OBSERVED PARTICLE EVOLUTION IN THE POLAR STRATOSPHERIC CLOUD OF JANUARY 24, 1989

被引：38

作者：

DYE, JE

GANDRUD, BW

BAUMGARDNER, D

CHAN, KR

FERRY, GV

LOEWENSTEIN, M

KELLY, KK

WILSON, JC

机构：

[1] NASA,AMES RES CTR,MOFFETT FIELD,CA 94035

[2] NOAA,AERON LAB,BOULDER,CO 80303

[3] UNIV DENVER,DENVER,CO 80208

来源：

GEOPHYSICAL RESEARCH LETTERS | 1990年 / 17卷 / 04期

关键词：

D O I：

10.1029/GL017i004p00413

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Particle size distributions measured from the NASA ER‐2 with the new Forward Scattering Spectrometer Probe (FSSP) 300 in a type I polar stratospheric cloud (PSC) on January 24, 1989 show a volume mode near 0.8 μm diameter. The large increase in particle concentration and volume after cloud entry did not occur until the apparent saturation ratio of nitric acid with respect to nitric acid trihydrate reached 10, but at ratios near 1 subtle changes in the size distribution suggest some type I particles were present. Particle concentrations in cloud of 15 to 17 cm−3 were greater than the CN concentrations of 5 to 7 cm−3 just outside of cloud, suggesting nucleation on more than just sulfate particles. Some particles > 4 μm diameter were observed in a region which was saturated with respect to ice. Copyright 1990 by the American Geophysical Union.

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收藏

页码：413 / 416

页数：4

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