Questions tagged [climate-change]

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

Filter by
Sorted by
Tagged with
1
vote
1answer
68 views

Why has the average low for the hottest months in Clearwater Florida about 5 degrees higher than the historical average?

Look up Clearwater Florida on Wikipedia and it gives you the average low for the Months of July and August as being 74.2F. About 3-4 years ago I picked up running as a main hobby and the temperature ...
2
votes
0answers
38 views

How is OLR power of the atmosphere distributed with altitude?

The OLR (outgoing longwave radiation) from the top of the atmosphere to space is composed of radiative energy emitted by the atmosphere at all altitudes, as well as the surface. How is the radiative ...
13
votes
3answers
4k views

How will sea level rise be distributed across the globe?

Sea level rise from melting glaciers will not be uniformly distributed across the globe. However, it isn't clear to me what places will have the most and least extreme changes in sea level rise. I ...
3
votes
1answer
203 views

Making sense of the math of climate change

Let me state upfront, I'm not arguing the existence of climate change, just trying to clarify my own understanding of something that doesn't make sense to me yet. With apologies for the layman's ...
0
votes
1answer
625 views

Hypothetically, would digging a big trench from the ocean and flooding desert areas be a bad solution to combatting sea level rise? [duplicate]

My question is basically the title. Ignoring most of the feasibility of the enormous engineering and earthmoving requirements (I guess I mean to say, given an unlimited budget) in very hot areas, ...
5
votes
2answers
1k views

Are greenhouse effect and ozone depletion correlated?

I have read that these phenomena do not have an interaction. However, I would think if CFCs cause the ozone layer to thin, and more UV radiation enters the Earth system, the Greenhouse Effect would ...
9
votes
2answers
2k views

Could this study “totally dismantle” Global Warming claims?

Could this study "totally dismantle" Global Warming claims? That's the assertion made in the article ‘Bombshell’ climate-change study could totally dismantle the claim humans are causing global ...
1
vote
0answers
140 views

Is there a formula to calculate shoreline length or water position from ocean?

Assuming in the past the water of the oceans were lower does it also mean that the water was not where it is right now?
 If yes, then how do we calculate approximately where the water would have been ...
2
votes
0answers
61 views

Good practices and pitfalls when fitting models $y = f(weather)$ and predicting $\hat{y} = \hat{f}(GCM)$

I've got a phenomenon of interest, $y$. It is determined in large part by the weather. Naturally, one becomes interested in what climate change may do to $y$, so one fits a model of the form $y = f(\...
5
votes
2answers
909 views

Why are CO2 sensors so expensive when CO sensors aren't?

Please excuse me if Earth Science is not the correct place to ask this question. I read a New York Times article about increasing CO2 levels in the atmosphere: "Carbon in Atmosphere Is Rising, Even ...
5
votes
0answers
392 views

What is the “global mean surface temperature change estimate” an estimate of?

NASA publishes what it calls an "estimate" of the Earth's global mean surface temperature. Digging through papers I've been able to find some documentation of how these numbers are computed, but I ...
2
votes
1answer
112 views

Are there datasets like the global land-ocean temperature index for land surface temperature only?

I have no background in climate science, but I've become interested in explanations of the so-called "global warming hiatus" from 1998-2013. One explanation that people seem to think is convincing ...
5
votes
3answers
3k views

Is the Unified Theory of Climate (Nikolov & Zeller) compatible with the AGW/GHG theory in any respect?

Nikolov & Zeller have published a paper concerning what they call The Unified Theory of Climate. https://www.omicsonline.org/open-access/New-Insights-on-the-Physical-Nature-of-the-Atmospheric-...
1
vote
2answers
131 views

Why is it good scientific practice to 'build' a 'control Earth' from models, and where else do we 'build' controls?

Usually, when data is collected in an experiment, scientists have a control. Experiments are seen as flawed without controls. I am just curious as to where else scientists have 'built' controls using ...
5
votes
3answers
2k views

Can ice caps reform if they disappear?

Excuse my ignorance. I'm under the impression that there are various types of ice at the poles, but I don't know the difference or the significance of each type, so, in terms of whatever is actually ...
7
votes
1answer
196 views

Could a “sunbrella” parked at L1 block enough solar energy to counter global warming?

What part of the Earth should be "shaded"; the poles or the equator? Since the size of the sunbrella would depend on its ability to reduce certain wavelengths of radiation; what material or ...
3
votes
0answers
48 views

How can I analyze how environmental conditions are related among different sites?

I want to analyze how the environmental conditions along the migratory route of a bird are related to the environmental conditions found at the breeding ground (which it is at high latitudes and we ...
12
votes
3answers
2k 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 ...
2
votes
1answer
117 views

Why do values stored in data files, such as climate model output, appear to be high?

I'm in doubt of some values for future scenarios of climate change that were downloaded from http://www.worldclim.org/version2. For example, the NCAR circulation model for ...
4
votes
2answers
824 views

How do we apply the Stefan-Boltzmann equation to radiative heat transfer from/to CO2 in the atmosphere?

If we can use the Stefan-Boltzman equation to quantify the radiative flux leaving a solid body due to emission of radiation and to do it properly for a solid body we need to include the emissivity ...
-4
votes
1answer
411 views

Experimental testing to falsify the theory of the greenhouse gas effect [duplicate]

Irrespective of how accepted any scientific theory happens to be it is often worth thinking about a possible experiment to test said theory and perhaps falsify it. If we wanted to do this for the ...
3
votes
0answers
54 views

Understanding climate in 100 year intervals

I find it hard to find information about how the Earth's past climates have been deduced. I know there are archaeological ways of seeing CO2 levels from the past, but to what range can the CO2 levels ...
1
vote
1answer
89 views

Is the work “The photochemical origin of life” ,by A.Dauvillier, in line of principle still valid today? [closed]

Dauvillier, through his studies, demonstrate that a rise of 2 degrees, of the average temperature of the planet represents a point of no return, beyond which an irreversible process would trigger, ...
0
votes
0answers
47 views

Why Do Carbon Dioxide Levels Vary Seasonally? [duplicate]

I was reading this article today, and I saw this chart of atmospheric carbon dioxide levels for the past year: The chart shows a decline in atmospheric carbon dioxide levels from roughly June-October,...
9
votes
1answer
7k views

CO2 emissions per calorie (food)

I have seen several lists with CO2 emissions by weight for producing several different food products. I think this is an interesting consideration, and possible argument for vegetarianism/veganism. I ...
0
votes
3answers
521 views

Which physical parameters can we actually measure to confirm the existence of the Greenhouse Effect (GHE)? [closed]

The theory of a GHE in a planetary atmosphere is rather well known. Many claim it is no longer a theory but actually proven as a fact. However I have been reading a lot of things Richard Feynman said ...
0
votes
3answers
157 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$...
-6
votes
1answer
233 views

How does an incease in the trace gas CO2 in the atmosphere make the earth hotter? [duplicate]

OK, you have all seen the question before BUT let's make the challenge a little different this time. I want you to use the Feynman Method ! You have to explain it simply, preferably just text but one ...
10
votes
3answers
344 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 ...
3
votes
2answers
164 views

Current temperature increase VS decrease during the little ice age

Looking at the following temperature reconstructions i have two questions (source: wikipedia): Why is the y-axis centered around -0.2 °C? Why are the consequences of the current temperature ...
2
votes
1answer
127 views

What is the impact of climate change on tropospheric ozone production and vice versa?

I know ground ozone reduce the photosynthesis rate of vegetation and could lead to increase respiration and hence more CO2 in the atmosphere, contributing to global warming. But what is the opposite? ...
6
votes
1answer
68 views

What is meant by controlling and reacting factor?

I'm interested in issues related to Global warming and therefore started to read about it from this website --> Link As I was reading I got stuck in the third paragraph of ...
3
votes
1answer
396 views

How does the existence of a Greenhouse Gas Effect (GHE) in the atmosphere affect the tropospheric lapse rate? [duplicate]

I am restricting my consideration, for the moment, to just the troposphere. With regard to our understanding of the GHE do we predict that an increased GHE due to increasing CO2/Water/Methane will ...
7
votes
1answer
107 views

Is climate change homogenous globally

When searching for continental trends in climate I could not find clear sources broken down to regions or continents. My question is: is it proper to talk of global warming as a homogenous trend or ...
3
votes
1answer
69 views

How would this experiment's different particle types produce atmospheric reflectivity?

The MIT Technology Review news item Harvard Scientists Moving Ahead on Plans for Atmospheric Geoengineering Experiments discusses a proposed experiment to study in a carefully controlled way the ...
3
votes
1answer
111 views

Educational book on science of climate change with action items?

I originally posted this over on Sustainability.SE and someone suggested I try asking over here. Can anyone recommend a book or books, intended for a non-scientific audience, which covers some (or ...
8
votes
1answer
235 views

“New” cloud types: Can they be used as markers for climate change observations?

This question was originally posted on Physics SE, (now deleted) but I think this community is a better fit. This article "New" type of Clouds, reports that a revision to the International Cloud ...
3
votes
0answers
110 views

Are there any energy budget diagram showing separate day/night and summer/winter values?

I particularly like the classical energy budget diagrams like that produced by Trenberth et al in 2009. They are simple to understand and show all the various heat transfer mechanisms operating on the ...
4
votes
2answers
458 views

What are the formulae for calculating the thermal heating effect of back radiation in greenhouse gases?

The ability of greenhouse gases to trap heat and re-radiate some of it back to the original heat source looks like a useful thermal property which could possibly be incorporated in things like double ...
7
votes
2answers
417 views

Methane leaks from biogas

Lately, I have been thinking about biogas and the impact leaks might have on climate. Biogas is mostly methane, and we know that methane has a much higher global warming potential than $\sf{CO_2}$. ...
5
votes
1answer
895 views

Rate of climate change with and without humans?

I was watching this interview of Bill Nye on Fox News. Bill claimed that the earth's climate is never in equilibrium, but human activity has caused the gradient to be much higher than it would've been ...
8
votes
4answers
3k views

Carbon dioxide on Mars, Venus and Earth

Earth's atmosphere is 0.038% carbon dioxide. Mars's atmosphere is 95.3% carbon dioxide. Venus's atmosphere is 96.5% carbon dioxide. If Earth's climate is controlled by CO2, then why is Mars so cold ...
1
vote
2answers
82 views

Is it possible that we can reduce climate change given our current actions?

Today, there are some scientists and people that are working on projects that will reduce the production of CO2 levels and effects of climate change. I'm very confused on whether it is possible for ...
3
votes
1answer
388 views

How was it possible that CO2 levels were higher nearly 650,000 years ago?

Recently I've been working on a debate for climate change and I'm working on a rebuttal statement but then I came across many different sites that claimed that there were higher CO2 levels before ...
3
votes
3answers
235 views

Relative world carbon footprints by nation?

Are there studies showing the relative positions carbon footprints of various countries? which one produce how much greenhouse gases? I'm interested in comparing developing and developed countries ...
6
votes
2answers
539 views

Why does the emission of aircrafts at higher altitudes have a greater effect on the climate?

I am trying to understand the footprint of a flight. First Wikipedia says (without quoting a source): The level and effects of CO2 emissions are currently believed to be broadly the same ...
5
votes
3answers
3k views

Would adding sulfur dioxide to the atmosphere have a global cooling effect?

There is reasonable evidence to suggest that the Earth is warming. The most probable cause appears to be increased CO2 in the atmosphere, which has been reasoned about for quite some time. There ...
2
votes
0answers
47 views

Topographical model of a wind-farm [duplicate]

Has anyone ever built and tested a topographical model of a 200 mile radius with a wind-farm in the middle to see how much wind speeds and wind direction change when the farm is active compared to ...
5
votes
2answers
297 views

Is non-randomly-sampled historical data representative?

I'm a global warming skeptic, and one of my concerns is the accuracy of historical global temperatures. Since these temperatures weren't sampled at random locations or gridded points, can they be ...
5
votes
0answers
357 views

How accurate are climate models? [closed]

"All models are wrong but some are useful". I am not against the concept of anthropogenic climate change because climate models may not be strong source of information for climate change. Observation ...