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Hygroscopic behavior of sea spray aerosols in offshore waters and open sea areas investigated with aerosol optical tweezers.

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Title: Hygroscopic behavior of sea spray aerosols in offshore waters and open sea areas investigated with aerosol optical tweezers.
Authors: Qiu, Jie1 (AUTHOR), He, Bishuo1 (AUTHOR), Zhang, Lusong2 (AUTHOR), Cheng, Manqiu1 (AUTHOR), Guo, Shuqi1 (AUTHOR), Fan, Chengyi1 (AUTHOR), Zhao, Chunsheng1 (AUTHOR) zcs@pku.edu.cn
Source: Atmospheric Environment. Mar2024, Vol. 321, pN.PAG-N.PAG. 1p.
Subjects: Optical tweezers, Aerosols, Seawater, Sea salt, Optical measurements, Humidity
Abstract: Sea spray aerosols (SSA) play a crucial role as a primary aerosol source on a global scale, exerting significant influence on the Earth's radiative balance. Variations in sea water composition and concentrations across different regions can introduce disparities in sea spray aerosol properties. This study focuses on investigating and comparing the hygroscopicity of artificial sea salt particles and nascent sea spray aerosols from offshore waters and open sea areas within the Pacific Ocean. An aerosol optical tweezer (AOT) system is developed to measure the diameter hygroscopic growth factor (GF) and the hygroscopicity parameter (κ) of both artificial sea salt and natural sea spray aerosol particles. Our findings indicate that the hygroscopic properties of supermicron sea spray aerosols from offshore waters and open sea areas are remarkably similar and can be effectively represented by artificial sea salt particles. Furthermore, through the application of the theoretical Zdanovskii, Stokes, and Robinson (ZSR) mixing rule, the calculated κ values reinforce the validity of our aerosol optical tweezer measurements. Hence, we propose that, for modeling supermicron sea spray aerosol particles produced in either offshore waters or open sea areas, the properties of artificial sea salt particles, rather than NaCl particles, serve as robust proxies for natural sea spray aerosols. To be specific, we recommend utilizing a κ value of 1.20, for modeling sea spray aerosol properties at a relative humidity of 90% (RH = 90%). This empirically derived κ value, rooted in our study, can enhance the accuracy of climate models and contribute to a more precise understanding of aerosol-climate interactions. • Cutting-edge aerosol optical tweezers unveil supermicron sea spray aerosol hygroscopicity in offshore and open sea areas. • Artificial sea salt particle better mimics the hygroscopicity of supermicron sea spray aerosols than NaCl. • Recommend 1.20 as hygroscopicity parameter for supermicron sea spray aerosols, enhancing modeling. [ABSTRACT FROM AUTHOR]
Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science 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.)
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DbLabel: Engineering Source
An: 175239096
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  Label: Title
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  Data: Hygroscopic behavior of sea spray aerosols in offshore waters and open sea areas investigated with aerosol optical tweezers.
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  Data: <searchLink fieldCode="AR" term="%22Qiu%2C+Jie%22">Qiu, Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22He%2C+Bishuo%22">He, Bishuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Lusong%22">Zhang, Lusong</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Manqiu%22">Cheng, Manqiu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Shuqi%22">Guo, Shuqi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fan%2C+Chengyi%22">Fan, Chengyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Chunsheng%22">Zhao, Chunsheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zcs@pku.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Atmospheric+Environment%22">Atmospheric Environment</searchLink>. Mar2024, Vol. 321, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Optical+tweezers%22">Optical tweezers</searchLink><br /><searchLink fieldCode="DE" term="%22Aerosols%22">Aerosols</searchLink><br /><searchLink fieldCode="DE" term="%22Seawater%22">Seawater</searchLink><br /><searchLink fieldCode="DE" term="%22Sea+salt%22">Sea salt</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+measurements%22">Optical measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Humidity%22">Humidity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Sea spray aerosols (SSA) play a crucial role as a primary aerosol source on a global scale, exerting significant influence on the Earth's radiative balance. Variations in sea water composition and concentrations across different regions can introduce disparities in sea spray aerosol properties. This study focuses on investigating and comparing the hygroscopicity of artificial sea salt particles and nascent sea spray aerosols from offshore waters and open sea areas within the Pacific Ocean. An aerosol optical tweezer (AOT) system is developed to measure the diameter hygroscopic growth factor (GF) and the hygroscopicity parameter (κ) of both artificial sea salt and natural sea spray aerosol particles. Our findings indicate that the hygroscopic properties of supermicron sea spray aerosols from offshore waters and open sea areas are remarkably similar and can be effectively represented by artificial sea salt particles. Furthermore, through the application of the theoretical Zdanovskii, Stokes, and Robinson (ZSR) mixing rule, the calculated κ values reinforce the validity of our aerosol optical tweezer measurements. Hence, we propose that, for modeling supermicron sea spray aerosol particles produced in either offshore waters or open sea areas, the properties of artificial sea salt particles, rather than NaCl particles, serve as robust proxies for natural sea spray aerosols. To be specific, we recommend utilizing a κ value of 1.20, for modeling sea spray aerosol properties at a relative humidity of 90% (RH = 90%). This empirically derived κ value, rooted in our study, can enhance the accuracy of climate models and contribute to a more precise understanding of aerosol-climate interactions. • Cutting-edge aerosol optical tweezers unveil supermicron sea spray aerosol hygroscopicity in offshore and open sea areas. • Artificial sea salt particle better mimics the hygroscopicity of supermicron sea spray aerosols than NaCl. • Recommend 1.20 as hygroscopicity parameter for supermicron sea spray aerosols, enhancing modeling. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Atmospheric Environment is the property of Pergamon Press - An Imprint of Elsevier Science 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:
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      – Type: doi
        Value: 10.1016/j.atmosenv.2024.120360
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Optical tweezers
        Type: general
      – SubjectFull: Aerosols
        Type: general
      – SubjectFull: Seawater
        Type: general
      – SubjectFull: Sea salt
        Type: general
      – SubjectFull: Optical measurements
        Type: general
      – SubjectFull: Humidity
        Type: general
    Titles:
      – TitleFull: Hygroscopic behavior of sea spray aerosols in offshore waters and open sea areas investigated with aerosol optical tweezers.
        Type: main
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          Name:
            NameFull: Qiu, Jie
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            NameFull: He, Bishuo
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            NameFull: Zhang, Lusong
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            NameFull: Cheng, Manqiu
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            NameFull: Guo, Shuqi
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            NameFull: Fan, Chengyi
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            NameFull: Zhao, Chunsheng
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          Dates:
            – D: 05
              M: 03
              Text: Mar2024
              Type: published
              Y: 2024
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              Value: 321
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            – TitleFull: Atmospheric Environment
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