当前位置: X-MOL 学术J. Appl. Remote Sens. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Lidar study of unusual winter Saharan dust loads above Sofia, Bulgaria: impacts on the local weather and troposphere
Journal of Applied Remote Sensing ( IF 1.4 ) Pub Date : 2021-05-01 , DOI: 10.1117/1.jrs.15.024517
Atanaska Deleva 1 , Zahari Peshev 1 , Liliya Vulkova 1 , Tanja Dreischuh 1
Affiliation  

We report results of lidar studies of the atmospheric aerosols present above the city of Sofia during four episodes of wintertime Saharan dust intrusions in the last decade. The optical and microphysical properties of the detected aerosols, as well as the aerosol layering and dynamics, are retrieved and characterized. By combining lidar results with in situ PM10 concentration measurement data and air-transport modeling/forecast data, the effects of mixing and interaction of desert aerosols with local ones are analyzed as dependent on the altitude range, phase, and intensity of the dust load events. Included in the analysis are also meteorological radiosonde data, which allow us to ascertain the direct and strong influence of the desert air and aerosols on the local atmospheric conditions and meteorological parameters and thus, indirectly, on essential components of the local weather, such as the seasonal thermal regime and the regimes of cloud formation and precipitation. Using online resources, color maps of air temperature anomalies in the region for the days of lidar measurements are also provided based on climatological data over the three preceding decades. The results presented are in conformity with previously published statistical data of other authors and indicate that the wintertime intrusions of warm air masses from North Africa carrying Saharan dust to Europe, and particularly to the Balkans, rare and atypical until recently, nowadays show a trend of increasing in terms of frequency and intensity, pointing to deviations in the seasonal regime of the involved intercontinental air circulation systems.

中文翻译:

保加利亚索非亚上空异常冬季撒哈拉沙尘负荷的激光雷达研究:对当地天气和对流层的影响

我们报告了过去十年四次冬季撒哈拉沙尘入侵期间索非亚市上空大气气溶胶的激光雷达研究结果。检索和表征检测到的气溶胶的光学和微物理特性,以及气溶胶分层和动力学。通过将激光雷达结果与原位 PM10 浓度测量数据和航空运输建模/预测数据相结合,分析了沙漠气溶胶与当地气溶胶混合和相互作用的影响,取决于沙尘载荷事件的高度范围、相位和强度. 分析中还包括气象无线电探空仪数据,这使我们能够确定沙漠空气和气溶胶对当地大气条件和气象参数的直接和强烈影响,从而间接地,取决于当地天气的基本组成部分,例如季节性热状况以及云的形成和降水状况。使用在线资源,还根据前三年的气候数据提供了激光雷达测量期间该地区气温异常的彩色地图。所提供的结果与其他作者先前发表的统计数据一致,并表明冬季从北非将撒哈拉沙尘带到欧洲,特别是巴尔干地区的暖气团侵入,直到最近才罕见和非典型,现在呈现出一种趋势频率和强度的增加,表明所涉及的洲际空气循环系统的季节性变化。例如季节性热状况以及云形成和降水状况。使用在线资源,还根据前三年的气候数据提供了激光雷达测量期间该地区气温异常的彩色地图。给出的结果与其他作者先前发表的统计数据一致,并表明冬天从北非携带撒哈拉粉尘进入欧洲,特别是巴尔干半岛的暖空气团侵入,直到最近,这种现象很少见,并且不典型,直到今天,这种趋势仍在继续。频率和强度的增加,表明所涉及的洲际空气循环系统的季节性变化。例如季节性热状况以及云形成和降水状况。使用在线资源,还根据前三年的气候数据提供了激光雷达测量期间该地区气温异常的彩色地图。所提供的结果与其他作者先前发表的统计数据一致,并表明冬季从北非将撒哈拉沙尘带到欧洲,特别是巴尔干地区的暖气团侵入,直到最近才罕见和非典型,现在呈现出一种趋势频率和强度的增加,表明所涉及的洲际空气循环系统的季节性变化。还根据前三年的气候数据提供了激光雷达测量期间该地区气温异常的彩色地图。所提供的结果与其他作者先前发表的统计数据一致,并表明冬季从北非将撒哈拉沙尘带到欧洲,特别是巴尔干地区的暖气团侵入,直到最近才罕见和非典型,现在呈现出一种趋势频率和强度的增加,表明所涉及的洲际空气循环系统的季节性变化。还根据前三年的气候数据提供了激光雷达测量期间该地区气温异常的彩色地图。所提供的结果与其他作者先前发表的统计数据一致,并表明冬季从北非将撒哈拉沙尘带到欧洲,特别是巴尔干地区的暖气团侵入,直到最近才罕见和非典型,现在呈现出一种趋势频率和强度的增加,表明所涉及的洲际空气循环系统的季节性变化。
更新日期:2021-05-28
down
wechat
bug