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Dataset associated with ‘The role of phase-separation and related topography in the exceptional ice-nucleating ability of alkali feldspars’
Citation
Whale, Thomas F. and Holden, Mark and Kulak, Alexander N. and Kim, Yi-Yeoun and Meldrum, Fiona C. and Christenson, Hugo K. and Murray, Benjamin J. (2017) Dataset associated with ‘The role of phase-separation and related topography in the exceptional ice-nucleating ability of alkali feldspars’. University of Leeds. [Dataset] https://doi.org/10.5518/256
Dataset description
Our understanding of crystal nucleation is a limiting factor in many fields, not least in the atmospheric sciences. It was recently found that feldspar, a component of airborne desert dust, plays a dominant role in triggering ice formation in clouds, but the origin of this effect was unclear. By investigating the structure/property relationships of a wide range of feldspars, we demonstrate that alkali feldspars with certain microtextures, related to phase separation into Na and K-rich regions, show exceptional icenucleating abilities in supercooled water. We found no correlation between ice-nucleating efficiency and the crystal structures or the chemical compositions of these active feldspars, which suggests that specific topographical features associated with these microtextures are key in the activity of these feldspars. That topography likely acts to promote ice nucleation, improves our understanding of ice formation in clouds, and may also enable the design and manufacture of bespoke nucleating materials for uses such as cloud seeding and cryopreservation.
| Subjects: | F000 - Physical sciences > F100 - Chemistry > F140 - Environmental chemistry F000 - Physical sciences > F300 - Physics > F330 - Environmental physics F000 - Physical sciences > F700 - Science of aquatic & terrestrial environments > F760 - Climatology |
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| Divisions: | Faculty of Engineering and Physical Sciences > School of Chemistry Faculty of Engineering and Physical Sciences > School of Physics and Astronomy Faculty of Environment > School of Earth and Environment Faculty of Environment > School of Earth and Environment > Institute for Climate and Atmospheric Science |
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| License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||
| Date deposited: | 11 Dec 2017 12:51 | ||||||
| URI: | https://archive.researchdata.leeds.ac.uk/id/eprint/288 | ||||||
Files
Data
43738_microcline.xlsx [10kB]  |
dark_shap_orthoclase.xlsx [9kB] |
eifel_sanidine_sample_1.xlsx [10kB] |
eifel_sanidine_sample_2.xlsx [9kB] |
kb14_microcline.xlsx [10kB] |
keystone_microcline.xlsx [11kB] |
larvikite_orthoclase.xlsx [9kB] |
ld2_sanidine.xlsx [9kB] |
ld4_microcline.xlsx [11kB] |
ld5_labradorite.xlsx [9kB] |
light_shap_orthoclase.xlsx [10kB] |
madagascar_orthoclase.xlsx [9kB] |
madagascar_sanidine.xlsx [9kB] |
perthite_microcline.xlsx [12kB] |
43738_microcline.xlsx [10kB] 
43738_microcline.xlsx [10kB]