Automating the analysis of hailstone layers
<p>The layered structures inside hailstones provide a direct indication of their shape and properties at various stages during growth. Given the myriad of different trajectories that can exist, and the sensitivity of rime deposit type to environmental conditions, it must be expected that many...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2023-02-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://amt.copernicus.org/articles/16/695/2023/amt-16-695-2023.pdf |
| Summary: | <p>The layered structures inside hailstones provide a direct indication of their shape and properties at various stages during growth. Given the myriad
of different trajectories that can exist, and the sensitivity of rime deposit type to environmental conditions, it must be expected that many
different perturbations of hailstone properties occur within a single hailstorm; however, some commonalities are likely in the shared early stages
of growth, for hailstones of similar size (especially those that grow along similar trajectories) and final growth near the melting level. It
remains challenging to extract this information from a large sample of hailstones because of the time required to prepare cross sections and
accurately measure individual layers. To reduce the labour and potential errors introduced by manual analysis of hailstones, an automated method for
measuring layers from cross section photographs is introduced and applied to a set of hailstones collected in Melbourne, Australia. This work is
motivated by new hail growth simulation tools that model the growth of layers within individual hailstones, for which accurate measurements of
observed hailstone cross sections can be applied as validation. A first look at this new type of evaluation for hail growth simulations is
demonstrated.</p> |
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| ISSN: | 1867-1381 1867-8548 |