一次地中海气旋发展的分析和诊断

ANALYSES AND DIAGNOSES OF THE DEVELOP-MENT OF A WINTER MEDITERRANEAN CYCLONE

本文对1981年1月7—10日一次强烈发展的地中海气旋发展过程进行了天气分析和诊断分析。结果表明,该地区冬季较稳定的槽后北风气流、Alps山和地中海在气旋生成和发展过程中具有相当的重要性。与Alps山正交的经向气流和Alps山的共同作用是地中海气旋初生的关键;而地中海冬季热源的作用则是地中海气旋发展的良好条件。

Analysis and diagnosis results of a intensely developed Mediterranean cyclone (MC) of 7-10 January 1981 were given in this paper. They showed that the stable winter meridianal flow following the circulation trough in this area, the Alps mountain and the Mediterranean Sea play important effects in the processes of cyclone generation and development. The key of cyclone generation is the cooperation of the Alps and the meridianal flow which perpendicular to the Alps. The Mediterranean acts as a heat source in winter and provides an advantage condition to the MC evolution.