SIZE DISTRIBUTION, CHEMICAL COMPOSITION, AND OPTICAL-PROPERTIES OF URBAN AND DESERT AEROSOLS IN ISRAEL

被引:57
作者
LEVIN, Z
LINDBERG, JD
机构
[1] TEL AVIV UNIV, DEPT GEOL & PLANETARY SCI, RAMAT AVIV, ISRAEL
[2] USA, ATMOSPHER SCI LAB, WHITE SANDS MISSILE RANGE, NM 88002 USA
关键词
D O I
10.1029/JC084iC11p06941
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
Measurements of aerosol size distributions, chemical composition, and optical properties were carried out at two locations in Israel, Tel Aviv, an urban region, and Mitzpe Ramon, a desert region. Diurnal variations between day and night are observed in the size distribution of the summertime measurements in Tel Aviv, related to the increase in aerosol size due to absorption of water vapor during high relative humidity periods. During westerly flow, aerosols contain large amounts of NaCl particles, which are not usually found in the desert. During Sharav conditions the aerosols in Tel Aviv are very similar to those found in the desert. Measurements of imaginary refractive index in the 0.3- to 1.7-micrometre spectral region are presented. These measurements are consistently higher by a factor of 2-4 in Tel Aviv as compared to simultaneous samples from the desert site. The size distribution, composition, and imaginary refractive index observations are interpreted in terms of aerosol origins and prevailing local and synoptic scale meteorological conditions.- from Author
引用
收藏
页码:6941 / 6950
页数:10
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