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Investigating the vertical extent and short-wave radiative effects of the ice phase in Arctic summertime low-level clouds

Järvinen, Emma ORCID iD icon 1; Nehlert, Franziska 2; Xu, Guanglang 2; Waitz, Fritz 1; Mioche, Guillaume; Dupuy, Regis; Jourdan, Olivier; Schnaiter, Martin ORCID iD icon 1
1 Institut für Meteorologie und Klimaforschung Atmosphärische Aerosolforschung (IMKAAF), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)


Low-level (cloud tops below 2 km) mixed-phase clouds are important in amplifying warming in the Arctic region through positive feedback in cloud fraction, water content and phase. In order to understand the cloud feedbacks in the Arctic region, good knowledge of the vertical distribution of the cloud water content, particle size and phase is required. Here we investigate the vertical extent of the cloud-phase and ice-phase optical properties in six case studies measured in the European Arctic during the ACLOUD campaign. Late spring- and summertime stratiform clouds were sampled in situ over pack ice, marginal sea ice zone and open-ocean surface, with cloud top temperatures varying between −15 and −1.5 ∘C. The results show that, although the liquid phase dominates the upper parts of the clouds, the ice phase was frequently observed in the lower parts down to cloud top temperatures as warm as −3.8 ∘C. In the studied vertical cloud profiles, the maximum of average liquid phase microphysical properties, droplet number concentration, effective radius and liquid water content, varied between 23 and 152 cm−3, 19 and 26 µm, 0.09 and 0.63 g m−3, respectively. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000161574
Veröffentlicht am 22.08.2023
DOI: 10.5194/acp-23-7611-2023
Zitationen: 4
Web of Science
Zitationen: 3
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung Atmosphärische Aerosolforschung (IMKAAF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1680-7324
KITopen-ID: 1000161574
HGF-Programm 12.11.26 (POF IV, LK 01) Aerosol-Cloud-Climate-Interaction
Erschienen in Atmospheric Chemistry and Physics
Verlag European Geosciences Union (EGU)
Band 23
Heft 13
Seiten 7611–7633
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.07.2023
Nachgewiesen in Web of Science
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