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

Koike, M., Saito, T., Tobo, Y., Ebell, K., Moteki, N., Ohata, S., Mori, T., Yoshida, A., Adachi, K., Baumgardner, D., Ong, C. R., Hashino, T. (2023): Temperature dependence of precipitating ice particle number concentrations of Arctic mixed-phase clouds observed by continuous ground-based measurements, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2147

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018673 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018673_2
Genre: Conference Paper

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 Creators:
Koike, Makoto1, Author
Saito, Temma1, Author
Tobo, Yutaka1, Author
Ebell, Kerstin1, Author
Moteki, Nobuhiro1, Author
Ohata, Sho1, Author
Mori, Tatsuhiro1, Author
Yoshida, Atsushi1, Author
Adachi, Kouji1, Author
Baumgardner, Darrel1, Author
Ong, Chia Rui1, Author
Hashino, Tempei1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: 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 (NINP), we adopted typical number concentrations observed at Mt. Zeppelin. Because NINP depends on temperature, we used the value corresponding to the cloud-top temperature. As a result, number concentration fluxes of precipitation particles (Fice) tended to increase with decreasing temperature below approximately -15°C and they agreed with FINP within one order of magnitude. On the other hand, at temperatures above -10°C, Fice was several orders of magnitude higher than FINP. In this paper, we discuss possible reasons for these temperature dependences of Fice.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-2147
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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