Questions tagged [climate-change]
Questions about changes of the climate system, including questions about global warming.
480
questions
2
votes
1answer
71 views
Using Enhanced Rock Weathering in the Sahel Region of Africa
A recent Guardian article "Spreading rock dust on fields could remove vast amounts of CO2 from air" has gotten some attention in the nongovernmental and UN organizations working in the Sahel ...
-1
votes
0answers
70 views
What are the feedback loops in climate regulation?
There are multiple feedback loops in climate regulation, for example:
warming - melting ice - reducing albedo - increasing solar absorption - warming.
warming - melting permafrost - releasing carbon ...
2
votes
1answer
188 views
Could we sequester CO$_2$ by dumping forests in deep oceans?
We know that trees are the most efficient "tool" we have to get CO$_2$ out of the air, but the problem is that most of their fixated CO$_2$ will naturally reenter the carbon cycle through ...
5
votes
1answer
104 views
How does the act of producing animal feed from the leftovers of a process result in a negative carbon footprint? [closed]
According to this source, it is claimed that (emphasis is mine)
At Arbikie Distillery in Angus, scientists claim to have developed the world's first "climate positive" gin. By using garden ...
3
votes
1answer
1k views
Are we going to enter a mini ice age by 2030?
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.
...
2
votes
0answers
64 views
Why don't they use balloons in ocean as battery? [closed]
We need more batteries, to store renewable. But why don't they just pull down big balloons in the ocean and let them go up when they need the power?
0
votes
1answer
70 views
Doesn't increased human activity add to heating the atmosphere directly?
My question relates to the fact that 1- the human population is continually increasing, and 2- everybody is constantly 'doing more stuff' (or causing more to be done). So doesn't 'more people doing ...
0
votes
0answers
28 views
Raised Dew Point from global warming: will cool weather burning off (for fuel load reduction) get harder?
Dew appears to be a factor in fire behavior and management, slowing and extinguishing fires in cool conditions. Higher temperatures mean less dew. Given the importance of fuel reduction fires during ...
2
votes
1answer
69 views
Is there any animation to demonstrate if the sea level rise up?
I found a very cool video here:
Draining Earth's oceans, revealing the two-thirds of Earth's surface we don't get to see
https://www.youtube.com/watch?v=-uOwv_Krqk8&feature=emb_logo
However, I ...
1
vote
1answer
88 views
How would I simulate the effects of the Antarctic ice sheet being deleted on Earth's climate?
This is a follow-up to my question If its ice sheet were removed under modern atmospheric conditions, what climatic and ice-sheet equilibrium would be re-established over Antarctica?. As it has ...
0
votes
0answers
45 views
Providing Edgar emission using prep_chem_source for tracers (CO2-CH4)
I am working on CO2 and CH4 by WRF-CHEM, for providing my anthropogenic emission from Edgar data base, I'm going to use the Prep_chem_source App.
I would like to use Edgar data emission (as my ...
0
votes
1answer
224 views
The Medieval Climatic Anomaly
Trying to understand this question, posted to me by a lecturer at University:
"The Medieval Climatic Anomaly was distinctive in terms of the
prevailing climates and forcing mechanisms operating ...
8
votes
1answer
2k views
What would it be like to live in an ice age?
If you were born in the most recent ice age, how different would your life be compared to how you live it today? Furthermore, if humans currently lived in an ice age, how would it affect life today?
13
votes
5answers
286 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 ...
3
votes
2answers
48 views
Has recent drop in airline flights over the US had a measurable warming effect as was found after 9/11?
I recall that after 9/11, when all US flights were canceled, there was a statistically detectable bump in average temperature. Something about jet contrails disappearing for 4 days. Has anything like ...
6
votes
1answer
220 views
Carbon's role in ocean acidification
This might seem like a basic question, but I'm a little confused about the effects on ocean acidification of different carbon compounds.
I have heard that increased levels of carbon dioxide in the ...
2
votes
0answers
25 views
Correlation of Global Stratospheric AOD with Global Mean Temperature Anomaly
I'm trying to understand at a high level the relationship of aerosols to the global temperature and I'm new to these concepts.
I have Stratoshperic mean global AOD data from:
https://data.giss.nasa....
5
votes
1answer
64 views
Is lower tropospheric temperature relevant to measure global warming?
So according to this,
Global temperature update
Last month, the lower tropospheric temperature dropped 0.28 $\sf^\circ$C from February to March, which seems like a huge drop even if it's due to ...
11
votes
2answers
622 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 ...
5
votes
0answers
60 views
What is the radiative forcing change associated with the Chinese 2020 COVID lockdown, and how does this affect the circulation?
The lockdown imposed in China and other countries in response to the COVID 19 pandemic has resulted in a dramatic change in air quality. Factories and transport systems have shut or continue at ...
1
vote
4answers
398 views
Can anyone explain the 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 ...
-3
votes
2answers
210 views
How has the increase in global CO2 been attributed to an anthropogenic cause?
How has the increase in global CO2 been attributed to an anthropogenic cause?
It would seem to me that this could be definitively determined on the basis of placing gas spectrometers on the exhausts ...
9
votes
6answers
3k views
Does climate change cause increase in CO2?
My main question is how do we know that increase in global temperature does not CAUSE an increase in CO2 concentration?
I am trying to develop my mental model of what's going on for the climate ...
1
vote
2answers
182 views
USA and UK government report on plane emissions: 200% difference… which is right?
The report's respective ratio of 1 passenger car vs one long haul plane are 40% versus 110%:
Image 1 (DEFRA):
car = 171 plane = 195 (110%)
Image 2 (EPA):
car = 4096 plane = 1760 (40%)
If the ...
4
votes
2answers
89 views
How do the slow and fast carbon cycles influence climate change?
I understand that the slow and fast carbon cycles are involved in the transport and storing of carbon, but how much of an influence do each of these cycles have on climate change, and how?
12
votes
3answers
943 views
To stop anthropogenic climate change, is it necessary to stop extracting petroleum and start pumping carbon under ground?
The amount of carbon (C) on Earth is constants. As far as i understand, all carbon that is not found in the atmosphere or the oceans in the form of CO2 or CO is stored either in the biomass (plants, ...
4
votes
1answer
97 views
Would pollution really take a lot of years to disappear from the atmosphere once people stop producing them?
From a comment in another question here,
Oh, and a third factor: the added atmospheric CO2 does not magically
go away once all the fossil fuels are burned. It will stay in the
atmosphere for ...
8
votes
2answers
869 views
Will global warming lead to agriculture in the Arctic?
From what I understand, global warming will make growing food a lot harder in areas like the American Midwest because temperatures will become too high for most crops. At the same time, Arctic (and ...
19
votes
1answer
6k views
Debunking scientific paper “Has global warming already arrived?”
I read the IPCC reports, I know global warming is happening and is man-made.
But as any skeptic should do periodically, I went to a few climate deniers websites and stumbled upon this peer-reviewed ...
3
votes
2answers
510 views
Is sea erosion the opposite of sea level rising (or rather, an adjacent phenomenon)?
Because I understand the mechanism of sea erosion as to take earth away from shorelines (and scatter it deep into the sea floor) and also to derive from climate crisis, I ask the following question:
...
15
votes
3answers
3k views
Is there any evidence for higher air pressures in the geological past?
I was curious about how the Earth's overall air pressure has varied over time, and tried to take a look around the internet. However, Google pops up a lot of sites with questionable science proposing ...
17
votes
2answers
1k views
Simple Climate Models that Predict Climate Change
I have a physics/maths background, and to me the most convincing evidence of a scientific fact is often a very simple model that gives reasonable results. A simplified model, which you can fully ...
5
votes
4answers
5k views
Looking for evidence against some points raised in Ivar Giaever's speech on climate change
I just listened to Ivar Giaever's speech on the climate change, and he raised following points which seem significant to me:
Temperature differences y/y are very small compared to natural
variation ...
10
votes
3answers
405 views
Did climate cool down when underground hydrocarbons stocks formed?
As far as I understand, the dominant theory of modern climate change says that recent warming is mainly caused by the massive burning of hydrocarbons that used to be stored in solid form mostly ...
4
votes
1answer
65 views
What would the average temperature be if there were no greenhouse effect from water vapor? [closed]
CO2, methane and other gases contribute to the greenhouse effect.
But most of the greenhouse effect is caused by water vapour in the atmosphere. There is always a lot average moisture present, but it ...
5
votes
1answer
109 views
Why does climate change generate desertification?
According to IPCC:
Climate change can be a significant driver of desertification and land
degradation and can affect food production, thereby, influencing food
security.
Source: IPCC
My ...
7
votes
2answers
195 views
How much heat was released from the 2019-2020 Australian bush fires?
How much heat was released from the 2019-2020 Australian bush fires? And is that likely to have a measurable impact on global atmospheric heat content?
Maybe as a secondary question: How much impact ...
7
votes
2answers
112 views
Hydro-meteorological hazards vs climate extremes
I always saw the definitions of "hydro-meteorological hazards" and "climate extremes" as almost interchangeable in the climate change and natural hazards literature. The other day I was discussing ...
1
vote
4answers
200 views
What exactly is a published climatologist?
I am trying to get Gallup to do a scientific poll of published climatologists to greatly strengthen the credibility of the 97% consensus.
This must start with very excellent formal definitions of ...
1
vote
0answers
69 views
How can we best objectively quantify climate change mitigation urgency? [closed]
Quantifying climate change mitigation urgency seems to have three aspects:
(1) Green House Gas reduction targets required to meet a specific goal such as 2C.
The first guesstimate seems to be zero ...
4
votes
1answer
71 views
Which method is used to calculate tonnes carbon from tonnes CO$_2$ equivalents of GHGs?
It appears that all GHGs are first translated into Carbon Dioxide Equivalents (CDEs) and that calculation is fairly straight forward.
Many report in tonnes of Carbon instead of tonnes CDE. I am ...
1
vote
0answers
37 views
Help in understanding this. Is this just an empirical observation on climate sensitivity?
I was reading this on realclimate.org.
My question on the below is this. Physics can tell you the radiative forcing of CO2, which is $\small\mathsf{5.35ln(Cnew/Cpreindustrial)}$. This tells you how ...
37
votes
6answers
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,...
39
votes
7answers
12k views
COā 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 COā.
I never ...
4
votes
1answer
91 views
What is the second thermometer in the image from the Esperanza Antarctic temperature record?
Today, the Argentinian meteorological service tweeted about a new temperature record for Antarctica of 18.3Ā°C, made on the Espezanza peninsula. This was subsequently reported by many other sources.
...
2
votes
4answers
240 views
How to design an experiment to quantify back radiation from atmospheric carbon dioxide?
Based on our current knowledge of CO$_2$ and current instrumental techniques, how big would a laboratory sample of air with 400ppm of CO$_2$ need to be in order to quantify the back radiation from CO$...
2
votes
1answer
95 views
What are the affirmations regarding the effects of climate change that have a high degree of consensus amongst climate scientists?
I have seen ample consensus amongst reputable scientists that the earth is getting warmer, and this fact is due to human activity (e.g https://climate.nasa.gov/faq/17/do-scientists-agree-on-climate-...
3
votes
1answer
89 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 ...
4
votes
2answers
91 views
Were there any plans or proposals for “unilateral geoengineering deployments” before this paper was publsihed?
I saw the catchy Phys.org news title Artificially cooling planet 'risky strategy,' new research shows and then looked at the open access article, in Nature Communications (14-Nov-2017 online) Impacts ...
5
votes
1answer
184 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 ...
