CAJ | 학술논문

利用1961—2013年大连地区逐日降雪天气现象和降雪量观测资料，按降雪量级，采用线性趋势分析和 Mann-Kendall趋势分析法对大连地区降雪的气候特征进行了分析。结果表明：1961—2013年大连地区降雪量呈下降的趋势，下降速率为1.6 mm／10 a，年际间降雪量呈波动显著增大的趋势，特别是近10 a 降雪量多次达到历史同期极值。近53 a 大连地区降雪初日呈推迟的趋势，而降雪终日呈显著提前的趋势。1961—2013年大连地区降雪日数明显减少，平均每10 a 减少2.0 d，降雪日数的显著减少主要表现为微量降雪日数和小雪日数的减少。冬季气温升高可能是大连地区降雪减少、降雪初日推迟和降雪终日提前的原因之一。
이용1961—2013년대련지구축일강설천기현상화강설량관측자료，안강설량급，채용선성추세분석화 Mann-Kendall추세분석법대대련지구강설적기후특정진행료분석。결과표명：1961—2013년대련지구강설량정하강적추세，하강속솔위1.6 mm／10 a，년제간강설량정파동현저증대적추세，특별시근10 a 강설량다차체도역사동기겁치。근53 a 대련지구강설초일정추지적추세，이강설종일정현저제전적추세。1961—2013년대련지구강설일수명현감소，평균매10 a 감소2.0 d，강설일수적현저감소주요표현위미량강설일수화소설일수적감소。동계기온승고가능시대련지구강설감소、강설초일추지화강설종일제전적원인지일。
Based on daily precipitation data and snow weather phenomena in Dalian from 1961 to 2013,climatic characteristics of snowfall were analyzed in terms of snowfall grades by methods of a linear trend analysis and a Mann-Kendall trend analysis.The results show that snowfall has a decreasing trend in recent 53 years in Dalian,by a rate of 1.6 mm per decade.Annual snowfall is in a significantly increasing trend,and annual snowfall amount reaches extreme value in historical record in several times in the recent 10 years.The date of first snowfall delays gradually,while that of last snowfall is in advance.Snowfall day is in a significant decreasing trend in Dalian,and its rate is 2.0 days per decade,which is mainly due to reduction of the number of trace snow day and light snow day.Warming in winter may result in decrease of winter snowfall and changes of the dates of the first and last snowfall.