Research Data Leeds Repository

Dataset associated with "Volcanic ash ice nucleation activity is variably reduced by aging in water and sulfuric acid: the effects of leaching, dissolution, and precipitation"

Fahy, William D. and Maters, Elena and Giese-Miranda, Rona and Adams, Michael P. and Jahn, Leif G. and Sullivan, Ryan C. and Murray, Benjamin J. (2021) Dataset associated with "Volcanic ash ice nucleation activity is variably reduced by aging in water and sulfuric acid: the effects of leaching, dissolution, and precipitation". University of Leeds. [Dataset] https://doi.org/10.5518/1079

Dataset description

Volcanic ash nucleates ice when immersed in supercooled water, giving it the potential to influence weather and climate from local to global scales. However, the ice nucleation activity (INA) of ash can be modified by interaction with various chemical species during atmospheric transport. In the experimental study associated with this dataset, we show that the INA of two mineralogically distinct ash samples from Fuego and Astroni volcanoes is variably reduced when immersed in water or aqueous sulfuric acid for minutes to days. Aging in water decreases the INA of both ash samples by up to two orders of magnitude, possibly due to a reduction in surface crystallinity and cation availability accompanying leaching. Aging in sulfuric acid leads to minimal loss of INA for Fuego ash, which is proposed to reflect a quasi-equilibrium between leaching that removes ice-active sites and dissolution that reveals or creates new ones on the pyroxene phases present. Conversely, exposure to sulfuric acid reduces the INA of Astroni ash by one to two orders of magnitude, potentially due to selective dissolution of ice-active sites associated with surface microtextures on some K-feldspar phases. Analysis of dissolved element concentrations in the aged ash leachates indicates supersaturation of select mineral species which might have precipitated and so also contributed to altering the INA of the ash. These results highlight the key role that leaching, dissolution, and precipitation likely play in the aqueous aging of volcanic ash with respect to its INA.

Keywords:	volcanic ash, ice nucleation, chemical aging, atmosphere
Subjects:	F000 - Physical sciences > F600 - Geology > F670 - Geochemistry F000 - Physical sciences > F300 - Physics > F330 - Environmental physics > F331 - Atmospheric physics F000 - Physical sciences > F600 - Geology > F680 - Geohazards > F682 - Vulcanology F000 - Physical sciences > F100 - Chemistry > F170 - Physical chemistry F000 - Physical sciences > F100 - Chemistry > F140 - Environmental chemistry
Divisions:	Faculty of Environment > School of Earth and Environment Faculty of Environment > School of Earth and Environment > Institute for Climate and Atmospheric Science
Related resources:	Location Type https://doi.org/10.1039/D1EA00071C Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	10 Jan 2022 08:21
URI:	http://archive.researchdata.leeds.ac.uk/id/eprint/915
Additional details Additional details Creators: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Fahy, William D. https://orcid.org/0000-0002-2822-4474 Carnegie Mellon University https://ror.org/05x2bcf33 ROR Maters, Elena https://orcid.org/0000-0003-1032-9865 University of Leeds https://ror.org/024mrxd33 ROR University of Cambridge https://ror.org/013meh722 ROR Giese-Miranda, Rona Technische Universität Bergakademie Freiberg https://ror.org/031vc2293 ROR Adams, Michael P. University of Leeds https://ror.org/024mrxd33 ROR Jahn, Leif G. Carnegie Mellon University https://ror.org/05x2bcf33 ROR Sullivan, Ryan C. https://orcid.org/0000-0003-0701-7158 Carnegie Mellon University https://ror.org/05x2bcf33 ROR Murray, Benjamin J. https://orcid.org/0000-0002-8198-8131 University of Leeds https://ror.org/024mrxd33 ROR Type of data: Dataset Research funders: European Commission (H2020-MSCA-IF), Leverhulme Trust, Isaac Newton Trust, Undergraduate Research Office, Carnegie Mellon University, Deutscher Akademischer Austauschdienst RISE Worldwide, National Science Foundation of the United States of America, Europ Grant numbers: 746695, CHM–1554941, 648661, NE/T00648X/1 Publication date: 2021 Resource language: English Research project title: INoVA, ISURF, CAREER, MarineIce, M-Phase Publisher: University of Leeds Contact Email Address: ecm63@cam.ac.uk Last Modified: 10 Jan 2022 23:35

Files

Documentation

Data files description [2kB] Data files description [2kB] Data files description [2kB] Visible to: Anyone File name: README.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 2kB

Data

Ice nucleation (IN) spectra [82kB] Ice nucleation (IN) spectra [82kB] Ice nucleation (IN) spectra [82kB] Visible to: Anyone File name: IN_spectra.zip Content type: Data Mime-Type: application/zip File size: 82kB

Ash leachate ICP measurements [108kB] Ash leachate ICP measurements [108kB] Ash leachate ICP measurements [108kB] Visible to: Anyone File name: ICP_Data_Leachates.xlsx Content type: Data Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 108kB

Calculated IN vectors with ICP data [4kB] Calculated IN vectors with ICP data [4kB] Calculated IN vectors with ICP data [4kB] Visible to: Anyone File name: Freeze_Vectors.csv Content type: Data Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 4kB

Calculated IN vectors with ICP data - divided [4kB] Calculated IN vectors with ICP data - divided [4kB] Calculated IN vectors with ICP data - divided [4kB] Visible to: Anyone File name: Freeze_Vectors_Divided.csv Content type: Data Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 4kB

Calculated IN vectors with ICP data - subtracted [4kB] Calculated IN vectors with ICP data - subtracted [4kB] Calculated IN vectors with ICP data - subtracted [4kB] Visible to: Anyone File name: Freeze_Vectors_Subtracted.csv Content type: Data Mime-Type: text/csv License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 4kB

Program

Code for Chebyshev polynomial interpolation of IN spectrum [1kB] Code for Chebyshev polynomial interpolation of IN spectrum [1kB] Code for Chebyshev polynomial interpolation of IN spectrum [1kB] Visible to: Anyone File name: Freeze_Vector_Differences.py Content type: Program File size: 1kB

Code for heatmaps and permutation importance plots [1MB] Code for heatmaps and permutation importance plots [1MB] Code for heatmaps and permutation importance plots [1MB] Visible to: Anyone File name: ICP_and_VAA_analysis.ipynb Content type: Program File size: 1MB