CAJ | 학술논문

选取西北地区酒泉、榆中、庆阳3个背景不同的国家基准站站点作为研究对象,利用其1954?2010年的气象站常规资料,对湿润指数H在西北地区的适用性做了分析研究,结果表明：在西北地区年尺度分析中H值能够较好地表征干湿变化情况,但在季、月尺度分析中,H 值出现了较多极端值,通过与湿润指数M 值相比较并进行分析,认为这些极端值是不合理的；结合地区特点,通过分析将Thornthwaite计算方法中临界值调整为2.5?C, H值变化范围由原来的0～1081.524变为0～4.790,有效地滤去了极端值,相对于调整前,调整后的湿润指数H1能够更好地适用于西北地区的干湿变化分析.
선취서북지구주천、유중、경양3개배경불동적국가기준참참점작위연구대상,이용기1954?2010년적기상참상규자료,대습윤지수H재서북지구적괄용성주료분석연구,결과표명：재서북지구년척도분석중H치능구교호지표정간습변화정황,단재계、월척도분석중,H 치출현료교다겁단치,통과여습윤지수M 치상비교병진행분석,인위저사겁단치시불합리적；결합지구특점,통과분석장Thornthwaite계산방법중림계치조정위2.5?C, H치변화범위유원래적0～1081.524변위0～4.790,유효지려거료겁단치,상대우조정전,조정후적습윤지수H1능구경호지괄용우서북지구적간습변화분석.
Three different national benchmark stations of different background in Jiuquan, Yuzhong and Qingyang in Northwest China were selected as the research objects, and using the conventional data thereof from 1954 to 2010, the applicability of the humity index H was studied. The results show that in the seasonly and monthly analysis of Northwest drought-wet changes, the H value change was not reasonable because of the appearance of more extreme values, and in the yearly analysis, the H value change was more reasonable. In combination with regional characteristics, we adjusted the critical value of the Thornthwaite calculation method to 2.5?C, effectively filtered the extreme values, and found that the H ’s value changing trend with M was basically identical, the floating range turned to 0～4.790, relative to the previous 0～1 081.524. Thus the adjusted humity index H1 can be more suitable for a drought-wet change analysis of northwest areas of China.