CAJ | 학술논문

利用NCEP／NCAR全球再分析风场资料定义了西风急流强度指数和位置指数，然后利用EOF方法分析了高空西风急流的空间分布特征，从强度和位置两方面分析了西风急流与东亚环流及其与海温的关系。表明：EOF第一模态反映了东亚高空急流的位置指数，第二模态反映了高空急流的强度指数。东亚高空急流与对流层大气环流包括南亚高压，西太平洋副热带高压，东亚夏季风存在着密切关系，其气候变化与热带副热带东太平洋、印度洋海温密切相关。
이용NCEP／NCAR전구재분석풍장자료정의료서풍급류강도지수화위치지수，연후이용EOF방법분석료고공서풍급류적공간분포특정，종강도화위치량방면분석료서풍급류여동아배류급기여해온적관계。표명：EOF제일모태반영료동아고공급류적위치지수，제이모태반영료고공급류적강도지수。동아고공급류여대류층대기배류포괄남아고압，서태평양부열대고압，동아하계풍존재착밀절관계，기기후변화여열대부열대동태평양、인도양해온밀절상관。
By Use of the NCEP / NCAR re-analysis data of the global wind field, the westerly jet intensity index and location index was definited, and then the spatial distribution of the highaltitude westerly jet characteristics was analyzed by the method of EOF. From the two aspects of intensity and location, the relationship between East Asian westerly jet and atmospheric circulation in east Asian and the relationship between East Asian westerly jet and sea surface temperature. Analysis showed the first EOF mode in East Asia reflected the location of high-altitude jet index, the second mode reflected the strength of high-altitude jet index. East Asian high-altitude jet was closely related to the tropospheric circulation including the South Asian high-pressure, the West Pacific subtropical high-pressure, the East Asian summer monsoon. There was a close relation between the climate change and the sea surface temperature of tropical and sub-tropical eastern Pacific Ocean, Indian Ocean.