CAJ | 학술논문

采用常规观测资料和NCEP1°×1°资料，对山东半岛2005年、2008年、2010年的几次典型冷流暴雪过程进行了分析。分析结果表明：冷流暴雪的高空形势主要分为高空冷涡型和高空横槽型。高空冷涡型较高空横槽型降雪量偏大，暴雪站点多。高空冷涡型500hPa层以上的位涡值较高空横槽型偏大，高层位涡有利于低层正涡度的加强，促使低层产生低压环流及辐合上升运动，上升运动加强了海面水汽的垂直输送，故高空冷涡型上升速度较高空横槽型强，湿层较厚，高空冷涡型较高空横槽型更容易产生暴雪过程。
채용상규관측자료화NCEP1°×1°자료，대산동반도2005년、2008년、2010년적궤차전형랭류폭설과정진행료분석。분석결과표명：랭류폭설적고공형세주요분위고공랭와형화고공횡조형。고공랭와형교고공횡조형강설량편대，폭설참점다。고공랭와형500hPa층이상적위와치교고공횡조형편대，고층위와유리우저층정와도적가강，촉사저층산생저압배류급복합상승운동，상승운동가강료해면수기적수직수송，고고공랭와형상승속도교고공횡조형강，습층교후，고공랭와형교고공횡조형경용역산생폭설과정。
Several typical cold-air blizzard processes on the Shandong Peninsula in 2005, 2008, 2010 have been analyzed by conventional observational data and NCEP 1°× 1° data. The results show that： the high-altitude situation .of cold-air blizzard is divided into cold eddy and cross-slot. The snowfall and blizzard points of high-altitude cold eddy are more than those of cross-slot. PV of cold eddy above 500 hPa layer is greater than that of cross-slot. Top vorticity is conducive to strengthen positive vorticity on low-level, and produces low voltage circulation on low level, which can produce the convergence rising motion strengthening the sea water vapor vertical transfer. Therefore, rising velocity of cold eddy is stronger than that of cross-slot, humidity layer is thicker, and cold eddy is easier to produce the blizzard , process.