EL TEMPS ATMOSFÈRIC

http://www.juicygeography.co.uk/downloads/flash/highpressure.swf

http://www.juicygeography.co.uk/downloads/flash/lowpressure.swf

 http://www.educaplus.org/cat-74-p1-Atm%C3%B3sfera_Ciencias-de-la-Tierra.html