本文選題：氣溶膠 + 沙塵��； 參考：《中國沙漠》2016年05期

【摘要】：咸海水位不斷下降導致湖濱荒漠化加劇,塵暴頻發(fā),區(qū)域環(huán)境惡化。利用臭氧觀測儀(OMI)氣溶膠數(shù)據(jù)和HYSPLIT(Hybrid Single Particle Lagrangian Integrated Trajectory Model)模型,對咸海地區(qū)近期粉塵氣溶膠變化及其潛在擴散特征進行了研究。結(jié)果表明:2005年以來,咸海地區(qū)粉塵活動不斷增強,OMI氣溶膠指數(shù)年平均值、方差、中值和最大值均呈現(xiàn)快速增加趨勢,2013年OMI氣溶膠指數(shù)平均值已經(jīng)上升至1.47;OMI氣溶膠指數(shù)具有明顯的季節(jié)變化特征,春季(3—5月)和秋末初冬(11月—次年1月)是兩個氣溶膠指數(shù)峰值區(qū);在相同時間內(nèi),春季和冬季的粉塵潛在擴散范圍最大,秋季次之,夏季最小,且粉塵潛在擴散表現(xiàn)出明顯的經(jīng)向和緯向擴散特征;受氣流和地形影響,粉塵潛在擴散主要有東北和西南兩個方向。
[Abstract]:The declining water level of the Aral Sea leads to the desertification of the lakeside, frequent dust storms and the deterioration of the regional environment. The recent dust aerosol variation and its potential diffusion characteristics in the Aral Sea region were studied by using the OMI aerosol data and the HYSPLIT(Hybrid Single Particle Lagrangian Integrated Trajectory Model) model. The results show that the dust activity in the Aral Sea area has been increasing since 2005, the annual mean value and variance of the OMI aerosol index, The mean value and maximum value of OMI aerosol index increased rapidly, and the average value of OMI aerosol index increased to 1.47 OMI aerosol index in 2013. The peak regions of aerosol index in spring and winter (November to January of the following year) are two aerosol index peaks, and the potential diffusion range of dust in spring and winter is the largest in spring and winter, followed by autumn and summer, in the same time, the peak value of aerosol index is the highest in spring and winter, and the lowest in summer. The potential diffusion of dust shows obvious characteristics of meridional and zonal diffusion, and the potential diffusion of dust is mainly in northeast and southwest due to the influence of air flow and topography.
【作者單位】： 中國科學院新疆生態(tài)與地理研究所荒漠與綠洲生態(tài)國家重點實驗室;中國科學院中亞生態(tài)與環(huán)境研究中心;新疆師范大學生命科學學院;南京農(nóng)業(yè)大學植物保護學院/農(nóng)作物生物災害綜合治理教育部重點實驗室;內(nèi)蒙古大學環(huán)境與資源學院;
【基金】：國家自然科學基金項目(41471098)
【分類號】：P425.55;X513

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