Variation of mass scattering efficiencies in IMPROVE

被引：32

作者：

Lowenthal, DH

Kumar, N

机构：

[1] Desert Res Inst, Reno, NV 89512 USA

[2] EPRI, Palo Alto, CA USA

来源：

JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION | 2004年 / 54卷 / 08期

关键词：

D O I：

10.1080/10473289.2004.10470969

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The Interagency Monitoring of Protected Visual Environments (IMPROVE) equation used to assess compliance under the U.S. Environmental Protection Agency (EPA) Haze Rule assumes that dry mass scattering efficiencies for aerosol chemical components are constant. However, examination of aerosol size distributions and chemical composition during the Big Bend Regional Aerosol and Visibility Observational Study and the Southeastern Aerosol and Visibility Study suggests that volume and mass scattering efficiencies vary directly with increasing particle light scattering and aerosol mass concentration. This is consistent with the observation that particle distributions were shifted to larger sizes under more polluted conditions and appears to be related to aging of the aerosol during transport to remote locations.

引用

收藏

页码：926 / 934

页数：9

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