Trends in visibility over Hungary between 1996 and 2002

被引：36

作者：

Molnar, A. ^{[1
]}

Meszaros, E. ^{[2
]}

Imre, K. ^{[2
]}

Rull, A. ^{[2
]}

机构：

[1] Hungarian Acad Sci, H-8201 Veszprem, Hungary

[2] Univ Pannonia, Dept Earth & Environm Sci, H-8201 Veszprem, Hungary

来源：

ATMOSPHERIC ENVIRONMENT | 2008年 / 42卷 / 11期

基金：

匈牙利科学研究基金会;

关键词：

relative humidity; visibility; aerosol extinction; temporal and spatial distribution;

D O I：

10.1016/j.atmosenv.2007.05.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The spatial distribution and temporal variability of visibility data measured at 23 stations in Hungary show that changes have occurred between 1996 and 2002. Extinction coefficients were calculated from visual range observations using the Koschmieder formula, and dry extinction coefficients were estimated by fitting them to power functions of relative humidity. The lowest visibilities were found over the Great Hungarian Plain, probably because of the effects of particles of surface origin. At all but two stations the visibility increased from 1996 to 2002, probably due to the decreased load of anthropogenic aerosol particles. This finding is in excellent agreement with the significant decrease in the emission of sulfur dioxide. During the 6 years studied there was an important improvement in atmospheric light attenuation over Hungary. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2621 / 2629

页数：9

共 14 条

[1]

[Anonymous], ATMOSPHERIC ACIDITY

[2] New Directions: Visual range - an under-utilised metric for European air quality [J].