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Questions tagged [climate-change]

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

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“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 ...
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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 ...
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2answers
412 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 ...
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404 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 $\sf{CO_2}$. ...
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1answer
830 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 ...
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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 ...
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81 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 ...
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1answer
317 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 ...
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194 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 ...
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398 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 ...
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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 ...
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0answers
45 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 ...
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2answers
278 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 ...
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346 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 ...
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1answer
121 views

Dataset for expected sea level rise in case of massive meltdowns (Greenland/Antarctica)

Around the time climate change became a 'public issue' (let's say shortly after An inconvenient truth came out), figures started getting published about the expected (global) sea level rise in case of ...
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4answers
2k 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 ...
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1answer
546 views

Will we even be burning fossil fuels in approx. 100 years? Worry about climate effects? [closed]

Do we really need to worry about the effects of burning fossil fuels when in all likelihood we won’t be burning fossil fuels in about a 100 years or maybe a little more? We will have technologies in ...
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1answer
74 views

What negative side effects would occur if silicate mining were used to artificially lower atmospheric CO2 concentrations?

As one half of the naturally occurring Carbonate–silicate cycle, carbon dioxide is naturally removed from the atmosphere by the chemical reaction: CaSiO$_3$ + 2CO$_2$ + H$_2$O → Ca2+(aq) + 2HCO$_3$-(...
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184 views

Had the climatologists predicted climate change as the deviations to both extremely cold and hot temperatures before?

Recently I read that the current extreme snowfall in northern temperate climate is caused by the increased evaporation due to the global warming. Had any scientist predicted these extremes before ...
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240 views

North Atlantic Oscillation (NAO) future prediction - Academic papers?

I am looking for academic papers which show future predictions of the North Atlantic Oscillation (NAO) by considering climate change and the various emission scenarios. Do you have any suggestions?
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Was Judea as desertified 2000 years ago as it is now?

The ancient fortress of Masada is currently so dry and forbidding that is hard to imagine anyone living there. Was the climate in the surrounding area more wet 2000 years ago, or was it as much a ...
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2answers
538 views

Climate change hoax [closed]

I see many scientific articles and newspapers out there saying that the climate change is happening. Yet, there are people who believe climate change is a hoax and a lie. But I haven't seen any '...
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1k views

Could Global Climate Change increase the average moisture in the air?

Given several hundred years, assuming global climate change results in the melting of the polar ice caps which leads to an increase in surface area of the oceans and an overall warming of the earth (...
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118 views

Atmospheric Carbon: Whence the discrepancy?

The news tells us that global carbon emissions are now more or less constant, as in the 2014-16 data points of Global carbon emissions flatline continues. On the other hand, the Keeling graph of mean ...
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1answer
80 views

What would be the sea level rise if all fossil fuel resources are burned?

Tokarska et al. (2016), a Nature article from a team of the University of Victoria, predicted a global temperature increase of 7±2.5°C and 17.2±2.5°C at the equator and at the poles ...
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717 views

Sea Level Rise due to Climate Change

I've been trying to make sense of the argument surrounding sea level rise and not getting very far. Those who claim that Sea Level Rise is insignificant generally assert that we have been unable to ...
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101 views

How will climate change affect planetary waves?

You can see planetary/rossby waves in the meanders of the jet stream. In short: If an air parcel moves from warm subtropics towards the pole, it will deviate toward the east due to conservation of ...
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2answers
149 views

Implications of recent 36 degrees Fahrenheit (20C) anomaly at North Pole?

This extreme difference from normal -- could it occur in climates that are warmer, making some places unlivable? Additionally, is there a reason why extremely cold places should expect to have ...
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1answer
147 views

On what authority are carbon credits issued? [closed]

Carbon Credits are a weird thing. Businesses can buy and sell them, and having enough carbon credits to offset your CO2 output suddenly makes you a Green Business. That being said, who issues Carbon ...
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2answers
892 views

How do the known abrupt climate change events fit into the xkcd Earth temperature timeline?

The xkcd "Earth Temperature Timeline" depicts the global average temperature during the past 20,000 years, based on the known data. We already have a question about the chart's general accuracy, but I ...
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1answer
207 views

How can every ton of CO2 cost 3 square meters of summer sea ice per year - quantitatively?

The Science article The average U.S. family destroys a football field's worth of Arctic sea ice every 30 years states: Every additional metric ton of carbon dioxide (CO2) puffed into the atmosphere ...
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4answers
163 views

Which greenhouse gas does the most damage to crops?

While there have been lots of studies looking at the effect of greenhouse gasses on increasing temperatures around the planet, my question is what are the effects of emissions on food production.
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1answer
123 views

Would ultra-efficient carbon sequestrion produce immediate results in global temperatures?

So, imagine a new technology were introduced that was incredibly efficient at carbon sequestration, lets say removal of ~90% of carbon in processed air and processing 10 tons of gas per minute (these ...
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176 views

What does this diagram mean?

What does the bottom picture represent when it says Lower Emissions (B1) and Higher Emissions (B2)?
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438 views

Any historical examples of destructive climate warming?

Summation: Local cooling climate changes, since the last ice age seem relatively common and all seem to cause significant harm to human population. But I can't find instances of the reverse, warming ...
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1answer
359 views

Ocean level rising, or the floor getting higher?

I randomly had a question pop into my head: "Why are oceans salty, but rivers are not?" This article seems to provide a plausible explanation: http://oceanservice.noaa.gov/facts/riversnotsalty.html ...
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Is this XKCD comic an accurate timeline of the earth's average temperature?

Apologies for the length of the image, which I found at http://xkcd.com/1732/. I'm mostly interested in the temperature line itself, both the historical data and the forward projections. The reason ...
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1answer
247 views

Coral growth keeping up with sea level rise?

On 11 sep 2016, the Australian Herald Sun placed an opinion piece by Andrew Bolt titled Drowning in cash: Pacific islands love this scare* about the $300 million** financial aid pledged by the ...
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1answer
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Please could you help me finding global warming video with ice melting in glass time messurment scene?

Few months ago I watched a video posted on reddit about climate change and in it there was scene showing glass of water with ice cubes. They were measuring how long it takes for ice to melt and then ...
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Will increased precipitation in Antarctica prevent sea level rise?

It has been suggested that global warming will lead to increased precipitation in parts of Antarctica. This would sequester water in the ice sheet, preventing sea level rise. However, the slope (and ...
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171 views

Are we changing Earth's weather with global warming?

I think that when the air heats up in the day, the radiation from the ground contributes way more to its heating at altitudes more than 300 meters above the ground than convection currents of air heat ...
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Why is Vladivostock so cold, while Dalian is so warm?

Over at SE History we're pondering the relation of temperature to Russian motives in establishing its Port Arthur colony in the late 1800's. Wikipedia says that Vladivostok is cold due to the ...
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volcanic effects on the climate during Pangaea

Which influence does the constellation of the continents have on the global climate? Was the biosphere more susceptible to climatic effects a volcanic eruption may cause during the Permian than it is ...
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Why is the increased albedo from cloud cover not expected to counteract global warming? [duplicate]

(I'm not saying global warming isn't a thing!) So, any fool will tell you that cloudy days are colder days, some times significantly so. When there are multiple cloudy days the temperature will ...
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281 views

A guide to how climate change will affect different countries [closed]

Let's assume that the climate change won't be prevented. I'm looking for a guide to show how the climate change will affect different countries. Specifically, I'm interested in comparing following ...
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124 views

Desert greening - Do we have long term (several decades) data on precipitation around the Sahara?

This article of desert greening states that some areas around the Sahara have seen increased plant growth in recent decades, caused by global warming. The causal chain would be warmer air can hold ...
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How were the sea levels around western Europe during the Medieval Warm Period?

The Medieval Warm Period (MWP) or Medieval Climatic Anomaly was a time from about 950 to 1250 when climate was warmer than in the timespans immediately before and after. My question is if this ...
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166 views

Need different temperature change data sets explained

Nasa's temperature record is showing temperature increase. When I confronted a climate change skeptic with it, he replied that the data has been tempered with, and that there are different data sets ...
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Does the amount of energy released from burning of fossil fuels have a measurable impact on global warming? [duplicate]

I understand that the main issue of global warming is greenhouse gases that trap solar energy instead of allowing it to bounce back into space. That being said, I've always had this impression or idea ...
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1answer
239 views

Is it possible that a reduction in vegetation is a cause of global warming?

A lot of people seem to believe that the entire cause of global warming is that humans are emitting lots of carbon dioxide. However, according to a source I found online (I accept it may not be ...