...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >Model-measurement consistency and limits of bioaerosol abundance over the continental United States
【24h】

Model-measurement consistency and limits of bioaerosol abundance over the continental United States

机译：在美国大陆的模型 - 测量一致性和生物溶胶丰富的限制

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

摘要

Due to low concentrations and chemical complexity, in situ observations of bioaerosol are geographically and temporally sparse, and this limits the accuracy of current emissions inventories. In this study, we apply a new methodology, including corrections for misidentification of mineral dust, to measurements of single particles over four airborne sampling campaigns to derive vertical profiles of bioaerosol over the continental United States. The new methodology is based on single-particle mass spectrometry (SPMS); it can extend historic datasets to include measurements of bioaerosol, it allows comparisons to other techniques, and it generally agrees with a global aerosol model. In the locations sampled, bioaerosols were at least a factor of 10 less abundant than mineral dust. Below 2 km, bioaerosol concentrations were measured between 6×103 and 2×104 m?3. Between 2 and 8 km, bioaerosol concentrations were between 0 and 2×104 m?3, and above 8 km, bioaerosol concentrations were between 0 and 1×103 m?3. Between 30 % and 80 % of single bioaerosol particles detected were internally mixed with dust. A direct comparison of the SPMS methodology with a co-located wideband integrated bioaerosol sensor (WIB) fluorescence sensor on a mountaintop site showed agreement to within a factor of 3 over the common size range.
机译：由于低浓度和化学复杂性，原位观察Bioaerosol是地理上和时间稀疏的，这限制了当前排放库存的准确性。在这项研究中，我们应用一种新方法，包括矿物粉尘的误诊，包括四个空中采样运动的单个粒子的测量，以导出在美国大陆的生物溶胶垂直曲线。新方法基于单粒子质谱（SPM）;它可以扩展历史数据集以包括生物溶胶的测量，它允许比较其他技术，并且通常与全球气溶胶模型同意。在取样的位置，生物溶胶比矿物粉尘更少10个倍数。低于2公里，在6×103和2×104m≤3之间测量生物溶胶浓度。在2到8km之间，生物溶胶浓度在0到2×104m？3之间，并且在8km以上，生物溶胶浓度为0至1×103m≤3。检测到的30％至80％的单一生物溶胶颗粒在内部混合灰尘。在山顶网站上与共同定位的宽带集成生物激素传感器（WIB）荧光传感器的直接比较山顶网站的荧光传感器显示在共同尺寸范围内的3倍。

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