The GPS-NRT datastream is used to create an European IWV map.

The map is produced using ground based GPS. The ZTD estimates are converted into IWV using nearby SYNOP stations.

  • The map below shows an animation of the last 24 hours.
  • The map is updated every hour at HH:30.
  • Wind barbs from 2km height, wind information taken from wind profiler, AMDAR and radiosonde ascents
  • The purple squares are lightning events observed by ATD
Animation is provided by the AniS applet Developed by Tom Whittaker of the University of Wisconsin

Note : UNIX/LINUX users browsing with Mozilla/Seamonkey should clean regularly the ${HOME}/.java/deployment/cache/javapi/v1.0/file/