J. Braun
United Airlines operates flights daily over the top of the world. There are many safety and regulatory requirements which must be taken into consideration when planning these operations. Standard aviation weather analysis no longer covers the many variables that are associated with polar operations and reliance on many other sources of information are now required to ensure safe flight.
Click http://ams.confex.com/ams/88Annual/techprogram/paper_135883.htm to go to the recorded presentation given by Michael Stills, United Airlines, Chicago, IL at the 5th GOES Users Conference in January of 2008.