Timeline for Effective Temperature of a Planet and Surface Temperature due to Greenhouse Effect
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| Jun 7, 2019 at 10:09 | comment | added | Deditos | It depends where the perturbation comes from (i.e., net solar, surface, atmosphere). If it's a GHG increase then initially the atmos is absorbing a greater fraction of the same surface emission (the surface hasn't warmed yet). The input at the bottom is unchanged but the net flow through the atmos is slowed, so the output at the top is reduced (temporarily). In this cartoon equilibrium, increasing GHGs is like adding additional layers. | |
| Jun 5, 2019 at 23:33 | comment | added | MattGeo | This is helpful and I actually really like the chart with the arrows you shared. I am grasping it conceptually much more. Also you cleared up the issue for me with the diagram I provided. In principle though, when the planet actually is disturbed from thermal equilibrium and begins to warm, is it because the same fraction of a larger amount of infrared is being absorbed? For example, say the atmosphere traps 20% of infrared. 20% of 1000 radiation units is larger than 20% of 100 radiation units. | |
| Jun 4, 2019 at 22:09 | history | answered | Deditos | CC BY-SA 4.0 |