Publication Abstracts
Mroz et al. 2024
Mroz, K., A. Battaglia, and , 2024: Enhancing consistency of microphysical properties of precipitation across the melting layer in the Dual-frequency Precipitation Radar data. Atmos. Meas. Tech., 17, no. 5, 1577-1597, doi:10.5194/amt-17-1577-2024.
Stratiform rain and the overlying ice play crucial roles in Earth's climate system. From a microphysics standpoint, water mass flux primarily depends on two variables: particles' concentration and their mass. The Dual-frequency Precipitation Radar (DPR) on the Global Precipitation Measurement mission core satellite is a spaceborne instrument capable of estimating these two quantities through dual-wavelength measurements. In this study, we evaluate bulk statistics on the ice particle properties derived from dual-wavelength radar data in relation to the properties of rain underneath. Specifically, we focus on DPR observations over stratiform precipitation, characterized by columns exhibiting a prominent bright band, where the melting layer can be easily detected.
Our analysis reveals a large increase in the retrieved mass flux as we transition from the ice to the rain phase in the official DPR product. This observation is in disagreement with our expectation that mass flux should remain relatively stable across the bright band in cold-rain conditions. To address these discrepancies, we propose an alternative retrieval algorithm that ensures a gradual transition of D2 (mean mass-weighted particle melted-equivalent diameter) and the precipitation rate across the melting zone. This approach also helps in estimating bulk ice density above the melting level. These findings demonstrate that DPR observations can not only quantify ice particle content and their size above stratiform rain regions but also estimate bulk density, provided uniform conditions that minimize uncertainties related to partial beam filling.
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BibTeX Citation
@article{mr07000h,
author={Mroz, K. and Battaglia, A. and Fridlind, A. M.},
title={Enhancing consistency of microphysical properties of precipitation across the melting layer in the Dual-frequency Precipitation Radar data},
year={2024},
journal={Atmospheric Measurement Techniques},
volume={17},
number={5},
pages={1577--1597},
doi={10.5194/amt-17-1577-2024},
}
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RIS Citation
TY - JOUR ID - mr07000h AU - Mroz, K. AU - Battaglia, A. AU - Fridlind, A. M. PY - 2024 TI - Enhancing consistency of microphysical properties of precipitation across the melting layer in the Dual-frequency Precipitation Radar data JA - Atmos. Meas. Tech. JO - Atmospheric Measurement Techniques VL - 17 IS - 5 SP - 1577 EP - 1597 DO - 10.5194/amt-17-1577-2024 ER -
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