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40
votes
3answers
7k views

How do 'greenhouse gases' let heat in, but not let it out?

That honestly doesn't make any sense to me. How could heat pass through a gas one way but not the other? Its not like our upper atmostphere has a bunch of doors that can only open one way. To me, that ...
5
votes
2answers
219 views

Why is ozone a greenhouse gas if it absorb UV radiation?

Ozone is considered a greenhouse gas, even though it absorbs shortwave (UV) radiation from the Sun, which does not fit with the definition for greenhouse gases, where they are supposed to: "absorbs ...
3
votes
1answer
88 views

The atmosphere and the dispersion of greenhouse gases

I have been researching everywhere. At what level of the atmosphere do carbon dioxide and other greenhouse gases occur? I can't get a straight answer and am frustrated...
7
votes
1answer
63 views

In the past, why did the levels of individual greenhouse gases rise and fall at the same time?

According to ice core samples from Vostok in Antarctica, methane and carbon dioxide levels seem to have risen and fallen at around the same time over a 450 thousand year period. I was unable to find ...
3
votes
1answer
67 views

Calculating 30% less solar energy. Provided the math is right, would there have been liquid water on Earth?

The Sun is estimated to have had a solar luminosity about 30% lower when the solar system was formed. Now if I assumed that Earth's albedo was the same as it is today, what ...
1
vote
0answers
30 views

Could we plant enough trees to offset greenhouse gas emissions? [duplicate]

In 2014, the world emitted 10 billion metric tonnes of carbon dioxide. A 50 year old oak tree forest sequesters 30,000 pounds of CO2 per acre. At that rate of sequestration per acre, offsetting all ...
6
votes
2answers
937 views

How can we calculate the temperature of the atmosphere, including the greenhouse effect?

I've been struggling to find equations that express how many degrees of warming greenhouse gases contribute, given the composition of an atmosphere (and solar insolation). What I did find was the ...
5
votes
2answers
366 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 ...
0
votes
1answer
82 views

Modified blackbody model of earth. What is wrong with it? [closed]

I have made a modified blackbody model that predict earth temperature distribution with high accuracy. It doesn´t include mass or gases. It is based on the initial thought that all energy above ...
2
votes
4answers
138 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.
4
votes
1answer
367 views

Methane remote sensing?

I'm trying to compile a list of remote sensing (Earth observing satellite) instruments capable of detecting methane in the atmosphere or near surface of Earth. After some search I have found: ...
4
votes
2answers
177 views

Can runaway methane gas emissions be an extinction level event?

Much ado has been made by a few petroleum engineers and global-warming alarmist about all of the methane gas trapped in frozen form, mostly on the ocean floors. The "What-if" scenario begins to play ...
4
votes
3answers
104 views

What are the major contributors to the amount of infra-red emitted by the earth?

From the answers from an earlier question, I learned that most of the solar radiation gained by the earth system (atmosphere, surface, and inner mass) is re-radiated back into space in the form of ...
6
votes
1answer
2k views

How to calculate the temperature of Earth's surface

From a dissertation, I read about the greenhouse gas's effect which make the surface warmer. It says, I quote: The greenhouse effect results in an average surface temperature of approx. $14^\...
5
votes
7answers
9k views

Is there any experiment to prove that CO2 with the atmosphere concentration can have greenhouse effect?

All gas molecules have the capability to absorb radiation energy. $\rm{CO}_2$ has much less capability to absorb radiation energy, comparing with water vapor. In Earth's atmosphere currently $\rm{CO}...
4
votes
1answer
193 views

How does the lifetime of methane vary in the atmosphere?

When reading about methane and its effect on climate, it is clear that its lifetime in the atmosphere is important to the global warming potential. However, the lifetime does vary from 9 to 15 years, ...
6
votes
1answer
89 views

What is the ratio of infra-red light absorbed by green house gases?

I know that some gases like CO2, N2O and CH4 absorb infra red radiation. What is the proportion or percentage of radiation absorbed by CO2 among all the gases?