气象科学2017，Vol.37Issue(5)：659-665,7.DOI:10.3969/2016jms.0055
基于湿位涡和积雪效率的降雪预报技术探讨
Investigation on snowfall forecasting skills based on moist potential vorticity and efficiency of snow accumulation
摘要
Abstract
The Moist Potential Vorticity (MPV) of a severe snowstorm process during 2015 in Nanjing was diagnostically analyzed the firstly,and then,57 heavy snow cases during 2008 to 2015 were studied to conclude the relationship between snow accumulation efficiency and 2-meter temperature.Results showed that the barotropic item oMPV has good agreement with snowfall intensity.The snowfall area was well forecasted by combining the baroclinic item of MPV and the surface temperature,and the heavy snowfall area was well corresponding with the large value center of the baroclinic item of MPV.The snow accumulation efficiency was closely determined by surface 2-meter temperature.Their relationship,temperature and snowfall amount could be used to forecast the snowfall depth.关键词
湿位涡/降雪落区/积雪深度/积雪效率Key words
Moist potential vorticity/Snowfall area/Snowcover depth/Efficiency of snow accumulation分类
天文与地球科学引用本文复制引用
姜有山,束宇,李力,刘冬晴..基于湿位涡和积雪效率的降雪预报技术探讨[J].气象科学,2017,37(5):659-665,7.基金项目
国家自然科学基金资助项目(41305051) （41305051）
江苏省气象局科研基金项目(KM201505) （KM201505）
江苏省气象局预报员专项项目(JSYBY201409) （JSYBY201409）
