Seven years of aerosol scattering hygroscopic growth measurements from SGP: Factors influencing water uptake.
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| Title: | Seven years of aerosol scattering hygroscopic growth measurements from SGP: Factors influencing water uptake. |
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| Authors: | Jefferson, A.1,2, Hageman, D.1,2, Morrow, H.2,3, Mei, F.4, Watson, T.5 |
| Source: | Journal of Geophysical Research. Atmospheres. Sep2017, Vol. 122 Issue 17, p9451-9466. 16p. |
| Abstract: | Long-term measurements of changes in the aerosol scattering coefficient hygroscopic growth at the U.S. Department of Energy Southern Great Plains site provide information on the seasonal as well as size and chemical dependence of aerosol water uptake. Annual average sub-10 μm fRH values (the ratio of aerosol scattering at 85%/40% relative humidity (RH)) were 1.78 and 1.99 for the gamma and kappa fit algorithms, respectively. The study found higher growth rates in the winter and spring seasons that correlated with a high aerosol nitrate mass fraction. fRH exhibited strong, but differing, correlations with the scattering Ångström exponent and backscatter fraction, two optical size-dependent parameters. The aerosol organic mass fraction had a strong influence on fRH. Increases in the organic mass fraction and absorption Ångström exponent coincided with a decrease in fRH. Similarly, fRH declined with decreases in the aerosol single scatter albedo. Uncertainty analysis of the fit algorithms revealed high uncertainty at low scattering coefficients and increased uncertainty at high RH and fit parameters values. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 125349884 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Seven years of aerosol scattering hygroscopic growth measurements from SGP: Factors influencing water uptake. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jefferson%2C+A%2E%22">Jefferson, A.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hageman%2C+D%2E%22">Hageman, D.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Morrow%2C+H%2E%22">Morrow, H.</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Mei%2C+F%2E%22">Mei, F.</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Watson%2C+T%2E%22">Watson, T.</searchLink><relatesTo>5</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Atmospheres%22">Journal of Geophysical Research. Atmospheres</searchLink>. Sep2017, Vol. 122 Issue 17, p9451-9466. 16p. – Name: Abstract Label: Abstract Group: Ab Data: Long-term measurements of changes in the aerosol scattering coefficient hygroscopic growth at the U.S. Department of Energy Southern Great Plains site provide information on the seasonal as well as size and chemical dependence of aerosol water uptake. Annual average sub-10 μm fRH values (the ratio of aerosol scattering at 85%/40% relative humidity (RH)) were 1.78 and 1.99 for the gamma and kappa fit algorithms, respectively. The study found higher growth rates in the winter and spring seasons that correlated with a high aerosol nitrate mass fraction. fRH exhibited strong, but differing, correlations with the scattering Ångström exponent and backscatter fraction, two optical size-dependent parameters. The aerosol organic mass fraction had a strong influence on fRH. Increases in the organic mass fraction and absorption Ångström exponent coincided with a decrease in fRH. Similarly, fRH declined with decreases in the aerosol single scatter albedo. Uncertainty analysis of the fit algorithms revealed high uncertainty at low scattering coefficients and increased uncertainty at high RH and fit parameters values. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Atmospheres is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/2017JD026804 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 9451 Titles: – TitleFull: Seven years of aerosol scattering hygroscopic growth measurements from SGP: Factors influencing water uptake. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jefferson, A. – PersonEntity: Name: NameFull: Hageman, D. – PersonEntity: Name: NameFull: Morrow, H. – PersonEntity: Name: NameFull: Mei, F. – PersonEntity: Name: NameFull: Watson, T. IsPartOfRelationships: – BibEntity: Dates: – D: 16 M: 09 Text: Sep2017 Type: published Y: 2017 Identifiers: – Type: issn-print Value: 2169897X Numbering: – Type: volume Value: 122 – Type: issue Value: 17 Titles: – TitleFull: Journal of Geophysical Research. Atmospheres Type: main |
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