Articles | Volume 23, issue 17
https://doi.org/10.5194/acp-23-10207-2023
https://doi.org/10.5194/acp-23-10207-2023
Research article
 | 
14 Sep 2023
Research article |  | 14 Sep 2023

Distinct secondary ice production processes observed in radar Doppler spectra: insights from a case study

Anne-Claire Billault-Roux, Paraskevi Georgakaki, Josué Gehring, Louis Jaffeux, Alfons Schwarzenboeck, Pierre Coutris, Athanasios Nenes, and Alexis Berne

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Cited articles

Atlas, R. L., Bretherton, C. S., Blossey, P. N., Gettelman, A., Bardeen, C., Lin, P., and Ming, Y.: How Well Do Large-Eddy Simulations and Global Climate Models Represent Observed Boundary Layer Structures and Low Clouds Over the Summertime Southern Ocean?, J. Adv. Model. Earth Syst., 12, 1–25, https://doi.org/10.1029/2020MS002205, 2020. a
Aydin, K. and Tang, C.: Relationships between IWC and polarimetric radar measurands at 94 and 220 GHz for hexagonal columns and plates, J. Atmos. Ocean. Technol., 14, 1055–1063, https://doi.org/10.1175/1520-0426(1997)014<1055:RBIAPR>2.0.CO;2, 1997. a
Billault-Roux, A.-C. and Berne, A.: Integrated water vapor and liquid water path retrieval using a single-channel radiometer, Atmos. Meas. Tech., 14, 2749–2769, https://doi.org/10.5194/amt-14-2749-2021, 2021. a, b
Billault-Roux, A.-C., Ghiggi, G., Jaffeux, L., Martini, A., Viltard, N., and Berne, A.: Dual-frequency spectral radar retrieval of snowfall microphysics: a physics-driven deep-learning approach, Atmos. Meas. Tech., 16, 911–940, https://doi.org/10.5194/amt-16-911-2023, 2023a. a
Billault-Roux, A.-C., Grazioli, J., Delanoë, J., Jorquera, S., Pauwels, N., Viltard, N., Martini, A., Mariage, V., Le Gac, C., Caudoux, C., Aubry, C., Bertrand, F., Schwarzenboeck, A., Jaffeux, L., Coutris, P., Febvre, G., Pichon, J. M., Dezitter, F., Gehring, J., Untersee, A., Calas, C., Figueras i Ventura, J., Vie, B., Peyrat, A., Curat, V., Rebouissoux, S., and Berne, A.: ICE GENESIS: Synergetic Aircraft and Ground-Based Remote Sensing and In Situ Measurements of Snowfall Microphysical Properties, B. Am. Meteorol. Soc., 104, E367–E388, https://doi.org/10.1175/BAMS-D-21-0184.1, 2023b. a, b, c, d, e
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Short summary
Secondary ice production plays a key role in clouds and precipitation. In this study, we analyze radar measurements from a snowfall event in the Jura Mountains. Complex signatures are observed, which reveal that ice crystals were formed through various processes. An analysis of multi-sensor data suggests that distinct ice multiplication processes were taking place. Both the methods used and the insights gained through this case study contribute to a better understanding of snowfall microphysics.
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