CAJ | 학술논문

利用203个测站1961～2005年4～10月逐候降水量资料,分析了东北地区雨季降水集中度和集中期时空分布特征及其变化规律.结果表明,东北雨季东部降水较西部更为集中,与年暴雨日数有很好的相关关系,降雨集中期在7月中旬到8月上旬;东北4个区雨季降水在20世纪60年代有不集中的趋势,而后呈集中趋势,到20世纪90年代后期以来变化趋势不明显,这种变化趋势可能与大气系统的强弱变化有关.东北地区的中部区、南部区、西北区雨季降水集中期均经历了趋晚、趋早、趋晚、趋势不明显4个阶段,东部区经历了平稳阶段、趋早、趋晚、趋早4个阶段,各个区转折时间不尽相同.
이용203개측참1961～2005년4～10월축후강수량자료,분석료동북지구우계강수집중도화집중기시공분포특정급기변화규률.결과표명,동북우계동부강수교서부경위집중,여년폭우일수유흔호적상관관계,강우집중기재7월중순도8월상순;동북4개구우계강수재20세기60년대유불집중적추세,이후정집중추세,도20세기90년대후기이래변화추세불명현,저충변화추세가능여대기계통적강약변화유관.동북지구적중부구、남부구、서북구우계강수집중기균경력료추만、추조、추만、추세불명현4개계단,동부구경력료평은계단、추조、추만、추조4개계단,각개구전절시간불진상동.
Based on the precipitation data from 203 survey stations from April to October during 1961-2005, the precipitation concentration degree and the centralism time space and time distribution characteristic and the change rule in rainy season in Northeast China were analyzed. The results showed that the eastern part of the rainy season precipitation in the Northeast was more concentrated than the western region, with the number of days of rain in a very good correlation between the concentration of rainfall in mid-July and early August. Four areas during the rainy season precipitation in the Northeast in the 1960s the trend had not focused on, and then was focused on the trend since the late 1990s the trend was not obvious that this trend might be related to atmospheric changes in the strength of the system. The concentrated period of rainfall in the central district, southern district, northwest district of Northeast China during the rainy season all experienced four phases of late, early, late, unobvious trend. The eastern district experienced four stages of smooth phase, early, late, early. The turning time in each district was different.