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Asperitas – a newly identified cloud supplementary feature

Harrison, R. G., Pretor-Pinney, G., Marlton, G. J., Anderson, D. G., Kirshbaum, D. J. and Hogan, R. J. (2017) Asperitas – a newly identified cloud supplementary feature. Weather, 72 (5). pp. 132-141. ISSN 0043-1656

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To link to this item DOI: 10.1002/wea.2996

Abstract/Summary

Cloud images obtained through a crowd-sourced international observing network suggest a cloud variety that has hitherto not been explicitly classified. This cloud feature shows a roughened base, which, under some solar illumination conditions, provides a particularly dramatic appearance. The growing body of photographic observations have led the World Meteorological Organisation to consider adding ‘asperitas’ to the 2017 edition of the International Cloud Atlas as a new form of supplementary cloud feature. We compare reported sightings with available meteorological data to investigate the conditions that give rise to this newly recognised cloud description.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical, Physical and Computational Sciences > Department of Meteorology
ID Code:69830
Publisher:Royal Meteorological Society

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