CAJ | 학술논문

利用中国105个站的探空资料及NCEP／NCAR、ERA和JRA三种再分析资料，采用均方根误差和趋势分析等多种统计分析方法，对再分析资料的高空温度在中国东北和西北地区的可信度进行了分析。研究表明：在气候平均方面，JRA资料比探空资料的均方根误差小，冬季的均方根误差较小，西北地区的均方根误差普遍大于东北地区；在年际变化方面，东北地区三种再分析资料在低层的反映程度明显好于高层，西北地区各层三种再分析资料与探空资料的差值普遍比东北地区大；在长期变化方面，三种再分析资料在对流层低层均较好，东北地区NCEP资料能更好地反映探空资料高层的降温趋势，而在西北地区，则是JRA资料能更好地反映探空资料高层的降温趋势。
이용중국105개참적탐공자료급NCEP／NCAR、ERA화JRA삼충재분석자료，채용균방근오차화추세분석등다충통계분석방법，대재분석자료적고공온도재중국동북화서북지구적가신도진행료분석。연구표명：재기후평균방면，JRA자료비탐공자료적균방근오차소，동계적균방근오차교소，서북지구적균방근오차보편대우동북지구；재년제변화방면，동북지구삼충재분석자료재저층적반영정도명현호우고층，서북지구각층삼충재분석자료여탐공자료적차치보편비동북지구대；재장기변화방면，삼충재분석자료재대류층저층균교호，동북지구NCEP자료능경호지반영탐공자료고층적강온추세，이재서북지구，칙시JRA자료능경호지반영탐공자료고층적강온추세。
Based on temperature data from radiosonde dataset at 105 stations in China and three reanalysis datasets of NCEP/NCAR,ERA and JRA,the reliability of free atmospheric temperature in the northeast and northwest of China was analyzed by methods of a root mean square error analysis and a trend analysis and so on.The results in-dicate that in terms of climatological mean,the root mean square error of JRA datasets is lower than that of radio-sonde dataset,and it is lower in winter and higher in the northwest of China than in the northeast of China.In terms of annual variance,atmospheric temperature of three reanalysis datasets are close to that of radiosonde dataset in low layer than in upper layer in the northeast of China,while temperature differences between three reanalysis data-sets and radiosonde dataset are higher in the northwest of China than in the northeast of China.In the aspect of long-term variance,three reanalysis datasets have comparable ability in reproducing the trend in lower troposphere. Cooling trend in upper layer can be better identified by the NCEP reanalysis dataset in the northeast of China, while it is by the JRA reanalysis dataset in the northwest of China.