...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>E3S Web of Conferences >Contrasting variation in aerosol optical properties during dust episodes in the Middle East and Southwest Asia: Model results and ground measurement
【24h】

Contrasting variation in aerosol optical properties during dust episodes in the Middle East and Southwest Asia: Model results and ground measurement

机译：中东和西南亚沙尘暴期间气溶胶光学特性的对比变化：模型结果和地面测量

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dust storms deteriorated air quality over the Gulf Region, Iraq, Iran, and Pakistan during the last decade. The purpose of this study is to investigate the changes in aerosol optical and radiative properties during a dust episode over the various locations in the Middle East and Southwest Asia using data from the MODerate resolution Imaging Spectroradiometer (MODIS) and the Aerosol Robotic Network (AERONET) during March, 2012. Maximum aerosol optical depth (AOD) values were found to be 2.18, 1.30, 4.33 and 1.80 over Lahore, Kanpur, Kaust, and Mezaira, respectively. The Volume Size Distributions, Single Scattering Albedo, Refractive Index, and Asymmetry parameter indicated that coarse mode aerosols were predominant relative to fine mode aerosols during the dust event. The average shortwave aerosol radiative forcing (ARF) values at the earth’s surface were found to be -96±45 W m~(-2), -86±22 W m~(-2), -77±51 W m~(-2), and -75±40 W m~(-2), over Lahore, Kanpur, Kaust and Mezaira, respectively. Likewise, the averaged ARF values over Lahore, Kanpur, Kaust and Mezaira at the top of the atmosphere (TOA) were found to be -45±25 W m~(-2),~(-2)7±9 W m~(-2), -41±29 W m~(-2), and -75±40 W m~(-2), respectively. The large differences between surface and TOA forcing produced significant heating within the atmosphere.
机译：在过去十年中，沙尘暴使海湾地区，伊拉克，伊朗和巴基斯坦的空气质量恶化。这项研究的目的是使用MODerate解析度成像光谱仪（MODIS）和气溶胶机器人网络（AERONET）的数据，调查中东和西南亚不同地点的一次沙尘暴过程中气溶胶光学和辐射特性的变化。在2012年3月期间。发现拉合尔，坎普尔，考斯特和Mezaira的最大气溶胶光学深度（AOD）值分别为2.18、1.30、4.33和1.80。 “体积大小分布”，“单散射反照率”，“折射率”和“非对称性”参数表明，在粉尘事件期间，粗模式气溶胶相对于精细模式气溶胶占主导地位。地表平均短波气溶胶辐射强迫（ARF）值为-96±45 W m〜（-2），-86±22 W m〜（-2），-77±51 W m〜（ -2）和-75±40 W m〜（-2），分别超过拉合尔，坎普尔，考斯特和Mezaira。同样，在大气层顶部（TOA）的拉合尔，坎普尔，考斯特和梅泽拉的平均ARF值被发现为-45±25 W m〜（-2），〜（-2）7±9 W m〜 （-2），-41±29 W m〜（-2）和-75±40 W m〜（-2）。表面和TOA强迫之间的巨大差异在大气中产生了明显的热量。

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