Analysis of revolving inshore For 0505 Typhoon Haitang

In the view of unusual motion of typhoon Haitang that anticlockwise revolve suddenly when it close to landing at the alongshore in northeast of Taiwan,we used weather map and radar data,analyzed the ambient field and character of typhoon eddy structure,explored the effect of topography of Taiwan Hualian and asymmetric structure of typhoon on the typhoon track.The results show that:under the background of col field,orographic forcing of Taiwan topography and eddy thermodynamic asymmetric of typhoon,resulting in typhoon revolve inshore.