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phetsims / greenhouse-effect

"Greenhouse Effect" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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[Layer Model Screen] Change default surface albedo to 0.3 #364

Closed arouinfar closed 7 months ago

arouinfar commented 8 months ago

Currently, the default surface albedo on the Layer Model screen is 0.2. This matches the previous screens, but there we have the cloud to bring the overall albedo up to 0.3 to match Earth's average.

I think starting at a default of 0.3 would be more helpful. That way, the temperature of the topmost layer will match the blackbody temperature of the Earth (all else remaining constant). @jbphet please change the default of layerModelScreen.model.groundLayer.albedoProperty to 0.3.

Assigning to @jbphet, but deferring because development is currently paused.

jbphet commented 7 months ago

This is done. I verified that with no layers it goes to the same temperature as the Photons & Waves screens when there are no greenhouse gasses. Closing.