气象研究与应用
氣象研究與應用
기상연구여응용
JOURNAL OF METEOROLOGICAL RESEARCH AND APPLICATION
2011年
4期
6-12,I0001
,共8页
刘金裕%林确略%陆丽安%孙素琴
劉金裕%林確略%陸麗安%孫素琴
류금유%림학략%륙려안%손소금
玉林%夏季高温%气候特征%平均风速%相对湿度%副高%环流形势
玉林%夏季高溫%氣候特徵%平均風速%相對濕度%副高%環流形勢
옥림%하계고온%기후특정%평균풍속%상대습도%부고%배류형세
Yulin%summer high temperature%climatic characteristics%average wind speed%relative humidity%subtropical high%weather patterns
利用近50年(1961~2010年)广西玉林站的气温、风、相对湿度、日照等地面观测资料及历史天气图、NCEP/NCAR再分析资料,统计分析了玉林夏季高温天气的气候特征并探讨出现高温天气的大气环流形势。结果表明:(1)玉林高温天气主要出现在6-9月,3d以上的持续高温主要出现在7~8月,且高温日数的年际差异很大。玉林高温天气过程期间的日平均风速小、日平均相对湿度大、平均气温高和月平均日照时数偏多。(2)玉林出现高温天气的大气环流形势主要有副热带高压(以下简称副高)控制型、热带气旋外围型和副高与热带气旋共同影响型三类;高温持续时间与副高强度密切相关,当副高强,范围大,位置偏西,控制整个华南地区时,玉林容易出现持续高温;热带气旋外围下沉气流影响易出现极端最高气温;副高和热带气旋联合影响能使高温持续时间加长,强度加剧。
利用近50年(1961~2010年)廣西玉林站的氣溫、風、相對濕度、日照等地麵觀測資料及歷史天氣圖、NCEP/NCAR再分析資料,統計分析瞭玉林夏季高溫天氣的氣候特徵併探討齣現高溫天氣的大氣環流形勢。結果錶明:(1)玉林高溫天氣主要齣現在6-9月,3d以上的持續高溫主要齣現在7~8月,且高溫日數的年際差異很大。玉林高溫天氣過程期間的日平均風速小、日平均相對濕度大、平均氣溫高和月平均日照時數偏多。(2)玉林齣現高溫天氣的大氣環流形勢主要有副熱帶高壓(以下簡稱副高)控製型、熱帶氣鏇外圍型和副高與熱帶氣鏇共同影響型三類;高溫持續時間與副高彊度密切相關,噹副高彊,範圍大,位置偏西,控製整箇華南地區時,玉林容易齣現持續高溫;熱帶氣鏇外圍下沉氣流影響易齣現極耑最高氣溫;副高和熱帶氣鏇聯閤影響能使高溫持續時間加長,彊度加劇。
이용근50년(1961~2010년)엄서옥림참적기온、풍、상대습도、일조등지면관측자료급역사천기도、NCEP/NCAR재분석자료,통계분석료옥림하계고온천기적기후특정병탐토출현고온천기적대기배류형세。결과표명:(1)옥림고온천기주요출현재6-9월,3d이상적지속고온주요출현재7~8월,차고온일수적년제차이흔대。옥림고온천기과정기간적일평균풍속소、일평균상대습도대、평균기온고화월평균일조시수편다。(2)옥림출현고온천기적대기배류형세주요유부열대고압(이하간칭부고)공제형、열대기선외위형화부고여열대기선공동영향형삼류;고온지속시간여부고강도밀절상관,당부고강,범위대,위치편서,공제정개화남지구시,옥림용역출현지속고온;열대기선외위하침기류영향역출현겁단최고기온;부고화열대기선연합영향능사고온지속시간가장,강도가극。
Based on the observation data of surface temperature, wind, relative humidity and solar radiation of Yulin station in recent 50 years (1961-2010) , the historical weather maps and NCEP/ NCAR reanalysis data, the climatic characteristics of high temperature summer weather were statistically analyzed and its general circulation features are discussed. The results showes that 1) the hot days usually occurred in June to September and the cases, which last at least 3 hot days, mainly happened in July to August. The days of hot varied greatly between years. There are small daily mean wind speed, high daily mean relative humidity and temperature, as well as greater monthly mean sunlight hours during hot weather process. 2) There are three types of large-scale circulation, which would cause the hot weather: the subtropical high controlling type, tropical cyclone periphery type and the subtropical high coinciding with tropical cyclone type. The lasting time of high temperature weather was closely related to the intensity of subtropical high. While the subtropical high was strong, expanded more wests and covered the South China, there were usually appearing the hot weather; when the downward flow of tropical cyclone affected Yulin, the extreme heat days often happened; when the subtropical high affected Yulin associated with the tropical cyclone, the heat days persist and the temperature would be higher.