Hygroscopic properties of atmospheric aerosol in Riverside, California

Mark J Rood, D. S. Covert, T. V. Larson

Research output: Contribution to journalArticlepeer-review

Abstract

The hygroscopic properties of atmospheric aerosol were investigated by performing in-situ optical measurements under controlled temperature and relative humidity conditions. Complementary measurements included ambient relative humidity and aerosol filter sampling. Measurements were performed in Riverside, California during the months of August and September, 1983. Experimental results indicate that ambient aerosol particles, with diameters less than 2 micrometer, exhibited deliquescence between 73 and 78% relative humidity during 52% of the measurements. During a one-week intensive sampling period, ambient aerosol particles existed as droplets during 86% of the tests and were dry during the balance of measurements. When ambient aerosol droplets were detected, they were supersaturated with respect to solute concentration during 71% of tests and were otherwise saturated with respect to solute concentration. -from Authors

Original languageEnglish (US)
Pages (from-to)383-397
Number of pages15
JournalTellus, Series B
Volume39 B
Issue number4
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Atmospheric Science

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