Temperature dependence of precipitating ice particle number concentrations of Arctic mixed-phase clouds observed by continuous ground-based measurements ...

• Main Authors: Koike, Makoto, Saito, Temma, Tobo, Yutaka, Ebell, Kerstin, Moteki, Nobuhiro, Ohata, Sho, Mori, Tatsuhiro, Yoshida, Atsushi, Adachi, Kouji, Baumgardner, Darrel, Ong, Chia Rui, Hashino, Tempei
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Arctic; Svalbard
• Online Access: https://dx.doi.org/10.57757/iugg23-2147; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018673

<!--!introduction!--> Arctic low level clouds are considered to play a significant role in the Arctic climate system. In this study, we examined a temperature dependence of precipitating ice particle number concentrations of Arctic mixed-phase clouds observed by continuous ground-based in situ measurements. Precipitating particles were measured using an optical disdrometer (MPS, DMT Inc.) at Mt. Zeppelin Observatory in Ny-Alesund (78.9N, 11.9E), Svalbard between years of 2016 and 2020. Based on ground-based cloud radar and lidar observations, we selected a single layer mixed-phase cloud whose cloud-top height was less than 2.5 km. For the ice nucleating particles number concentration (N INP ), we adopted typical number concentrations observed at Mt. Zeppelin. Because N INP depends on temperature, we used the value corresponding to the cloud-top temperature. As a result, number concentration fluxes of precipitation particles (F ice ) tended to increase with decreasing temperature below approximately ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...