CAJ | 학술논문

根据1961-2012年重庆地区34个气象观测站的逐日降水资料、NCEP/NCAR再分析数据集中的高度场格点资料和NOAA的海温逐月资料，分析了重庆地区秋季连阴雨的气候特征、气候背景与前兆信号．结果表明：近52年来重庆地区秋季连阴雨频数呈线性增多趋势．重庆地区秋季连阴雨偏多（偏少）同期环流对应乌拉尔山地区高度场偏低（高），欧亚中高纬度地区盛行经向（纬向）环流，赤道东太平洋区域海温偏低（偏高）．前期春季、夏季孟加拉湾地区、我国南海地区500 hPa高度场、赤道中东太平洋地区海温，特别是Ni?o3.4区的海温异常变化是重庆地区秋季连阴雨出现异常偏多（少）值得关注的前兆信号．
근거1961-2012년중경지구34개기상관측참적축일강수자료、NCEP/NCAR재분석수거집중적고도장격점자료화NOAA적해온축월자료，분석료중경지구추계련음우적기후특정、기후배경여전조신호．결과표명：근52년래중경지구추계련음우빈수정선성증다추세．중경지구추계련음우편다（편소）동기배류대응오랍이산지구고도장편저（고），구아중고위도지구성행경향（위향）배류，적도동태평양구역해온편저（편고）．전기춘계、하계맹가랍만지구、아국남해지구500 hPa고도장、적도중동태평양지구해온，특별시Ni?o3.4구적해온이상변화시중경지구추계련음우출현이상편다（소）치득관주적전조신호．
In this paper ,the climate characteristics ,background and previous signals of continuous autumn rain in Chongqing have been studied based on height field from NCEP/NCAR ,monthly SST from NOAA and daily precipitation observed by 34 meteorological stations in Chongqing from 1961 to 2012 .T he results are as follow s :T he frequency of continuous autumn rain in Chongqing in recent 52 years has been in-creased .The more(less) continuous autumn rain corresponds to lower (higher) 500hPa height field over U-ral mountain area ,prevailing meridional (zonal) circulation in Eurasia high-mid latitudes and lower (high-er) SST in the equatorial east Pacific .The 500hPa height field in the bay of Bengal and South China Sea and SST in the equatorial central eastern Pacific especially in Ni?o 3 .4 in previous spring and summer are important previous signals of abnormal continuous autumn rain in Chongqing .