首页> 外文期刊>Journal of earth system science >Enhancement and identification of dust events in the south-west region of Iran using satellite observations
【24h】

Enhancement and identification of dust events in the south-west region of Iran using satellite observations

机译:利用卫星观测增强和识别伊朗西南地区的沙尘事件

获取原文
       

摘要

South-west Asia including the Middle East is one of the most prone regions to dust storm events. In recent years, there was an increase in the occurrence of these environmental and meteorological phenomena. Remote sensing could serve as an applicable method to detect and also characterise these events. In this study, two dust enhancement algorithms were used to investigate the behaviour of dust events using satellite data, compare with numerical model output and other satellite products and finally validate with in-situ measurements. The results show that the use of thermal infrared algorithm enhances dust moreaccurately. The aerosol optical depth from MODIS and output of a Dust Regional Atmospheric Model (DREAM8b) are applied for comparing the results. Ground-based observations of synoptic stations and sun photometers are used for validating the satellite products. To find the transport direction and thelocations of the dust sources and the synoptic situations during these events, model outputs (HYSPLIT and NCEP/NCAR) are presented. Comparing the results with synoptic maps and the model outputs showed that using enhancement algorithms is a more reliable way than any other MODIS products or model outputs to enhance the dust.
机译:包括中东在内的西南亚是最容易发生沙尘暴事件的地区之一。近年来,这些环境和气象现象的发生率有所增加。遥感可以用作检测和表征这些事件的适用方法。在这项研究中,使用了两种除尘算法,利用卫星数据调查了尘埃事件的行为,并与数值模型输出和其他卫星产品进行了比较,最后通过现场测量进行了验证。结果表明,利用热红外算法可以更准确地增强粉尘。来自MODIS的气溶胶光学深度和粉尘区域大气模型(DREAM8b)的输出用于比较结果。利用天气观测站和太阳光度计的地面观测来验证卫星产品。为了找到这些事件期间尘埃源的输送方向和位置以及天气情况,提出了模型输出(HYSPLIT和NCEP / NCAR)。将结果与天气图和模型输出进行比较表明,使用增强算法是比其他任何MODIS产品或模型输出增强灰尘的更可靠的方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号