Articles | Volume 14, issue 6
https://doi.org/10.5194/amt-14-4543-2021
https://doi.org/10.5194/amt-14-4543-2021
Research article
 | 
18 Jun 2021
Research article |  | 18 Jun 2021

Identification of snowfall microphysical processes from Eulerian vertical gradients of polarimetric radar variables

Noémie Planat, Josué Gehring, Étienne Vignon, and Alexis Berne

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This preprint is open for discussion and under review for Ocean Science (OS).
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Cited articles

Andrić, J., Kumjian, M. R., Zrnić, D. S., Straka, J. M., and Melnikov, V. M.: Polarimetric signatures above the melting layer in winter storms: An observational and modeling study, J. Appl. Meteorol. Clim., 52, 682–700, 2013. a, b, c
Bader, M., Clough, S., and Cox, G.: Aircraft and dual polarization radar observations of hydrometeors in light stratiform precipitation, Q. J. Roy. Meteor. Soc., 113, 491–515, 1987. a
Berne, A., Grazioli, J., and Genthon, C. Precipitation observations at the Dumont d'Urville station, Adelie Land, East Antarctica, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.883562, 2017. a
Besic, N., Figueras i Ventura, J., Grazioli, J., Gabella, M., Germann, U., and Berne, A.: Hydrometeor classification through statistical clustering of polarimetric radar measurements: a semi-supervised approach, Atmos. Meas. Tech., 9, 4425–4445, https://doi.org/10.5194/amt-9-4425-2016, 2016. a
Besic, N., Gehring, J., Praz, C., Figueras i Ventura, J., Grazioli, J., Gabella, M., Germann, U., and Berne, A.: Unraveling hydrometeor mixtures in polarimetric radar measurements, Atmos. Meas. Tech., 11, 4847–4866, https://doi.org/10.5194/amt-11-4847-2018, 2018. a, b, c
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We implement a new method to identify microphysical processes during cold precipitation events based on the sign of the vertical gradient of polarimetric radar variables. We analytically asses the meteorological conditions for this vertical analysis to hold, apply it on two study cases and successfully compare it with other methods informing about the microphysics. Finally, we are able to obtain the main vertical structure and characteristics of the different processes during these study cases.
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