CAJ | 학술논문

　　利用NCEP-DOE再分析数据分析了2008年1月26～28日中国南方罕见的低温雨雪冰冻天气的扰动能量的生成以及各种能量之间的转换。在急流中平均动能（Km）先转换成相互作用动能（Ki）然后再转化成扰动动能（Ke）。相互作用动能流是顺急流方向的。位势高度平流和有效位能与扰动动能的转化生成的扰动动能比平均动能转化的要小一个量级。中国中南部扰动有效位能（Ae）的产生主要由平均有效位能（Am）间接提供，其中相互作用有效位能（Ai）流起到了关键作用。生成的扰动有效位能在26日12：00（协调世界时）主要来源于两个地区：一个位于青藏高原，另一个位于中国东北部。随着两个主要源地的向东移动，转化也向东移动。相互作用有效位能流的方向同时存在逆急流方向和顺急流方向。
　　이용NCEP-DOE재분석수거분석료2008년1월26～28일중국남방한견적저온우설빙동천기적우동능량적생성이급각충능량지간적전환。재급류중평균동능（Km）선전환성상호작용동능（Ki）연후재전화성우동동능（Ke）。상호작용동능류시순급류방향적。위세고도평류화유효위능여우동동능적전화생성적우동동능비평균동능전화적요소일개량급。중국중남부우동유효위능（Ae）적산생주요유평균유효위능（Am）간접제공，기중상호작용유효위능（Ai）류기도료관건작용。생성적우동유효위능재26일12：00（협조세계시）주요래원우량개지구：일개위우청장고원，령일개위우중국동북부。수착량개주요원지적향동이동，전화야향동이동。상호작용유효위능류적방향동시존재역급류방향화순급류방향。
Local energy generation and conversion in freezing rain and snowstorms over southern China between 26 and 28 January 2008 were investigated using the NCEP-DOE Reanalysis 2 data. In the subtropical jet, the mean kinetic energy (Km) converts energy into interaction kinetic energy (Ki) flow, and then transient-eddy kinetic energy (Ke) is gained from the Ki flow. The Ki flow has the same orientation as the subtropical jet. The term for baroclinic conversion between Ke and Ae (ωeαe) and the geopotential height advection terms were about one order of magnitude lower than the terms for the conversions between Km and Ki (C(Km, Ki)) and between Ki and Ke (C(Ki, Ke)). The transient-eddy available potential energy (Ae) mainly obtained energy indirectly from the mean available potential energy (Am) over central–southern China because of the interaction available potential energy (Ai) flow. At 1200 UTC on 26 January 2008, there were two sources of Ai flow, one over the Tibetan Plateau and the other over northeastern China. The two sources shifted eastward over time so the energy conversions also shifted eastward. The Ai flows had two orientations, one being the orientation opposite that of the subtropical jet and the other in the same direction as the subtropical jet.