7
votes
About the actual radiative impact of greenhouse gas emission over time
There is no doubt that the sooner the mitigation effort happens, the greater will be its impact.
In other words, the impact on year 2100 climate of the sequestration of 20 billion tons $\ce{CO2}$-eq ...
- 17.6k
6
votes
Accepted
Why doesn't earth radiate at wavelengths where there is strong absorption?
Due to the large optical thickness, the outgoing radiation is emitted at stratospheric temperatures (the black-bodies indicated by ~210K temperatures).
Keep in mind that the black-bodies in the graph ...
- 3,152
5
votes
Effective Temperature of a Planet and Surface Temperature due to Greenhouse Effect
I think you’re not far off with your understanding, but maybe I can put in a few comments to make things clearer.
I often get confused because most diagrams for the Earth energy budget and net ...
- 3,940
5
votes
Why are solar longwave and terrestrial shortwave radiations neglected in radiation balance models?
It is because longwave (LW) correspond to a negligible part of the solar radiation and shortwave corresponds to a negligible part of solar radiation.
You can make an experiment yourself using NASA's ...
- 17.6k
2
votes
Is there a simple model for the interaction between greenhouse gases and infrared radiation?
My answer focuses on a "simple and easy to understand and roughly accurate model for understanding greenhouse gases". This is the same model used in a comment to your question.
The most ...
- 1,145
2
votes
Why are solar longwave and terrestrial shortwave radiations neglected in radiation balance models?
It is important to keep in mind the black-body approximated radiation for the Earth and the Sun. Notice how small the long-wave energy radiation is from the sun and how Earth's radiation peaks there. ...
- 13.5k
1
vote
Accepted
Estimate EPW AMY parameters from HRRR Analysis
The HOMER documentation for solar radiance Describes how Extraterrestrial Horizontal Radiation and Extraterrestrial Direct Normal Radiation are calculated. These are theoretical quantities that ...
- 131
1
vote
Why do clouds have positive climate feedback although they have a cooling net effect?
The cloud radiative forcing and the cloud feedback are two separate properties of the climate system that both operate through various cloud mechanisms. As that paper you cite shows in Table 5, ...
- 3,940
1
vote
Can a planet be heated by the green house effect to a temperature higher than that created by its incident and net absorbed, peak external radiation?
We'll take an example of Venus as a poster child for runaway greenhouse effect.
First of all, let's talk of day/night changes. At the surface level there is little to no change as Venus has an albedo ...
- 689
1
vote
Accepted
Can Horizontal Radiation Fluxes Contribute to Net Column Heating?
Yes, there are horizontal radiation fluxes. These can change the heating rate by 10-40 K hr$^{-1}$. They also change depending on the extent of the atmosphere you may be considering. One can also ...
- 8,684
1
vote
Effective Temperature of a Planet and Surface Temperature due to Greenhouse Effect
diagrams for the Earth energy budget and net radiation balance show more infrared leaving the surface than is ever supplied by solar radiation at the top of the atmosphere in the first place. Is this ...
- 2,369
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