CAJ | 학술논문

利用2002～2010年25°N～35°N，110°E～120°E范围内的NCEP 1°×1°500 hPa高度场、涡度场和风场6 h再分析资料，运用层次分析法，构建出高空槽强度指数TSI。结果表明，TSI的大小与槽强度有很好的一致性，即TSI越大槽越强。TSI不仅对槽有较好的指示意义，对脊也有一定的指示意义。其中当TSI＞0．6时，高空槽在该区域较明显；0．35≤TSI≤0．6时，槽脊都不明显，即主要表现为一致的西风环流；TSI＜0．35时，高空脊较为明显。利用2011年的数据对该指数进行检验，检验效果较好。另外，定量分析较强高空槽（TSI≥0．6）的月分布规律发现，较强槽冬季较多而夏季较少。
이용2002～2010년25°N～35°N，110°E～120°E범위내적NCEP 1°×1°500 hPa고도장、와도장화풍장6 h재분석자료，운용층차분석법，구건출고공조강도지수TSI。결과표명，TSI적대소여조강도유흔호적일치성，즉TSI월대조월강。TSI불부대조유교호적지시의의，대척야유일정적지시의의。기중당TSI＞0．6시，고공조재해구역교명현；0．35≤TSI≤0．6시，조척도불명현，즉주요표현위일치적서풍배류；TSI＜0．35시，고공척교위명현。이용2011년적수거대해지수진행검험，검험효과교호。령외，정량분석교강고공조（TSI≥0．6）적월분포규률발현，교강조동계교다이하계교소。
Based on the 500 hPa vorticity,height and wind fields of NCEP reanalysis data with 6 hours temporal and 1° × 1° spatial res-olution over the region of 25°N-35°N,110°E-120°E from 2002 to 2010,the strength index of upper-level trough (TSI)was con-structed by using analytic hierarchy process (AHP ). The results show that there was a good consistency between TSI and trough strength,and the greater TSI,the stronger upper-level trough was. TSI had indicative significance not only for upper trough,but also for upper ridge. The upper-level trough was obvious when the value of TSI was greater than 0. 6,but the trough and ridge were not apparent when the value of TSI was between 0. 35 and 0. 6 and the consistent westerly circulation was presented,and when the value of TSI was less than 0. 35,the upper-level ridge was significant. In order to test TSI,the data in 2011 was imported into the formula of TSI,and the result was good. In addition,the strong upper-level trough with TSI greater than 0. 6 had an obvious monthly change, and the amount of strong trough was more in winter and less in summer.