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Testing the Drop-Size Distribution Based Separation of Stratiform and Convective Rain Using Radar and Disdrometer Data from a Midlatitude Coastal Region
| Content Provider | MDPI |
|---|---|
| Author | Thurai, Merhala Bringi, Viswanathan Wolff, David Marks, David Pabla, Charanjit |
| Copyright Year | 2020 |
| Description | Stratiform and convective rain are associated with different microphysical processes and generally produce drop-size distributions (DSDs) with different characteristics. A previous study, using data from a tropical coastal location found that the two rain types could be separated in the $N_{W}–D_{m}$ space, where $D_{m}$ is the mass-weighted mean diameter and $N_{W}$ is the normalized intercept parameter. The separation method has also been tested using data and observations from a midlatitude continental location with semiarid climate, and a subtropical continental location. In this paper, we investigate the same separation technique using data and observations from a midlatitude coastal region. Three-minute DSDs from disdrometer measurements were used for the $N_{W}$ versus $D_{m}$ based classification and were compared with simultaneous observations from an S-band polarimetric radar 38 km away from the disdrometer site. Specifically, range-height indicator (RHI) scans over the disdrometer were used for confirmation. The results showed that there was no need to modify the separation criteria from previous studies. Scattering calculations using the three-minute DSDs were used to derive retrieval equations for $N_{w}$ and $D_{m}$ for the S-band radar and applied to the RHI scans to identify convective and stratiform rain regions. Two events are shown as illustrative examples. |
| Starting Page | 13 |
| e-ISSN | 26734931 |
| DOI | 10.3390/ecas2020-08125 |
| Journal | Environmental Sciences Proceedings |
| Issue Number | 1 |
| Volume Number | 4 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-11-13 |
| Access Restriction | Open |
| Subject Keyword | Environmental Sciences Proceedings Marine Engineering Stratiform Rain Convective Rain Raindrop-size Distributions Polarimetric Radar Retrievals |
| Content Type | Text |
