CAJ | 학술논문

利用1948-2010年NCEP/NCAR逐月位势高度再分析资料、美国国家海洋局提供的1948-2010年逐月海温再分析资料，分别定义了1000-500 hPa和500-200 hPa厚度，利用EOF、SVD等方法研究了北半球对流层厚度时空演变特征及其与大气环流和海面温度的关系。结果表明，冬季平均厚度EOF第一模态均具有北太平洋及附近高纬度亚洲大陆地区与北美大陆高纬地区反位相变化的特点，而夏季第一模态则是北半球范围内较一致的位相分布；冬、夏季平均厚度EOF第二模态均突出体现了欧亚大陆及附近地区与北半球其他地区反位相变化的特点；冬、夏季厚度场的变化形势与大气环流及海面温度具有密切联系。
이용1948-2010년NCEP/NCAR축월위세고도재분석자료、미국국가해양국제공적1948-2010년축월해온재분석자료，분별정의료1000-500 hPa화500-200 hPa후도，이용EOF、SVD등방법연구료북반구대류층후도시공연변특정급기여대기배류화해면온도적관계。결과표명，동계평균후도EOF제일모태균구유북태평양급부근고위도아주대륙지구여북미대륙고위지구반위상변화적특점，이하계제일모태칙시북반구범위내교일치적위상분포；동、하계평균후도EOF제이모태균돌출체현료구아대륙급부근지구여북반구기타지구반위상변화적특점；동、하계후도장적변화형세여대기배류급해면온도구유밀절련계。
Based on the 1948-2010 NCEP/NCAR reanalysis monthly geopotential height data and NOAA monthly SST(sea surface temperature) data, the 1 000-500 hPa and 500-200 hPa thicknesses are respectively defined as the lower and upper troposphere thicknesses. Temporal and spatial variations of the lower and upper troposphere thicknesses in Northern Hemisphere and their relationships with atmospheric circulation and sea surface temperature are analyzed by using the EOF (empirical orthogonal function) and SVD (singular value decomposition) analysis methods. Results show that for the first EOF modes of the lower and upper troposphere thicknesses, the thickness anomalies over North Pacific and its neighboring Asian high-latitude area are anti-phased to those over the high-latitude area of North American continent in winter , and the thickness anomalies are concurrent in Northern Hemisphere in summer. For the second EOF modes in winter and summer, the thickness anomalies in Eurasia are anti-phased to those in the other areas of Northern Hemisphere. The temporal and spatial variations of troposphere thickness in Northern Hemisphere have close relations with the atmospheric circulation and SST.