现代农业科技
現代農業科技
현대농업과기
XIANDAIHUA NONGYE
2014年
20期
241-244
,共4页
纪源%张放%白雪%鄢志宇%鲁建东
紀源%張放%白雪%鄢誌宇%魯建東
기원%장방%백설%언지우%로건동
暴雪%降水相态%0℃层%风廓线产品%辽宁锦州
暴雪%降水相態%0℃層%風廓線產品%遼寧錦州
폭설%강수상태%0℃층%풍곽선산품%료녕금주
heavy snowstorm%precipitation phase%0℃layer%wind profile products%Jinzhou Liaoning
利用常规观测资料、新一代多普勒雷达资料、自动站资料,对锦州地区一次雨转暴雪过程的发生、发展机制及降水相态转换的温度进行分析,结果表明:此次暴雪过程是500 hPa高空槽、850 hPa低涡及地面倒槽共同作用的结果。西南和东南急流在辽宁省上空形成较强的水汽辐合,强降雪落区位于急流汇合处,雨雪转换过程中,地面气温和近地层的温度与降水相态关系密切。
利用常規觀測資料、新一代多普勒雷達資料、自動站資料,對錦州地區一次雨轉暴雪過程的髮生、髮展機製及降水相態轉換的溫度進行分析,結果錶明:此次暴雪過程是500 hPa高空槽、850 hPa低渦及地麵倒槽共同作用的結果。西南和東南急流在遼寧省上空形成較彊的水汽輻閤,彊降雪落區位于急流彙閤處,雨雪轉換過程中,地麵氣溫和近地層的溫度與降水相態關繫密切。
이용상규관측자료、신일대다보륵뢰체자료、자동참자료,대금주지구일차우전폭설과정적발생、발전궤제급강수상태전환적온도진행분석,결과표명:차차폭설과정시500 hPa고공조、850 hPa저와급지면도조공동작용적결과。서남화동남급류재요녕성상공형성교강적수기복합,강강설락구위우급류회합처,우설전환과정중,지면기온화근지층적온도여강수상태관계밀절。
Based on the conventionally observational data,meteorological data from automatic weather stations and Doppler radar data,a rain to heavy snowstorm weather process in Jinzhou was analyzed.The results showed that the major influencing system of this heavy snowfall was the 500 hPa trough,vortex at the level of 850 hPa and the surface inverted trough.Southwest jet and Southeast jet form the strong water vapor convergence in our province over,heavy snowfall area was located at the confluence of the low-level jet in the conversion process between the rain and the snow,ground and surface layer temperature have a close relationship with precipitation phase.