscaled Projections (NEX-GDDP) data from the below website only for this lat lon. https://dataserver....
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0answers
83 views

Is there any climate science explanation for this graph besides severe anthropogenic heating? [duplicate]

Since 1950 surface temperatures have risen significantly even though the total radiant energy from the Sun has been decreasing over this same period. To the best of my current understanding as long as ...
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0answers
72 views

Is this description of the effects of global warming supported by scientific research?

I found the following web-page which contains a dramatic degree-by-degree account of how climate change could play out in the future: http://globalwarming.berrens.nl/globalwarming.htm. It is more ...
3
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2answers
175 views

How reliable would measuring global heating from satellite be?

Some anthropogenic global heating (AGH) skeptics deny that any global heating is occurring. I figured out a way that could be used to refute them. A weighted average of all of the thermal points on ...
9
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2answers
198 views

What caused peak CO2 to rise, starting about 400,000 years ago?

This question assumes the accuracy of this (and similar) charts. Source of image. From the image, CO2 peaked at about 260, perhaps 265 ppm during the interglacial periods between 800,000 years ago ...
3
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1answer
75 views

In the 800 kyr $\ce{CO_2}$ record, how detectable would a short-term peak be?

It is stated in https://cdiac.ess-dive.lbl.gov/trends/co2/ice_core_co2.html that the temporal uncertainty for the glacier $\small\mathsf{CO_2}$ records is less than $\small\mathsf{5~\%}$ at any given ...
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1answer
71 views

How to better understand the RIP-nomenclature used in the CMIP5 project?

I am a statistician working on a climatological downscaling project in the Caribbean Sea. I am just starting to learn about the CMIP5 GCM data project. I plan to download CMIP5 data from 6 climate ...
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0answers
50 views

The climate effect of the Russian industrial collapse in the early 90's

In 1982 ExxonMobil made this diagram with a slightly excess of the concentration of atmospheric carbon dioxide and global warming. Can this error be explained by the Russian industrial collapse in the ...
39
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7answers
12k views

CO₂ level is high enough that it reduces cognitive ability. Isn't that a reason to worry?

I think the level of carbon dioxide in the air is high enough to reduce the intelligence of humans. This has nothing to do with climate change. Except that both mean we should reduce CO₂. I never ...
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0answers
36 views

What are the ranges of CO2 levels for inner cities and should CO2 be added to the air quality index?

I have a indoor $\small\mathsf{CO_2}$ monitor and putting it on my balcony it indicates values of 1400-2200 ppm for different days ? Is this even possible and what are the ranges of $\small\mathsf{...
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3answers
172 views

Does extrapolating current CO2 trends indicate 7632 PPM CO2 and 14C temperature anomaly within 200 years?

Does extrapolating current CO2 trends indicate 7632 PPM CO2 and 14C temperature anomaly within 200 years? It looks like simply extrapolating the current trends of increasing atmospheric CO2 would ...
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2answers
198 views

What could possibly be a rational basis for rejecting climate science? [closed]

Here is my logic (thus not opinion) if the anthropogenic global heating AGH deniers actually do not have any rational climate science basis for rejecting anthropogenic global heating then everyone ...
0
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1answer
64 views

How do we apply CO2 sensitivity (3C ± 1.5C for every doubling) to current CO2 levels

https://en.wikipedia.org/wiki/Climate_sensitivity#Estimating_climate_sensitivity This indicates that current $\small\mathsf{CO_2}$ levels have a temperature equilibrium of 2.2 $\small\mathsf{^oC}$ ...
3
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2answers
258 views

How can we accurately quantify the degree of scientific certainty that global heating is caused by humans?

How can we accurately quantify the degree of scientific certainty that global heating is caused by humans? It seem virtually certain that the huge 100 ppm spike in $\small\mathsf{CO_2}$ since 1950 ...
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0answers
39 views

How large were CFC emissions per year before the Montreal Protocol came into practice?

This article The China CFC dilemma states CFC emissions now might be 67,000 tonnes per year. I tried to look for how large were the emissions of it before the Montreal Protocol but I couldnt find it. ...
2
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2answers
100 views

How do we allocate partial CO2 doublings for Empirical Climate Sensitivity?

How do we allocate partial CO2 doublings for Empirical Climate Sensitivity? I applied partial doublings on a linear basis, is this correct? Climate Threat to the Planet:Implications for Energy Policy ...
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0answers
60 views

Vehicles Emissions [closed]

What is the suitable handheld device to measure the $\small\mathsf{CO_2}$, $\small\mathsf{CH_4}$ and $\small\mathsf{N_2O}$ emissions from the tailpipe of cars? and what the steps to convert the ...
3
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4answers
204 views

Could burning all fossil fuels (available on earth) render the atmosphere unbreathable?

What if humanity burns all fossil fuels it can find? Putting the negative effects of climate change aside, would the enormous amount of $\small\mathsf{CO_2}$ in the atmosphere eventually make it ...
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0answers
25 views

Can any natural process explain this rate of CO2 increase? [duplicate]

Can any natural process explain this rate of CO2 increase? [![1000 years of CO2][1]][1] [1]: https://i.stack.imgur.com/MO0mK.png The prior similar question used different data as its basis. This ...
2
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0answers
54 views

How does extra carbon dioxide in the atmosphere contribute to radiative forcing?

The CO2 absorption spectrum taken at 200 mmHg partial pressure, beam path length = 10 cm, resolution = 4 cm^-1 shows that light can only travel a couple hundred meters before being completely absorbed ...