气象科学2017，Vol.37Issue(5)：587-597,11.DOI:10.3969/2017jms.0014
西伯利亚风暴轴的气候特征及其可能维持机制
The climatic characteristics of Siberian storm track and its possible maintenance mechanism
摘要
Abstract
Based on the daily NCEP/NCAR reanalysis data during 1959-2014,the climatic mean characteristic of Siberian storm track was firstly investigated.And then,the energy diagnostic equation was used to discuss its possible maintenance mechanism in winter and compared with Siberian storm track with the North Pacific Storm Track (NPST) and Northern Atlantic Storm Track (NAST).Results show that:(1) Siberian storm track exists independently in four seasons.Although its intensity is the weakest and its position is to the north compared with the NPST and NAST,it still can be defined as a weak storm track.(2) The seasonal variation of Siberian storm track intensity is similar to that of the NPST.Unlike the northeastern location of the jet of two oceanic storm tracks,the Siberian storm track is located on the west side of the East Asian Polar-front Jet.(3) The further energy analysis results show that the baroclinic energy conversion (Ke4) is the main energy source of the Siberian storm track.The advective transport term of time-averaged airflow to eddy kinetic energy (Ke1) and eddy ageostrophic geopotential flux (Ke3) also play an important roles in the maintenance of the storm track in its eastern part.关键词
风暴轴/能量诊断/维持机制Key words
Storm track/Energy budget analysis/Maintenance mechanism分类
天文与地球科学引用本文复制引用
马阳,朱伟军,李天宇,王森,李欣..西伯利亚风暴轴的气候特征及其可能维持机制[J].气象科学,2017,37(5):587-597,11.基金项目
国家自然科学基金资助项目(41575070 （）
41075070) （）
公益性行业(气象)科研专项(GYHY201306028) （气象）
江苏高校优势学科建设工程(PAPD) （PAPD）
