Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol
The influence of aerosol water uptake on the aerosol particle light scattering was examined at the regional continental research site Melpitz, Germany. The scattering enhancement factor f(RH), defined as the aerosol particle scattering coefficient at a certain relative humidity (RH) divided by its d...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Stockholm University Press
2014-03-01
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| Series: | Tellus: Series B, Chemical and Physical Meteorology |
| Subjects: | |
| Online Access: | http://www.tellusb.net/index.php/tellusb/article/download/22716/pdf_1 |
| _version_ | 1818037949640474624 |
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| author | Paul Zieger Rahel Fierz-Schmidhauser Laurent Poulain Thomas Müller Wolfram Birmili Gerald Spindler Alfred Wiedensohler Urs Baltensperger Ernest Weingartner |
| author_facet | Paul Zieger Rahel Fierz-Schmidhauser Laurent Poulain Thomas Müller Wolfram Birmili Gerald Spindler Alfred Wiedensohler Urs Baltensperger Ernest Weingartner |
| author_sort | Paul Zieger |
| collection | DOAJ |
| description | The influence of aerosol water uptake on the aerosol particle light scattering was examined at the regional continental research site Melpitz, Germany. The scattering enhancement factor f(RH), defined as the aerosol particle scattering coefficient at a certain relative humidity (RH) divided by its dry value, was measured using a humidified nephelometer. The chemical composition and other microphysical properties were measured in parallel. f(RH) showed a strong variation, e.g. with values between 1.2 and 3.6 at RH=85% and λ=550 nm. The chemical composition was found to be the main factor determining the magnitude of f(RH), since the magnitude of f(RH) clearly correlated with the inorganic mass fraction measured by an aerosol mass spectrometer (AMS). Hysteresis within the recorded humidograms was observed and explained by long-range transported sea salt. A closure study using Mie theory showed the consistency of the measured parameters. |
| first_indexed | 2024-12-10T07:34:58Z |
| format | Article |
| id | doaj.art-411d5ad955ff47f4859b2fc957b4deb6 |
| institution | Directory Open Access Journal |
| issn | 1600-0889 |
| language | English |
| last_indexed | 2024-12-10T07:34:58Z |
| publishDate | 2014-03-01 |
| publisher | Stockholm University Press |
| record_format | Article |
| series | Tellus: Series B, Chemical and Physical Meteorology |
| spelling | doaj.art-411d5ad955ff47f4859b2fc957b4deb62022-12-22T01:57:27ZengStockholm University PressTellus: Series B, Chemical and Physical Meteorology1600-08892014-03-0166011410.3402/tellusb.v66.2271622716Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosolPaul Zieger0Rahel Fierz-Schmidhauser1Laurent Poulain2Thomas Müller3Wolfram Birmili4Gerald Spindler5Alfred Wiedensohler6Urs Baltensperger7Ernest Weingartner8 Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villigen, Switzerland Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villigen, Switzerland Leibniz Institute for Tropospheric Research, Leipzig, Germany Leibniz Institute for Tropospheric Research, Leipzig, Germany Leibniz Institute for Tropospheric Research, Leipzig, Germany Leibniz Institute for Tropospheric Research, Leipzig, Germany Leibniz Institute for Tropospheric Research, Leipzig, Germany Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villigen, Switzerland Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villigen, SwitzerlandThe influence of aerosol water uptake on the aerosol particle light scattering was examined at the regional continental research site Melpitz, Germany. The scattering enhancement factor f(RH), defined as the aerosol particle scattering coefficient at a certain relative humidity (RH) divided by its dry value, was measured using a humidified nephelometer. The chemical composition and other microphysical properties were measured in parallel. f(RH) showed a strong variation, e.g. with values between 1.2 and 3.6 at RH=85% and λ=550 nm. The chemical composition was found to be the main factor determining the magnitude of f(RH), since the magnitude of f(RH) clearly correlated with the inorganic mass fraction measured by an aerosol mass spectrometer (AMS). Hysteresis within the recorded humidograms was observed and explained by long-range transported sea salt. A closure study using Mie theory showed the consistency of the measured parameters.http://www.tellusb.net/index.php/tellusb/article/download/22716/pdf_1aerosol particle light scatteringhygroscopic growthscattering enhancementaerosol mass spectrometerfield measurementsoptical closure study |
| spellingShingle | Paul Zieger Rahel Fierz-Schmidhauser Laurent Poulain Thomas Müller Wolfram Birmili Gerald Spindler Alfred Wiedensohler Urs Baltensperger Ernest Weingartner Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol Tellus: Series B, Chemical and Physical Meteorology aerosol particle light scattering hygroscopic growth scattering enhancement aerosol mass spectrometer field measurements optical closure study |
| title | Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol |
| title_full | Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol |
| title_fullStr | Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol |
| title_full_unstemmed | Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol |
| title_short | Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol |
| title_sort | influence of water uptake on the aerosol particle light scattering coefficients of the central european aerosol |
| topic | aerosol particle light scattering hygroscopic growth scattering enhancement aerosol mass spectrometer field measurements optical closure study |
| url | http://www.tellusb.net/index.php/tellusb/article/download/22716/pdf_1 |
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