Overview: Fusion of radar polarimetry and numerical atmospheric modelling towards an improved understanding of cloud and precipitation processes

S Trömel, C Simmer, U Blahak, A Blanke… - Atmospheric …, 2021 - acp.copernicus.org
Cloud and precipitation processes are still the main source of uncertainties in numerical
weather prediction and climate change projections. The Priority Program" Polarimetric …

PAMTRA 1.0: the Passive and Active Microwave radiative TRAnsfer tool for simulating radiometer and radar measurements of the cloudy atmosphere

M Mech, M Maahn, S Kneifel, D Ori… - Geoscientific Model …, 2020 - gmd.copernicus.org
Forward models are a key tool to generate synthetic observations given knowledge of the
atmospheric state. In this way, they are an integral part of inversion algorithms that aim to …

Long-term statistics of riming in nonconvective clouds derived from ground-based Doppler cloud radar observations

S Kneifel, D Moisseev - Journal of the Atmospheric Sciences, 2020 - journals.ametsoc.org
Riming is an efficient process of converting liquid cloud water into ice and plays an important
role in the formation of precipitation in cold clouds. Due to the rapid increase in ice particle …

[HTML][HTML] Ice microphysical processes in the dendritic growth layer: a statistical analysis combining multi-frequency and polarimetric Doppler cloud radar observations

L Von Terzi, J Dias Neto, D Ori… - Atmospheric …, 2022 - acp.copernicus.org
The dendritic growth layer (DGL), defined as the temperature region between-20 and-10∘
C, plays an important role for ice depositional growth, aggregation and potentially secondary …

Two layers of melting ice particles within a single radar bright band: Interpretation and implications

H Li, D Moisseev - Geophysical Research Letters, 2020 - Wiley Online Library
Dual‐frequency dual‐polarization radar observations of the melting of two ice populations in
a stratiform rainfall event are presented. The observed phenomenon occurs as a two‐layer …

[HTML][HTML] The importance of particle size distribution and internal structure for triple-frequency radar retrievals of the morphology of snow

SL Mason, RJ Hogan, CD Westbrook… - Atmospheric …, 2019 - amt.copernicus.org
The accurate representation of ice particles is essential for both remotely sensed estimates
of clouds and precipitation and numerical models of the atmosphere. As it is typical in radar …

Ice aggregation in low‐level mixed‐phase clouds at a high Arctic site: Enhanced by dendritic growth and absent close to the melting level

G Chellini, R Gierens, S Kneifel - Journal of Geophysical …, 2022 - Wiley Online Library
Low‐level mixed‐phase clouds (MPCs) occur extensively in the Arctic, and are known to
play a key role for the energy budget. While their characteristic structure is nowadays well …

Evaluation of ice particle growth in ICON using statistics of multi‐frequency Doppler cloud radar observations

D Ori, V Schemann, M Karrer… - Quarterly Journal of …, 2020 - Wiley Online Library
Vertically pointing radar observations combining multiple frequencies and Doppler
measurements have been recently shown to contain valuable information about ice particle …

[HTML][HTML] Linking rain into ice microphysics across the melting layer in stratiform rain: A closure study

K Mróz, A Battaglia, S Kneifel, L von Terzi… - Atmospheric …, 2021 - amt.copernicus.org
This study investigates the link between rain and ice microphysics across the melting layer
in stratiform rain systems using measurements from vertically pointing multi-frequency …

[HTML][HTML] Using artificial neural networks to predict riming from Doppler cloud radar observations

T Vogl, M Maahn, S Kneifel, W Schimmel… - Atmospheric …, 2022 - amt.copernicus.org
Riming, ie, the accretion and freezing of supercooled liquid water (SLW) on ice particles in
mixed-phase clouds, is an important pathway for precipitation formation. Detecting and …