摘要
利用1951-2003年间逐月的500 hPa高度场、环流特征量和全国141个测站逐月的3.2 m深层地温资料,分析了夏季西太平洋副热带高压（下称西太副高）位置的变化与中国深层地温变化的关系。结果表明,西太副高的脊线位置与中国大陆一些区域的深层地温的关系明显,高相关区域在100°~115°E,30°~45°N之间。6月份,沿30°~35°N有一准东西向的高相关轴线,7月高相关带北移至34°~40°N,8月高相关带北移到40°~45°N。中国深层地温与西太副高北界也有明显的相关区、高相关轴线,与西太副高脊线的情形相似,但高相关区比西太副高脊线偏东,北界位置主要在105°~120°E,30°~35°N。在西太副高偏南和偏北的年份,所选区域的深层地温有明显的不同。西太副高脊线偏北年份深层地温偏高;偏南年份地温偏低,并且从前期1月就已开始。在各月地温的变化中,两组年份基本是相反的。
Based on the data of monthly 500 hPa height and ground temperature at 3.2 m depths during 1951 to 2003,the relationship between the location of west Pacific subtropical high（WPSH） and China ground temperature field are analyed.The results show that the relationships between the latitudes of ridge line of WPSH and ground temperatures of some regions in China are clear,and the high correlation regions are near the region of 100°~115°E,30°~45°N.In the relation field of June,there is a quasi transmeridional high relation axes along 30°~35°N,and it moves northward to 34°~40°N in July and to 40°~45°N in August.Like to this,there are similar high relation regions and axes on the relation field between north border of west Pacific subtropical high and ground temperature of China.In the years that the latitude of ridgeline of west Pacific subtropical high is on the north or south side,the ground temperatures in selected region are different.The ground temperatures are high when the ridge line of west Pacific subtropical high is on the north side,and lower when that on the south side.And so,the annual variations are also opposite in two groups.
出处
《高原气象》
CSCD
北大核心
2007年第5期1119-1122,共4页
Plateau Meteorology
基金
科技部科研院所社会公益研究专项"中国干旱气象灾害监测预警方法研究"(2004DIB5J192)资助
关键词
西太副高
地温场
相关分析
West Pacific subtropical high
Ground temperature field
Correlation analysis
