Investigations of backscatter differential phase in the melting layer
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| Title: | Main Title: Investigations of backscatter differential phase in the melting layer |
| Description: | Abstract: Backscatter differential phase δ within the melting layer has been identified as a reliably measurable but still under-utilized polarimetric variable. Polarimetric radar observations at X band in Germany and S band in the U.S.A. are presented, which show maximal observed δ of 8.5° at X band but up to 70° at S band. Dual-frequency observation at X and C band in Germany and dual-frequency observations at C and S band in the U.S. are compared in order to explore the regional frequency dependencies of the δ signature. Theoretical simulations based on usual assumptions about the microphysical composition of the melting layer can not reproduce the observed large values of δ at the lower frequency bands and also underestimate the enhancements in differential reflectivity ZDR and reductions in the cross-correlation coefficient ρhv. Simulations using a two-layer T-matrix code and a simple model for the representation of accretion can, however, explain the pronounced δ signatures at S and C bands in conjunction with small δ at X band. We conclude, that the δ signature bears information about microphysical accretion and aggregation processes in the melting layer and the degree of riming of the snowflakes aloft. |
| Identifier: | 10.1175/JAMC-D-14-0050.1 (DOI) |
| Citation Advice: | Troemel, S., Ryzhkov, A., Zhang, P., Simmer, C., 2014. Investigations of backscatter differential phase in the melting layer. Journal of Applied Meteorology and Climatology, 1 - 44. DOI: 10.1175/JAMC-D-14-0050.1. |
Responsible Party
| Creators: | Silke Trömel (Author), Alexander Ryzhkov (Author), Pengfei Zhang (Author), Clemens Simmer (Author) |
| Publisher: | American Meteorological Society |
| Publication Year: | 2014 |
Topic
| TR32 Topic: | Atmosphere |
| Related Subproject: | D5 |
| Subjects: | Keywords: Backscatter, Radar/X-Band, Atmosphere, Radar observations |
File Details
| Filename: | Troemel_et_al_2014_JAMC.pdf |
| Data Type: | Text - Article |
| Size: | 44 Pages |
| File Size: | 7.1 MB |
| Date: | Available: 18.08.2014 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
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| Download Permission: | Only Project Members |
| General Access and Use Conditions: | According to the TR32DB data policy agreement. |
| Access Limitations: | According to the TR32DB data policy agreement. |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Publication
| Publication Status: | Accepted |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Journal of Applied Meteorology and Climatology |
| Source Website: | http://journals.ametsoc.org |
| Number of Pages: | 44 (1 - 44) |
Metadata Details
| Metadata Creator: | Tanja Kramm |
| Metadata Created: | 11.09.2014 |
| Metadata Last Updated: | 11.09.2014 |
| Subproject: | D5 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Metadata Downloads: | 0 |
| Dataset Downloads: | 2 |
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