Questions tagged [climate-change]

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

Filter by
Sorted by
Tagged with
1 vote
0 answers
21 views

Where Do I FInd IPCC RCP Global Mean Temperature Predictions?

We have written a free textbook at (http://climate-change.world). Its main focus is on the social science side of changing emissions. We are not atmospheric scientists, so all we want to do is to ...
  • 111
2 votes
1 answer
49 views

What exactly does point-of-no-return for carbon emissions mean?

I think I have heard that if the carbon emission raises a small amount above the current, it would be "point of no return". I heard it a long time ago, so I just searched Google and the top ...
2 votes
1 answer
50 views

How does dredging help the rivers that have gone dry?

How does dredging help the rivers that have gone dry? If you dig deeper, that small, and fixed, amount of water is just going to go lower, isn't it? That just what my layman's logic says, at least. ...
0 votes
1 answer
38 views

How do melting glaciers dry rivers?

How do melting glaciers dry rivers? Unless there's less precipitation during winter, I don't see how it affects the volume of water of the rivers that glaciers feed into. If it's cold, water ...
2 votes
0 answers
43 views

How is sea level rise due to a glacier melting calculated?

There's news going around (e.g. link) that the melting of the Thwaites glacier may cause sea levels to rise by 10 feet. Is that true and not exaggerated? How is the calculation made? They said the ...
2 votes
0 answers
21 views

What was the physical environment like in the Fertile Cresent between 10k BCE and 1 CE?

Mesopotamia was part of the Fertile Crescent, and Assur was an Assyrian city in Mesopotamia for roughly 1500 years, but it looks like this now (barely any vegetation, pure desert): What was the ...
  • 259
0 votes
0 answers
36 views

Why Climate Change (CC) or Global Warming (GW) does not take into account the actual heat from human combustion processes? [duplicate]

Are there any papers or calculations of how much we could be warming the atmosphere by these processes?. Please also share any clues to find those numbers if you have. The volume of a car engine ...
  • 131
2 votes
2 answers
50 views

Is there a relationship between pressure drop and sea level rise?

Climate Fresk is a NGO which publishes a card game aimed at educating people about climate change. Card 33 (page 16 of this pdf file) reads (emphasis mine): Cyclones and atmospheric waves bring wind, ...
6 votes
0 answers
142 views

How much carbon dioxide does war release?

I'm wondering how much damage the Russian invasion of Ukraine has done to the climate, in particular how many tons of carbon has been released into the atmosphere. I'd be surprised if it isn't ...
  • 161
2 votes
2 answers
152 views

Does visible light warm the earth?

I read that most radiation reaching us from the sun is visible light. Yet, heat can only be radiated away from earth as infrared. Is this correct? If so, why can the oceans (say) absorb heat from ...
  • 261
3 votes
1 answer
132 views

Is ocean pasture restoration a real solution to quickly mitigate climate change?

In this youtube video American entrepreneur Russ George claims that - based on research of oceanographer John Martin and some experiments he made in British Columbia - pouring mineral dust into the ...
  • 130
0 votes
1 answer
74 views

Aerosol injections to manage European heatwaves?

The heatwave that hit Europe in July was not only highly unpleasant (40°C), but has been predicted to be an exceptionally onerous medical, agricultural and economic burden. As someone outside of the ...
1 vote
1 answer
105 views

Global change or climate change [closed]

I was just wondering whether it wouldn't make more sense to describe climate change as global change. After all, it is not only the air temperature that has been changing in recent years, but also ice ...
  • 1,354
4 votes
0 answers
54 views

Why is the global warming potential of methane and ozone so much higher than CO2?

When sources describe global warming potential of different gasses, such as in this paper on radiative forcing, methane and tropospheric ozone respectively are given GWP values of around 29 and 65. ...
  • 141
0 votes
0 answers
42 views

Maximum Air Temperature Decrease Over Time

Based on the maximum air temperature Time series plot plot below. What could be a possible reason(s) for Maximum Temperature to ...
  • 101
3 votes
0 answers
76 views

Change in vapour pressure due to climate change

I was just wondering how much the vapour pressure has changed due to climate change. Because with changing temperatures, the vapour pressure also changes; this is described by the Clausius-Clapeyron ...
  • 1,354
7 votes
0 answers
202 views

Why is the Northern Hemisphere warming faster than the Southern Hemisphere?

Hi I just found the NOAA table. It clearly shows that the N. hemisphere has warmed much more than the southern hemisphere since 1880! https://www.ncei.noaa.gov/access/monitoring/monthly-report/global/...
  • 1,354
14 votes
5 answers
8k views

Why had climate change not been proven beyond doubt for so long?

I just read the IPCC's Fourth Assessment Report and noticed that this is the first (or first very significant) report to state that climate change exists and can no longer be scientifically disproved. ...
  • 1,354
2 votes
0 answers
68 views

What's the effect of space launches on climate?

Do space launches warm or cool the surface temperature (admittedly, for a little bit)? This BBC article presents it as an emerging climate problem but also says If the amount of black carbon expelled ...
3 votes
1 answer
61 views

Change in thermohaline circulation due to climate change

The melting of the North Polar ice masses removes a driving factor from the thermohaline circulation, known as the Gulf Stream in the North Atlantic. I wonder how much the thermohaline circulation has ...
  • 1,354
2 votes
0 answers
12 views

Empirical adjustment factors for generating sub-daily precipitation values (for IDF curves)

I am trying to generate an Intensity-Duration-Frequency (IDF) curve using 6-hourly precipitation data. These curves are used to estimate the return period for a rain event with a specific intensity (...
  • 21
1 vote
0 answers
47 views

Describe changes in atmosphere data - mathematical solutions

I interpolated isotopic data (2H or 18O) from 1970 and plotted it on a map. I did the same with data from 2010. The interpolated data are gridded data which have changed over time. Up to now I have ...
  • 1,354
2 votes
1 answer
132 views

Countering climate change skeptics that point to previous warming episodes

If the question is a bit confusing, what I'm asking is if there is scientific evidence to counter an argument against climate change that I had come across. The person said that climate change is not ...
  • 121
1 vote
0 answers
36 views

Change in evaporation in the North Atlantic since 1890

Hi I was wondering if there are any good open Access models of the oceans from the 1890's to, lets say 2100! I have already found the site but I am looking for more alternatives: https://esgf-node....
  • 1,354
1 vote
1 answer
70 views

Milancovich analysis

I would like to show the change in temperatures since 1960 until today. I have thought about creating two time blocks, e.g. from 1960-1970 and from 2010-2020! Then I want to average the data of these ...
  • 1,354
3 votes
0 answers
75 views

How quickly climate zones are shifting due to climate change!

Hi I was wondering how fast the climate zones (according to W. Köppen) have shifted in the last 22 years. It is well known that the zones shift about 100-200 km to the north or south for each degree ...
  • 1,354
2 votes
0 answers
32 views

Are natural or artificial pools of water (like ponds) carbon positive, negative or neutral?

Are natural or artificial pools of water (like ponds) carbon positive, negative or neutral? They store carbon, but anaerobes release methane, don't they?
1 vote
1 answer
71 views

Would the Climate change in Southern Africa by Filling Lake Makgadikgadi Evaporation Pans with water from the Zambezi and Chobe Rivers?

I have Macro question, and have enquired and discussed this topic with numerous people. My background is more in Economics and Finance, and read a very interesting article if I am not mistaken 10-15 ...
2 votes
0 answers
18 views

What is the connection between climate change and phosphorus and positive feedback loop?

So what is the connection between climate change and phosphorus and what are some examples of potential feedback loops of this connection. I think a very common response is probably the leakage of ...
3 votes
2 answers
123 views

How does the increase in CO2 concentration model explain the extreme lower colder temperatures

With burning of fossil fuels resulting in increased CO2 concentration, I get how increase in CO2 leads to a hotter planet and global warming because Earth's heat balance has been affected by CO2 ...
  • 31
3 votes
0 answers
44 views

How quickly can global means surface temperatures react to changes in CO2?

I am interested in whether short term (approximately decadal) variations in atmospheric CO2 would be observable in the consequent variability in Global Mean Surface Temperatures (GMSTs) as a result of ...
2 votes
0 answers
27 views

Universal or Ordinary Kriging?

Hi I am creating an isoscape model in which I am plotting 2H and 18O of precipitation. Until now I have always used ordinary kriging for the interpolation, but I am somewhat dissatisfied with the ...
  • 1,354
4 votes
2 answers
87 views

How does water vapor cool the troposphere?

I have read about the Fixed Anvil Temperature (FAT) hypothesis and wonder why radiative cooling decreases with decreasing water vapor mixing ratio. Doesn't this stand in contrast with the fact, that ...
  • 41
2 votes
0 answers
28 views

Which variogram method for ordinary kriging?

I want to plot atmospheric data (2H and 18O) on a map and use ordinary kriging for the interpolation. Now I have the question how to quantify which variogram method (Gaussian, exponential spherical) I ...
  • 1,354
2 votes
2 answers
248 views

Would covering part of Lake Mead with large sheets of bubble wrap reduce the amount of water lost to evaporation?

I have been recently thinking about how the water level of Lake Mead keeps dropping due to its high water evaporation rate brought on by recent years of historical drought conditions. The continuous ...
  • 327
4 votes
1 answer
69 views

Is it possible to reliably infer the anthropogenic contribution to the post-industrial rise in $\ce{CO2}$ from $^{14}\ce{C}$ observations?

There have been several papers [failures of the review process] that have argued that the post-industrial rise in atmospheric $\ce{CO2}$ is primarily a natural phenomenon, or have sought to minimise ...
1 vote
0 answers
68 views

Urban heat island effect during winter time?

Say a given populated area is considered an "urban heat island", this would mean that during summer, temperatures will be higher in that area. But what about winter? One could argue that ...
0 votes
0 answers
38 views

How does carbon dioxide accumulate in the upper atmosphere if it is heavier than air [duplicate]

I am not a scientist but how does carbon dioxide make its way to the upper atmosphere form fossil fuel burning if it is heavier than oxygen (air), especially as the air is thinner in the upper as you ...
  • 31
0 votes
0 answers
29 views

Is the current tropical depression headed towards Taiwan unusually early for the season? (April 7, 2022 at 4.0N 148.0E)

Taiwan's Central Weather Bureau's Current Western North Pacific Tropical Cyclones page shows a tropical depression with the following information: TROPICAL DEPRESSION TD02 Position 061800Z at 4.0N ...
  • 7,108
7 votes
3 answers
182 views

Why is my intuition wrong about the significance of a few degrees' temperature rise?

There has been a lot discussed about historical and future global temperature increases of a few degrees (e.g. the goal of limiting the rise this century to 1.5 °C or 2 °C). Intuitively, I'm tempted ...
  • 171
0 votes
2 answers
46 views

What are some reasons for Aridification

I an working on a Si-Fi world, and am looking for ways that an area would, over a long timescale, lose the majority of its water. I understand how the lose of vegetative cover due to climate changes ...
  • 123
3 votes
1 answer
85 views

What is the unit impact of $\small\sf{CO_2}$ on global temperature?

I'm trying to find the impact of X tonnes of CO2 on global temperature so I can infer the unit impact of CO2 on temperature. While we know there is a positive correlation, I can't seem to find a study ...
  • 133
7 votes
1 answer
65 views

Why aren't diatoms' shells used as a temperature proxy, but foraminifera shells are?

Changes in oceanic oxygen isotope ratios (18O to 16O) are reflected in the shells of ancient foraminifera. However, I have not read of diatom shells being used, despite the fact that they were (and ...
1 vote
1 answer
36 views

Is there more leaf litter in tropical decisuous forests or temperate deciduous forests

I want to run an experiment: collect leafs in forests to try to stabilize them and prevent from rotting and emitting greenhouse gases. I live in an area with temperate deciduous forest and have a fair ...
13 votes
7 answers
3k views

Why don't errors accumulate in climate models when the time horizon increases?

First of all, I want to add the disclaimer that I am not a climate sceptic or anything. I honestly want to understand this phenomenon. Hopefully, someone can also go into the details as I do have ...
17 votes
5 answers
3k views

Could the Paleocene–Eocene thermal maximum have been caused by intelligent life forms?

I was intrigued to learn recently of the Paleocene–Eocene thermal maximum from this blog of John Baez. For those who haven't seen, it's the sharp spike labelled "PETM" in this graph (from ...
  • 271
1 vote
2 answers
131 views

Does use of hemp oil for transport fuel produce a net positive CO2e?

A Facebook post containing an image from @TheGretaEffect and actual post can be found here mentions the development of a plane build entirely of hemp products and fueled with hemp oil. I was thinking ...
5 votes
1 answer
84 views

Is Global Mean Surface Atmosphere Pressure changed long-term by global warming?

We know the Global Mean Temperature is increasing due to climate change. But for the Global Mean Atmosphere Pressure, can we see an obvious trend?
  • 51
0 votes
1 answer
96 views

Is New York bound to go underwater?

The latest IPCC report basically says that whatever we do, NY is a doomed city with no hope to remain above water due to climate change (among many other settlements) (TS-54). Why is the media not ...
1 vote
3 answers
163 views

How much has Earth warmed since preindustrial times, after all?

Call it hair splitting, if you want, but I see at least three numbers in the latest IPCC report (e.g. on pages 7-51–7-52). The first one, "the total human forced GSAT change from 1750–2019", ...

1
2 3 4 5
13