Sentences with phrase «dry rocky planet»

I am making the point that the surface temperature would be more like 299K if, for example, the emissivity of the dry rocky planet without water or vegetation were 0.75 rather than the 1.0000 value used for the black body temperature.

Firstly they don't calculate correctly the surface temperature for a GH free atmosphere because they still leave non-existent clouds shading the surface in their calculations, and they don't reduce the emissivity to a realistic value for a dry rocky planet.

Why did they assume emissivity of 1.0000 for a dry rocky planet?

Not exact matches

Dry, rocky Vesta, which lies about 38 million miles closer to the sun than Ceres, can be considered the smallest member of the terrestrial planets — the family that includes Earth, Venus, Mars, and Mercury.

My value of 0.75 (giving a surface temperature of 299K where albedo and atmospheric absorption are zero) may even be too high for a rocky dry planet without water, vegetation or greenhouse gases.

and if they had used a more realistic emissivity for a dry, rocky planet — say 0.88, then they would have got a temperature of 287.58 K which is close enough to what is the existing mean temperature with GH gases that are thus doing no warming at all.

And in fact, research shows that the highest land - surface temperatures recorded on the planet are almost always in places that are dry, rocky, bare, and dark - colored.