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Empa's FLEXTRA GAW trajectories browser


page last modified:
29 Apr 2011

Since 2005 Empa calculates 10-day back-trajectories for a number of sites of the Global Atmosphere Watch (GAW) programme of the World Meteorological Organisation (WMO). These back-trajectories can given a first impression of the origin of air masses arriving at the sites and, hence, can be used to identify up-stream sources and events. Trajectories are calculated daily with a delay of about 2 days. For further questions and data requests, please contact Stephan Henne.

Please choose a location and product to get to the calendar overview.

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Webmaster: Stephan Henne last revision: 29 Apr 2011
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