Space/Science — HabitableZone

Space/Science » in reply to "Blue skies, smilin' at me...Nothin' but blue skies from now on!"

re:why is a desert dustier than a swamp?
dtb — (archived)

>Why would there be more dust in the atmosphere on Mars than Earth? (paraphrasing)

I don't know why I'm bothering to respond, but....

For the same reason that there is more dust in the air over a desert than a bog.

For the same reason that there is more dust over a dry construction site than one where they have misted down the dirt.

For the same reason that there is more dust over dry silty soil (ie, fine particles) than there is over dry gravel, or dry exposures of bedrock.

FOr the same reason that there is more dust in the air when it hasn't rained in a week than right after a shower.

In short, because Mars has a dry atmosphere covered with ultra-fine, ultra-dry dust!!!

If Mars had a thicker atmosphere, there would be even more dust, that's true. The issue isn't that its atmosphere is better at raising dust, the issue is that it HAS MORE DUST TO RAISE.

OK, I've said my piece.

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