气象与环境学报
氣象與環境學報
기상여배경학보
JOURNAL OF METEOROLOGY AND ENVIRONMENT
2015年
1期
6-13
,共8页
李慧琳%高松影%徐璐璐%宋丽丽%李瑞晗%王春霞
李慧琳%高鬆影%徐璐璐%宋麗麗%李瑞晗%王春霞
리혜림%고송영%서로로%송려려%리서함%왕춘하
北上台风%辽东半岛%冷空气
北上檯風%遼東半島%冷空氣
북상태풍%료동반도%랭공기
Northwardly typhoon%Liaodong Peninsula%Cold air
1109号台风“梅花”和1215号台风“布拉万”是自黄海海域北上影响辽东半岛的台风,两次台风降雨量和风力的预报均出现偏差。利用常规气象资料、加密气象自动观测站资料及NCEP再分析资料对两次台风过程进行对比分析。结果表明:500 hPa中高纬度110°—120°E附近低槽、鄂霍次克海阻塞高压、副热带高压强度和形状的改变及北方冷空气对台风北上路径和强度有重要影响。北方冷空气对北上台风引起的降雨十分关键,降雨主要由台风外围螺旋雨带造成。日本海高压伸向中国东北地区的高压脊对大风的形成有重要作用,台风登陆后影响时间的长短与登陆后冷空气的配合有密切关系。
1109號檯風“梅花”和1215號檯風“佈拉萬”是自黃海海域北上影響遼東半島的檯風,兩次檯風降雨量和風力的預報均齣現偏差。利用常規氣象資料、加密氣象自動觀測站資料及NCEP再分析資料對兩次檯風過程進行對比分析。結果錶明:500 hPa中高緯度110°—120°E附近低槽、鄂霍次剋海阻塞高壓、副熱帶高壓彊度和形狀的改變及北方冷空氣對檯風北上路徑和彊度有重要影響。北方冷空氣對北上檯風引起的降雨十分關鍵,降雨主要由檯風外圍螺鏇雨帶造成。日本海高壓伸嚮中國東北地區的高壓脊對大風的形成有重要作用,檯風登陸後影響時間的長短與登陸後冷空氣的配閤有密切關繫。
1109호태풍“매화”화1215호태풍“포랍만”시자황해해역북상영향료동반도적태풍,량차태풍강우량화풍력적예보균출현편차。이용상규기상자료、가밀기상자동관측참자료급NCEP재분석자료대량차태풍과정진행대비분석。결과표명:500 hPa중고위도110°—120°E부근저조、악곽차극해조새고압、부열대고압강도화형상적개변급북방랭공기대태풍북상로경화강도유중요영향。북방랭공기대북상태풍인기적강우십분관건,강우주요유태풍외위라선우대조성。일본해고압신향중국동북지구적고압척대대풍적형성유중요작용,태풍등륙후영향시간적장단여등륙후랭공기적배합유밀절관계。
Two typhoons called Muifa(1109)and Bolaven(1215)formed over the Yellow Sea area both moved northward and affected Liaodong Peninsula.There were errors in the forecast of precipitation and wind intensity for these two typhoon processes.Based on the conventional meteorological data,observational data from intensive au-tomatic weather stations and the NCEP reanalysis data,the above two typhoons were compared and analyzed.The results show that low trough at mid-high latitude(from 1 10°E to 120°E)of 500 hPa,the Okhotsk blocking high,the change of Subtropical High intensity and shape,and the northern cold air all significantly affect the northward track and intensity of the typhoons.The northern cold air was important to precipitation caused by northward typhoon, and spiral rain band around the typhoon leads to precipitation.The Japan Sea High ridge stretching to northeastern China influences significantly gale.The duration of typhoon impact is closely relative to involvement of cold air af-ter landfall.