CAJ | 학술논문

对1961—2010年淖毛湖气象站沙尘暴资料的分析表明，沙尘暴主要出现在3—5月，4月份最多；沙尘暴天气主要集中在白天，占总次数的83%，夜间相对较少，只占17%。50年内淖毛湖出现沙尘暴天气过程804次，以西方和西北方冷空气入侵为主，集中发生在3—5月；50年来淖毛湖沙尘暴日数呈减少趋势，按线性拟合其减少率为0.711 d/10 a。20世纪60年代中期到70年代沙尘暴日数呈现急剧增加趋势，1974年沙尘暴日数多达54 d，20世纪80年代后沙尘暴日数呈现急剧下降趋势，年日数减少到1 d，甚至个别年份未出现沙尘暴天气，该时期大风日数减少、风力强度减弱是主要原因外，生态环境改善，局地植被增加也是重要因素。
대1961—2010년뇨모호기상참사진폭자료적분석표명，사진폭주요출현재3—5월，4월빈최다；사진폭천기주요집중재백천，점총차수적83%，야간상대교소，지점17%。50년내뇨모호출현사진폭천기과정804차，이서방화서북방랭공기입침위주，집중발생재3—5월；50년래뇨모호사진폭일수정감소추세，안선성의합기감소솔위0.711 d/10 a。20세기60년대중기도70년대사진폭일수정현급극증가추세，1974년사진폭일수다체54 d，20세기80년대후사진폭일수정현급극하강추세，년일수감소도1 d，심지개별년빈미출현사진폭천기，해시기대풍일수감소、풍력강도감약시주요원인외，생태배경개선，국지식피증가야시중요인소。
Through analyzing sand-storm data of Naomao Lake Weather Sta-tion from 1961 to 2010, sandstorm main-ly occurred from March to May, especial-ly in April;sandstorm mainly occurred in the daytime (accounting for 83% of the total), and less at night (only 17% of the total). Within the half century, 804 sand-storms occurred in the region of the Naomao Lake, especially cold air invad-ed from west and northwest from March to May;the sandstorm days in this region reduce, and the reduction rate of the lin-ear fitting was 0.711 d/10 a. From the middle 1960s to the 1970s, sandstorm days increased drastically, achieved 54 days in 1974; sandstorm days reduced sharply since the 1980s, by 1 day annu-ally, even no sandstorm occurred in some years, because heavy wind days and wind strength reduced, ecological environment improved, and regional veg-etation increased.