Size Distributions of Aerosol Particles in the Free Troposphere: Aircraft Measurements in the Spring of 1991-1994 Over Japan

對流層內懸浮微粒之粒徑分布：1991-1994年間日本航程資料分析

Yasunobu Iwasaka ； Ikuko Mori ； Masahiro Nagatani ； Hiroshi Nakada ； Katsuji Matsunaga ； Hideaki Nakane

《Terrestrial, Atmospheric and Oceanic Sciences》 7卷1期 (1996/03) Pp. 43-60

並列摘要

Measurements of number-, mass-, and volume-size distributions of free tropospheric aerosols were made over Japan in the spring of 1991-1994.
Number-size distribution frequently shows a peak in the area of a diameter of D≥1μm in the free troposphere during observational periods. A few peaks are identified in the volume-size distribution as estimated on the basis of number-size distribution having single mode in a coarse range. Mass-size distribution frequently indicate enhancement in the coarse size range. This feature of the distribution is more frequent in those measurements made at 4.4(±0.3) km than those at 2.3(±0.3) km.
On the basis of a backward trajectory analysis of an air mass containing those particles, soil particles originating in the Asian continent affect the features found in the size distributions as well as vertical change in those size distributions.

並列關鍵字

Asian dust particle ； Size distribution ； Free troposphere