3 votes

What is the relevant phenomenon behind Undulatus/Radiatus cloud formations?

There are a variety of cloud wave patterns, including radiatus, undulatus, and gravity wave clouds. Their causes are not mysterious, but fluid mechanics is rarely simple. When air rises and falls in ...
David Bailey's user avatar
  • 8,445
3 votes

Why we typically see no deeper into an atmosphere for an optical depth of 1?

When the authors say $\tau\approx 1$ they are giving a order of magnitude estimate i.e. $\tau$ is nearer to $1$ than it is to $10$ or $0.1$. On a log scale this would mean $\tau \lt \sqrt{10}$ and ...
John Rennie's user avatar
2 votes

Has a heavier atmosphere and the relocation of oil around the Earth had a measurable effect on the rotation of the Earth?

The effect is minuscule, because: Oil and gas and coal do not come from "the center of the Earth", they come from relatively close to the surface. The deepest oil wells in existence are &...
Michael Seifert's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible