Weather is an all-encompassing term used to describe all of the many and varied phenomena that can occur in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few days in length. Average atmospheric conditions over significantly longer periods are known as climate. Usage of the two terms often overlaps and the concepts are obviously very closely related.

Basic mechanism

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Weather phenomena result from temperature differences around the globe, which arise mainly because areas closer to the tropics, around the equator, receive more energy from the Sun than more northern and southern regions, nearer to the Earth's poles.

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Had about enough of this weather, let's bring out Spring
KoningLaurens (Laurens van Laren) Sun, 03 Jan 2010 10:52:12 -0000
Had about enough of this weather, let's bring out Spring
@timmyhutton shock horror the weather changes ;) you're obviously going to do a Reading!
jessforpm (Jess Christ Charman) Sun, 03 Jan 2010 10:52:11 -0000
@timmyhutton shock horror the weather changes ;) you're obviously going to do a Reading!
That is really cold out there, brass monkey weather!
bswain (Bob Swain) Sun, 03 Jan 2010 10:51:44 -0000
That is really cold out there, brass monkey weather!
Was planning to go back to aberdeen town sometime soon... But don't think the weather wants me too?
Georgiebub (Georgina Benton) Sun, 03 Jan 2010 10:51:39 -0000
Was planning to go back to aberdeen town sometime soon... But don't think the weather wants me too?
So where is the snow that was predicted? Damn weather people building my hopes up and then dashing them with sunny blue skies
natalie_online (Natalie Ainsworth) Sun, 03 Jan 2010 10:51:20 -0000
So where is the snow that was predicted? Damn weather people building my hopes up and then dashing them with sunny blue skies
The weather's quite quality outside
MrioSdhu8 (Mario Sidhu) Sun, 03 Jan 2010 10:51:17 -0000
The weather's quite quality outside

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