CAJ | 학술논문

利用广东省乐昌高山气象站1972-1978年观冰资料和气候资料,分析了粤北地区导线覆冰的气象特征,建立了导线覆冰标准冰厚的气象推算模型.根据乐昌国家气象站的历史资料,对乐昌高山气象站的气候资料进行订正延长,构建了乐昌高山气象站覆冰年极值长年代序列,并推算出离地不同高度各重现期的标准冰厚值.结果表明,粤北地区导线覆冰主要发生在1月,其次为2月和12月,平均覆冰期在90天左右,最长覆冰期可达131天以上.主导风向、日最低气温、日降水量是影响导线覆冰厚度的主要气象因素.标准冰厚的年极值序列服从极值I型概率分布,历史上的最大导线覆冰值出现在2008年1月26日,2 m高度标准冰厚达64.4 mm,15 m高度标准冰厚达92.7 mm,与2008年冰灾调查的覆冰厚度(标准冰厚)115 mm较为接近.
이용광동성악창고산기상참1972-1978년관빙자료화기후자료,분석료월북지구도선복빙적기상특정,건립료도선복빙표준빙후적기상추산모형.근거악창국가기상참적역사자료,대악창고산기상참적기후자료진행정정연장,구건료악창고산기상참복빙년겁치장년대서렬,병추산출리지불동고도각중현기적표준빙후치.결과표명,월북지구도선복빙주요발생재1월,기차위2월화12월,평균복빙기재90천좌우,최장복빙기가체131천이상.주도풍향、일최저기온、일강수량시영향도선복빙후도적주요기상인소.표준빙후적년겁치서렬복종겁치I형개솔분포,역사상적최대도선복빙치출현재2008년1월26일,2 m고도표준빙후체64.4 mm,15 m고도표준빙후체92.7 mm,여2008년빙재조사적복빙후도(표준빙후)115 mm교위접근.
Using the wire icing observational data and climate data of a Lechang high-mountain weather station during 1972-1978, this paper analyses the meteorological characteristics of wire icing over the north region of Guangdong province and builds a calculation model for standard ice thickness in wire icing. Using historical observational data of the Lechang national weather station located nearby, this paper extends high-mountain climate data of the station and builds a long series of yearly maximum standard ice thickness. Then, standard ice thicknesses in different reproduced periods at different heights are calculated. The results show that wire icing over the north region of Guangdong province mostly occurs in January, followed in turn by February and December; the average icing period lasts about 90 days and the longest icing period reaches 131 days. Predominant wind direction, daily minimum air temperature and daily precipitation are the major meteorological factors to influence wire icing thickness. The series of yearly maximum standard ice thickness follows a pattern of extreme probability. The maximum wire icing thickness occurs in Jan. 26, 2008, with a standard ice thickness of 64.4 mm at 2 m and 92.7 mm at 15 m, which is close to that of 115 mm obtained from an investigation about wire icing damage in 2008.