An instrument for measuring size-resolved aerosol hygroscopicity at both sub- and super-micron sizes

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Authors
Hegg, Dean A.
Covert, David S.
Jonsson, Haflidi
Covert, Paul A.
Subjects
Advisors
Date of Issue
2007
Date
Publisher
American Association for Aerosol Research
Language
Abstract
A new instrument to measure the size-resolved hygroscopic growth of both sub- and super-micron atmospheric aerosol is described. It consists of two white-light optical particle counters measuring the same sample aerosol simultaneously at two different controlled relative humidities. Calibration with aerosols of different refractive index confirms the expected relative insensitivity of the instrument to index of refraction. Data obtained in the field from airborne sampling support the utility of the instrument in measuring differences in size-resolved hygroscopicity in the marine boundary layer and also in addressing the issue of kinetic limitations to aerosol condensational growth.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1080/02786820701506955
Series/Report No
Department
Center for Interdisciplinary Remotely Piloted Aircraft Studies
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Office of Naval Research
Funder
Grant no. N0014-97-1-0132
Format
11 p.
Citation
Dean A. Hegg, David S. Covert, Haflidi Jonsson, Paul A. Covert, "An instrument for measuring size-resolved aerosol hygroscopicity at both sub- and super-micron sizes," Aerosol Science and Technology, v. 41, (2007) , pp. 873-883.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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