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Monthly Backward Trajectory Map

Monthly Backward Trajectory Map

Backward Trajectory of Air Mass reaching

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Backward Trajectory Map Points to note:
  • The above diagram shows all daily backward trajectories within the selected month.
  • 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.
  • Monthly maps will be updated on the first day of each month.
  • The trajectories were prepared using the HYSPLIT model of NOAA and output from numerical weather prediction models.

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