Publication Abstracts

Mroz et al. 2024, accepted

Mroz, K., A. Battaglia, and A.M. Fridlind, 2024: Enhancing consistency of microphysical properties of precipitation across the melting layer in the Dual-frequency Precipitation Radar data. Atmos. Meas. Tech., accepted.

Stratiform rain and the overlying ice play crucial roles in the 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 space-borne 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 significant 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 Dm (mean mass-weighted particle melted-equivalent diameter) and 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

@unpublished{mr07000h,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={Atmos. Meas. Tech.},
}

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RIS Citation

TY  - INPR
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.
ER  -

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