CAJ | 학술논문

利用中国西北地区82站地面气温资料和NCEP再分析月平均地气系统射出长波辐射（OLR）资料,采用EOF、合成分析、相关分析方法,分析了干旱区气温与青藏高原OLR的关系,结果表明：（1）青藏高原OLR第一模态的高值区相对集中在藏北高原,冬季偏西,春季向东移动,夏季最东在唐古拉山西段。OLR异常影响干旱区的气温。其中,1月OLR与同期气温正相关,有相同的年代际和年际变化趋势,滞后6个月（上年7月）负相关;7月OLR与同期的气温年代际趋势是相反的,年际变化呈不显著的反相关,滞后7个月（上年12月）正相关、滞后11个月（上年8月）负相关,都有显著相关区。即当青藏高原夏季7月OLR异常偏大（小）时,对应干旱区次年冬季1月气温异常偏低（高）。青藏高原8月和12月OLR异常偏大（小）时,对应干旱区次年夏季7月气温异常偏高（低）;（2）青藏高原OLR低值中心与干旱区气温的关系：1月气温与同期高原OLR正相关、与前两年8月负相关;7月气温与前一年2月高原OLR正相关、与前一年8月负相关。
이용중국서북지구82참지면기온자료화NCEP재분석월평균지기계통사출장파복사（OLR）자료,채용EOF、합성분석、상관분석방법,분석료간한구기온여청장고원OLR적관계,결과표명：（1）청장고원OLR제일모태적고치구상대집중재장북고원,동계편서,춘계향동이동,하계최동재당고랍산서단。OLR이상영향간한구적기온。기중,1월OLR여동기기온정상관,유상동적년대제화년제변화추세,체후6개월（상년7월）부상관;7월OLR여동기적기온년대제추세시상반적,년제변화정불현저적반상관,체후7개월（상년12월）정상관、체후11개월（상년8월）부상관,도유현저상관구。즉당청장고원하계7월OLR이상편대（소）시,대응간한구차년동계1월기온이상편저（고）。청장고원8월화12월OLR이상편대（소）시,대응간한구차년하계7월기온이상편고（저）;（2）청장고원OLR저치중심여간한구기온적관계：1월기온여동기고원OLR정상관、여전량년8월부상관;7월기온여전일년2월고원OLR정상관、여전일년8월부상관。
Based on temperature data of 82 stations in Northwest China and NCEP reanalysis data of the monthly mean grid OLR,the relationship between air temperature in Arid region of Northwest China and OLR over the Qinghai-Tibet plateau was analyzed by using EOF,synthesis and correlation analysis methods.The main conclusions are as follows：（1）The high value center of the first mode of OLR concentrated in the northern Tibet Plateau,which faced west in winter and moved to the east in spring,in summer located in west section of the Tanghla mountain.The temperature in January correlated positively with OLR at the same time,and they had the same decadal and interannual change tendency,but presented opposite correlation with the OLR lagged for six months（July of last year）.The temperature in July and the same time OLR presented opposite decadal tendency,but the opposite interannual trend was not remarkable,and correlated positively with the OLR lagged for seven months（December of last year） and negatively with OLR lagged for 11 months（August of last year）.Namely,when the OLR over Qinghai-Tibet plain in July was abnormally large（small）,the temperature in January of next year in arid region was abnormally low（high）.When OLR over Qinghai-Tibet Plain in August and December was abnormally large（small）,the temperature in July of next year would be abnormally high（low）;（2）The low value center of OLR over Qinghai-Tibet plateau also has some relations with temperature in arid region of Northwest China,namely,the temperature in January correlated positively with OLR at the same time and negatively with OLR lagged for 17 months,the temperature in July correlated positively with OLR lagged for 17 months and negatively with OLR lagged for 12 months.