...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric environment >Pittsburgh air quality study overview
【24h】

Pittsburgh air quality study overview

机译：匹兹堡空气质量研究概述

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ambient sampling for the Pittsburgh Air Quality Study (PAQS) was conducted from July 2001 to September 2002. The study was designed (1) to characterize particulate matter (PM) by examination of size, surface area, and volume distribution, chemical composition as a function of size and on a single particle basis, morphology, and temporal and spatial variability in the Pittsburgh region; (2) to quantify the impact of the various sources (transportation, power plants, biogenic sources, etc.) on the aerosol concentrations in the area; and (3) to develop and evaluate the next generation of atmospheric aerosol monitoring and modeling techniques. The PAQS objectives, study design, site descriptions and routine and intensive measurements are presented. Special study days are highlighted, including those associated with elevated concentrations of daily average PM_(2.5) mass. Monthly average and diurnal patterns in aerosol number concentration, and aerosol nitrate, sulfate, elemental carbon, and organic carbon concentrations, light scattering as well as gas-phase ozone, nitrogen oxides, and carbon monoxide are discussed with emphasis on the processes affecting them. Preliminary findings reveal day-to-day variability in aerosol mass and composition, but consistencies in seasonal average diurnal profiles and concentrations. For example, the seasonal average variations in the diurnal PM_(2.5) mass were predominately driven by the sulfate component.
机译：2001年7月至2002年9月进行了匹兹堡空气质量研究（PAQS）的环境采样。该研究旨在（1）通过检查尺寸，表面积和体积分布，化学成分来表征颗粒物（PM）。匹兹堡地区的大小和单个粒子的功能，形态以及时空变化； （2）量化各种来源（运输，发电厂，生物来源等）对该地区气溶胶浓度的影响； （3）开发和评估下一代大气气溶胶监测和建模技术。提出了PAQS的目标，研究设计，场所描述以及常规和强化测量。突出显示了特殊研究日，包括那些与日平均PM_（2.5）质量浓度升高相关的日。讨论了气溶胶数浓度，硝酸盐气溶胶，硫酸盐，元素碳和有机碳浓度，光散射以及气相臭氧，氮氧化物和一氧化碳的月平均和昼夜模式，重点是影响它们的过程。初步发现揭示了气溶胶质量和组成的日常变化，但季节性平均日变化和浓度一致。例如，昼夜PM_（2.5）质量的季节性平均变化主要受硫酸盐成分驱动。

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