DOI: 10.1029/2012gl053007. Impacts of chemical reactivity on ice nucleation of kaolinite particles: A case study of levoglucosan and sulfuric acid

Impacts of chemical reactivity on ice nucleation of kaolinite particles: A case study of levoglucosan and sulfuric acid

10.1029/2012gl053007

Crossref journal-article

American Geophysical Union (AGU)

Geophysical Research Letters (13)

Abstract

Changes in the ice nucleation properties of mineral dust particles due to soluble coatings are still not well understood. Here we show that the reactivity with soluble materials deposited on the surfaces of kaolinite particles is an important factor affecting the ice nucleation properties of the particles. Using kaolinite particles treated with levoglucosan or H2SO4(i.e., non‐reactive and reactive materials, respectively), we investigated the fraction of particles capable of nucleating ice at temperatures ranging from −34°C to −26°C. Below water saturation, both the levoglucosan and H2SO4 coatings similarly reduced the ice nucleating ability of kaolinite particles. Above water saturation, however, only the H2SO4coatings reduced the ice nucleating ability of the particles, particularly at warmer temperatures. We suggest that the absence or presence of surface chemical reactions plays an important role in determining the number concentrations of ice crystals formed from mineral dust ice nuclei under mixed‐phase cloud conditions.

Bibliography

Tobo, Y., DeMott, P. J., Raddatz, M., Niedermeier, D., Hartmann, S., Kreidenweis, S. M., Stratmann, F., & Wex, H. (2012). Impacts of chemical reactivity on ice nucleation of kaolinite particles: A case study of levoglucosan and sulfuric acid. Geophysical Research Letters, 39(19). Portico.

Authors 8

Yutaka Tobo (first)
Paul J. DeMott (additional)
Michael Raddatz (additional)
Dennis Niedermeier (additional)
Susan Hartmann (additional)
Sonia M. Kreidenweis (additional)
Frank Stratmann (additional)
Heike Wex (additional)

References 25 Referenced 45

Dates

Type	When
Created	12 years, 11 months ago (Sept. 17, 2012, 1:19 p.m.)
Deposited	1 year, 9 months ago (Oct. 30, 2023, 1:31 a.m.)
Indexed	3 weeks, 5 days ago (July 30, 2025, 6:30 a.m.)
Issued	12 years, 10 months ago (Oct. 9, 2012)
Published	12 years, 10 months ago (Oct. 9, 2012)
Published Online	12 years, 10 months ago (Oct. 9, 2012)
Published Print	12 years, 10 months ago (Oct. 16, 2012)

Funders 1

National Science Foundation
Awards1
1. ATM-0841602

BibTeX

@article{Tobo_2012, title={Impacts of chemical reactivity on ice nucleation of kaolinite particles: A case study of levoglucosan and sulfuric acid}, volume={39}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/2012gl053007}, DOI={10.1029/2012gl053007}, number={19}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Tobo, Yutaka and DeMott, Paul J. and Raddatz, Michael and Niedermeier, Dennis and Hartmann, Susan and Kreidenweis, Sonia M. and Stratmann, Frank and Wex, Heike}, year={2012}, month=oct }

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