Seasonal Backward Trajectory Map

Backward Trajectory of Air Mass reaching
Hong Kong in

Data not avilable

• Daily Backward Trajectory Map
• Monthly Backward Trajectory Map

• The above diagram shows all daily backward trajectories within the selected season.
• The product may be useful for tracing the origin of air mass reaching Hong Kong. Please click here for cases of the backward trajectory map under different weather patterns.
• Seasonal maps will be updated on the 1st of March, June, September and December.
• The trajectories were prepared using the HYSPLIT model of NOAA and output from numerical weather prediction models.

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