"Skew-T Log-P" by XKCD comic (mirror bot @xkcd ) - A Skew-T log-P diagram usually records weather balloon telemetry as temperature and dew point at all the altitudes observed in the flight. These are used by meteorologists as a part of weather forecasting and by glider pilots for identifying atmospheric lift conditions. Now completely misrepresented as only XKCD can... xkcd.com/3032/ #weather #aviation #avgeek #oops #WTF