Hi Jian,

Here are two links to the interpretation of SkewT plots:

http://www.atmos.millersville.edu/~lead/SkewT_HowTo.html

and

http://weather.unisys.com/upper_air/skew/details.php

I guess mixing height can be determined from the variables as elicited by a SkewT plot.

Success with your balloons,

Frank

Thank you, Frank