Why is there humidity?

Question

yea ... where does it come from??? where what all bout it.... i was in europe and in macedonia i felt NO humidity, but here in the states it doesnt matter if ur under the shade or not its just HOT HOT HOT

Answer 1

Well, it comes from the tropics, which are under a constant beating from the sun, and the fact that the tropics are mostly ocean.

In the States, anything east of the Mississippi gets a lot of humidity in the warm season thanks to the Subtropical High. Mr. Subtropical High likes to sit over the Atlantic ocean and spew southerly wind at us. That southerly wind is warm, moist, tropical air.

so, basically, humidity comes from the water that encompasses most of the earth, and it is advected around regions by way of pressure systems.

Answer 2

Well, if you've got some water handy, some of the molecules will get bored, and leave.  They just take off into the air.  And that's humidity.  But if you don't have handy water, then it's dry.

Now, hot water molecules get bored more easily than cold ones.  I dunno - maybe they're entertained by the cold.  So colder places have less humidity than warm ones, even if there's the same amount of water available.

Check to see if you understood this properly.  If you did, you should be able to answer this question:

Which is faster, hot or cold?

Hot, of course.  You can catch cold easily.

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