CAJ | 학술논문

用WRF模式模拟了2005年12月6-7日山东半岛一次冷流暴雪过程，通过降低太行山地形高度至10 m和抬升山东半岛地形高度至500 m的敏感性数值试验，分析了上游太行山和山东半岛地形对山东半岛冷流降雪的影响。结果表明：太行山对山东半岛冷流降雪的强度起到了加强的作用，降低太行山地形高度的敏感性试验在山东半岛北部10 m风场辐合强度，较同时次控制性试验明显减弱，减弱的区域主要在山东半岛北部地区，其他区域变化不明显；同时敏感试验的流场在山东半岛的辐合也有所减弱，流线密度要疏散些。850 hPa西北风越过太行山后在背风面产生波动，波动中的气旋性小涡旋移至山东半岛后，加强了山东半岛本地的辐合强度。抬升山东半岛的地形高度后，地形的抬升辐合作用增强，故冷流降雪的强度也得到增强。
용WRF모식모의료2005년12월6-7일산동반도일차랭류폭설과정，통과강저태행산지형고도지10 m화태승산동반도지형고도지500 m적민감성수치시험，분석료상유태행산화산동반도지형대산동반도랭류강설적영향。결과표명：태행산대산동반도랭류강설적강도기도료가강적작용，강저태행산지형고도적민감성시험재산동반도북부10 m풍장복합강도，교동시차공제성시험명현감약，감약적구역주요재산동반도북부지구，기타구역변화불명현；동시민감시험적류장재산동반도적복합야유소감약，류선밀도요소산사。850 hPa서북풍월과태행산후재배풍면산생파동，파동중적기선성소와선이지산동반도후，가강료산동반도본지적복합강도。태승산동반도적지형고도후，지형적태승복합작용증강，고랭류강설적강도야득도증강。
A cold airflow snowstorm process on December 6-7 ,2005 in the Shandong peninsula was simulated u-sing a WRF model.By reducing the height of the Taihang mountains down to 10 m and uplifting the height of the Shandong peninsula to 500 m,a sensitivity experiment was performed to analyze the effects of topography of the Taihang mountains and Shandong peninsula on cold airflow snowstorm.The results indicate that the intensity of cold airflow snowstorm in the Shandong peninsula increases because of the existence of the Taihang mountains. The convergence intensity of 10 m wind field in the sensitivity experiment by reducing the height of the Taihang mountains is weakened obviously compared with that in the control experiment,especially in the north of the Shan-dong peninsula.At the same time,the convergence of flow field in the Shandong peninsula is weakened simultane-ously as the stream become diverging.A wave is generated as the northwest wind at 850 hPa crosses over the Taihang mountains,and the vortex in the wave strengthens the local convergence by moving downstream to the Shandong peninsula.As the raising of height of the Shandong peninsula enhances the effects of uplifting and con-vergence,the cold airflow snowstorm is strengthened consequently.