Here is one of the runs they did last year: http://flightaware.com/live/flight/NASA747/history/20130717/0612Z/NZCH/NZCH http://flightaware.com/live/flight/NASA7

Here is one of the runs they did last year: http://flightaware.com/live/flight/NASA747/history/20130717/0612Z/NZCH/NZCH http://flightaware.com/live/flight/NASA747/history/20130717/... The arches are when they are doing their observations. Edit: For some reason the map is centering over the Atlantic when I open the link, the flight path is actually from New Zealand if you can't see it to start with.