Publication result detail

Temperature and Concentration Affect Particle Size Upon Sublimation of Saline Ice: Implications for Sea Salt Aerosol Production in Polar Regions

ZÁVACKÁ, K.; NEDĚLA, V.; OLBERT, M.; TIHLAŘÍKOVÁ, E.; VETRÁKOVÁ, Ľ.; YANG, X.; HEGER, D.

Original Title

Temperature and Concentration Affect Particle Size Upon Sublimation of Saline Ice: Implications for Sea Salt Aerosol Production in Polar Regions

English Title

Temperature and Concentration Affect Particle Size Upon Sublimation of Saline Ice: Implications for Sea Salt Aerosol Production in Polar Regions

Type

WoS Article

Original Abstract

Using an environmental scanning electron microscope, we quantified for the first time aerosol-sized salt particles formed during the sublimation of sea ice as a function of temperature and concentration. The sublimation temperature of the ice is a dominating physical factor to determine the size of the residua: Below -20 degrees C, micron-sized pieces of salt emerge, whereas above the temperature large chunks of salt are detected. Another such aspect influencing the distribution of sizes in salt particles is the concentration: Micron-sized particles are observed exclusively at salinities below 3.5 psu, while below 0.085 psu particles with a median smaller than 6 mu m arise from sea ices at any subzero temperature. Moreover, when a chunk of salt sublimes at less than -30 degrees C to be dried and warmed later, a large number of sub-micron crystals will appear. We relate our findings to the production of the polar atmospheric sea salt aerosols.

English abstract

Using an environmental scanning electron microscope, we quantified for the first time aerosol-sized salt particles formed during the sublimation of sea ice as a function of temperature and concentration. The sublimation temperature of the ice is a dominating physical factor to determine the size of the residua: Below -20 degrees C, micron-sized pieces of salt emerge, whereas above the temperature large chunks of salt are detected. Another such aspect influencing the distribution of sizes in salt particles is the concentration: Micron-sized particles are observed exclusively at salinities below 3.5 psu, while below 0.085 psu particles with a median smaller than 6 mu m arise from sea ices at any subzero temperature. Moreover, when a chunk of salt sublimes at less than -30 degrees C to be dried and warmed later, a large number of sub-micron crystals will appear. We relate our findings to the production of the polar atmospheric sea salt aerosols.

Keywords

sea salt aerosols; ozone depletion; sublimation; microscopy; eutectic temperature; bromine explosion

Key words in English

sea salt aerosols; ozone depletion; sublimation; microscopy; eutectic temperature; bromine explosion

Authors

ZÁVACKÁ, K.; NEDĚLA, V.; OLBERT, M.; TIHLAŘÍKOVÁ, E.; VETRÁKOVÁ, Ľ.; YANG, X.; HEGER, D.

Released

28.04.2022

Publisher

AMER GEOPHYSICAL UNION

Location

WASHINGTON

ISBN

0094-8276

Periodical

GEOPHYSICAL RESEARCH LETTERS

Volume

49

Number

8

State

United States of America

Pages from

1

Pages to

10

Pages count

10

URL

https://doi.org/10.1029/2021GL097098

BibTex

@article{BUT178375,
  author="Kamila {Závacká} and Vilém {Neděla} and Martin {Olbert} and Eva {Tihlaříková} and Ľubica {Vetráková} and Xin {Yang} and Dominik {Heger}",
  title="Temperature and Concentration Affect Particle Size Upon Sublimation of Saline Ice: Implications for Sea Salt Aerosol Production in Polar Regions",
  journal="GEOPHYSICAL RESEARCH LETTERS",
  year="2022",
  volume="49",
  number="8",
  pages="1--10",
  doi="10.1029/2021GL097098",
  issn="0094-8276",
  url="https://doi.org/10.1029/2021GL097098"
}