Aeolian Research ( IF 3.3 ) Pub Date : 2021-01-21 , DOI: 10.1016/j.aeolia.2021.100673 Hakki Baltaci
This study investigates dust storm events and their associations with synoptic conditions for the seven geographical regions of Turkey Present weather reports from synoptic codes of 89 meteorology stations and 80 air quality stations from 2014 to 2019 were used to establish the climatological properties of frequent dust storm event days (DEDs) and high dust concentrations over Turkey. To investigate the role of synoptic mechanisms on DEDs, NCEP/NCAR daily mean sea level pressure and 700-hPa height values were used during DEDs for each region. According to the results, Marmara (MR), Aegean (AR), Central Anatolian (CAR), and Black Sea (BSR) regions are influenced by dust storms especially in spring months, and the movement of Sharav cyclones from its source location to Italy and Balkan Peninsula are responsible for transporting high amount of dust particles from the Sahara by strong south and/or southwesterly winds. On the other side, highest daily numbers of dust storms are observed in the Eastern- (EAR) and Southeastern- Anatolian Regions (SEAR) of Turkey during whole year, but mostly in spring and fall months. Differently from the other regional dust source areas, Arabian desert dust is frequently shown in these two regions of Turkey. In SEAR, while surface Cyprus Low and upper level Cyprus trough and associated strong southeasterly winds contribute to have high PM10 concentrations during winter and spring; surface Asiatic monsoon low enables transferring of Arabian dust particles to the region via dry hot air during summer and fall seasons.
中文翻译:
土耳其沙尘暴事件的气象特征
这项研究调查了土耳其七个地理区域的沙尘暴事件及其与天气条件的关系。根据2014年至2019年间89个气象站和80个空气质量站的天气法典的天气报告,用于确定沙尘暴频繁发生的气候特征天(DED)和高尘土含量的土耳其。为了研究天气机制对DED的作用,在每个区域的DED期间使用NCEP / NCAR日平均海平面压力和700-hPa高度值。根据结果,马尔马拉(MR),爱琴海(AR),中安纳托利亚(CAR)和黑海(BSR)地区受到沙尘暴的影响,尤其是在春季,沙拉夫旋风从其源头地点到意大利和巴尔干半岛的移动,是通过强南风和/或西南风将大量尘埃颗粒从撒哈拉沙漠中运出的原因。另一方面,全年在土耳其东部(EAR)和东南部安纳托利亚地区(SEAR)观察到的沙尘暴次数最高,但大部分发生在春季和秋季。与其他区域尘埃来源地区不同,土耳其的这两个地区经常显示阿拉伯沙漠尘埃。在SEAR,地面塞浦路斯低和高层塞浦路斯海槽及相关的强东南风有助于产生较高的PM 全年在土耳其东部(EAR)和东南部安纳托利亚地区(SEAR)观察到的沙尘暴次数最多,但大部分发生在春季和秋季。与其他区域尘埃来源地区不同,土耳其的这两个地区经常显示阿拉伯沙漠尘埃。在SEAR,地面塞浦路斯低和高层塞浦路斯海槽及相关的强东南风有助于产生较高的PM 全年在土耳其东部(EAR)和东南部安纳托利亚地区(SEAR)观察到的沙尘暴次数最多,但大部分发生在春季和秋季。与其他区域尘埃来源地区不同,土耳其的这两个地区经常显示阿拉伯沙漠尘埃。在SEAR,地面塞浦路斯低和高层塞浦路斯海槽及相关的强东南风有助于产生较高的PM冬季和春季有10种浓度;在亚洲,由于季风低压,在夏季和秋季,可以通过干燥的热空气将阿拉伯尘埃颗粒转移到该地区。