When clouds raise an eyebrow – the case for a new supplementary cloud feature 'Supercilium'. (8th November 2022)

• Record Type: Journal Article
• Authors: Graham, Edward; Pretor‐Pinney, Gavin
• Is Part Of: Weather. Volume 77:Number 11(2022)
• Page Start: 383
• Page End: 385
• Publication Date: 2022-11-08
• Subjects: Meteorology -- Periodicals; Weather -- Great Britain -- Periodicals; 551.1
• DOI: 10.1002/wea.4322
• Languages: English
• ISSNs: 0043-1656

Abstract

Abstract : In 2017, the World Meteorological Organization accepted 12 revisions to the International Cloud Atlas, including the introduction of a new supplementary cloud feature, asperitas . Here, we present compelling photographic evidence gathered over recent years, which argues the case for an additional new cloud feature, ' supercilium ', to be also considered for inclusion in the Atlas, which at present lacks a precise category or description of these clouds. ' Supercilium ' are short‐lived cloud features, which appear in turbulent airflow over, and to the immediate lee of, steep mountain peaks during periods of strong mountain summit level winds.