CAJ | 학술논문

对1961—2008年银川市灰霾天气日数资料进行分析。结果表明：银川市灰霾天气呈逐渐增加的趋势2,0世纪80年代前为缓慢增加阶段,20世纪后灰霾天气显著增加2,000年后灰霾天气急剧增加。银川市灰霾日数最多为12月,其次为11月,最少为5月,呈现出冬季大于秋季大于春季大于夏季的季节特征。一般情况下,银川市灰霾日数持续1—3d,持续2d及以上的灰霾天气占17%,持续5d及以上的灰霾天气占1%。持续时间较长的灰霾天气集中出现在冬季11月至翌年2月。灰霾天气持续时间与年代际变化有关,2000年前,银川未出现持续5d以上的灰霾天气过程;2000年后,随着灰霾天气日数增多,灰霾持续时间延长。
대1961—2008년은천시회매천기일수자료진행분석。결과표명：은천시회매천기정축점증가적추세2,0세기80년대전위완만증가계단,20세기후회매천기현저증가2,000년후회매천기급극증가。은천시회매일수최다위12월,기차위11월,최소위5월,정현출동계대우추계대우춘계대우하계적계절특정。일반정황하,은천시회매일수지속1—3d,지속2d급이상적회매천기점17%,지속5d급이상적회매천기점1%。지속시간교장적회매천기집중출현재동계11월지익년2월。회매천기지속시간여년대제변화유관,2000년전,은천미출현지속5d이상적회매천기과정;2000년후,수착회매천기일수증다,회매지속시간연장。
Based on the observational data from 1961 to 2008 in Yinchuan,the days of haze weather were analyzed.The results indicate that the days of haze weather are in increasing trends.They increase slowly before 1980s,significantly after 1980s and sharply after 2000.The days of haze weather appear frequently in December,then in November,and least in May,namely,winter autumn spring summer.In general,the duration of haze weather is 1-3 days.17% haze weather could last 2 days or more,while 1% haze weather could last 5 days or more.The persistent haze weather concentrates from November to February.The haze weather duration is related to its annual change.The haze weather persisting 5 days or more never occurs before 2000 in Yinchuan,while the haze duration extends with the increase of haze days after 2000.