Thursday, September 18, 2008

Convective inhibition

Early in the morning, a band of low clouds prevent the insolation of the land beneath. Later in the day (the image on top), this region remained stable to convection while around it the air became unstable.

Saturday, September 13, 2008

A perfect example of ingredients at work!

Satellite can give a great view about the ingredients needed for convection: instability, moisture, some lifting In the image there is an airmass of stratus clouds, with some inhibition (CIN) for convection. But there is a spot where some convergence at the surface (lifting) helped to overcome this CIN, a nice cell developed, and the outflow, symetric, produced some stable clear air around. Ian Bell found this great image in the internet.