- Example of ANASYG

• The superimposition of the upper level forcing on the surface elements emphasizes particular context :

  • example : excerpt from 97 dec 23rd 00 Z ANASYG ;
    ANASYG, with
    superimposition of :- IR image, - 850 hPa q’w (green,°C)- mslp (light blue)
    

upper

level jet >

tropopause anomaly >

• pseudo-occlusion context => very likely cyclogenesis
• keys for : what areas require carefull investigations

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