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Unraveling ice multiplication in winter orographic clouds via in-situ observations, remote sensing and modeling

Earth Sciences

Unraveling ice multiplication in winter orographic clouds via in-situ observations, remote sensing and modeling

P. Georgakaki, A. Billault-roux, et al.

This study reveals the significant effects of secondary ice production (SIP) in orographic clouds, impacting hydrometeor distribution and precipitation patterns. Using a blend of in-situ observations and modeling, the authors demonstrate how SIP alters Doppler spectra, paving the way for new insights using global cloud radar data.

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Playback language: English
Abstract
This paper investigates secondary ice production (SIP) in orographic clouds using a combination of in-situ observations, remote sensing, and modeling. The study finds that SIP significantly impacts the vertical distribution of hydrometeors and precipitation, particularly in seeder-feeder cloud configurations. Mesoscale model simulations, coupled with a radar simulator, suggest that enhanced aggregation and SIP through ice-ice collisions contribute to observed spectral bimodalities in Doppler spectra, providing a potential method for inferring long-term SIP occurrences from global cloud radar data.
Publisher
npj Climate and Atmospheric Science
Published On
May 01, 2024
Authors
Paraskevi Georgakaki, Anne-Claire Billault-Roux, Romanos Foskinis, Kunjung Gao, Georgia Sotiropoulou, Maria Gini, Satoshi Takahama, Konstantinos Eleftheriadis, Alexandros Papayannis, Athanasios Nenes
Tags
secondary ice production
orographic clouds
hydrometeors
precipitation
Doppler spectra
remote sensing

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