TR32-Database: Database of Transregio 32

[712] - Polarimetric estimates of a one month accumulation of light rain with a 3-cm wavelength radar

All available metadata of the dataset are listed below. Some features are available, e.g. download of dataset or additional description file.

Features
Citation
Borowska, L., Zrnic, D., Ryzhkov, A., Zhang, P., Simmer, C., 2011. Polarimetric estimates of a one month accumulation of light rain with a 3-cm wavelength radar. Journal of Hydrometeorology, 12, 1024 - 1039. DOI: 10.1175/2011JHM1339.1.
Identification
Title(s):Main Title: Polarimetric estimates of a one month accumulation of light rain with a 3-cm wavelength radar
Description(s):Abstract: The authors evaluate rainfall estimates from the new polarimetric X-band radar at Bonn, Germany, for a period between mid-November and the end of December 2009 by comparison with rain gauges. The emphasis is on slightly more than 1-month accumulations over areas minimally affected by beam blockage. The rain regime was characterized by reflectivities mainly below 45 dBZ, maximum observed rain rates of 47 mm h21, a mean rain rate of 0.1 mm h21, and brightband altitudes between 0.6 and 2.4 km above the ground. Both the reflectivity factor and the specific differential phase are used to obtain the rain rates. The accuracy of rain total estimates is evaluated from the statistics of the differences between radar and rain gauge measurements. Polarimetry provides improvement in the statistics of reflectivity-based measurements by reducing the bias and RMS errors from 225% to 7% and from 33% to 17%, respectively. Essential to this improvement is separation of the data into those attributed to pure rain, those from the bright band, and those due to nonmeteorological scatterers. A type-specific (rain or wet snow) relation is applied to obtain the rain rate by matching on the average the contribution by wet snow to the radar-measured rainfall below the bright band. The measurement of rain using specific differential phase is the most robust and can be applied to the very low rain rates and still produce credible accumulation estimates characterized with a standard deviation of 11% but a bias of 225%. A composite estimator is also tested and discussed.
Identifier(s):DOI: 10.1175/2011JHM1339.1
Responsible Party
Creator(s):Author: Lesya Borowska
Author: Dusan Zrnic
Author: Alexander Ryzhkov
Author: Pengfei Zhang
Author: Clemens Simmer
Publisher:American Meteorological Society
Topic
TR32 Topic:Atmosphere
Subject(s):CRC/TR32 Keywords: Meteorology, Remote Sensing, Radar/X-Band, Rainfall Data
File Details
File Name:2011_Borowska_JoHM.pdf
Data Type:Text
Size(s):16 Pages
File Size:1516 kB (1.48 MB)
Date(s):Date Submitted: 2011-01-09
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:51.5915435
East:7.4236328
South:50.2058789
West:5.2263672
Measurement Region:RurCatchment
Measurement Location:--RurCatchment--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2011
Type:Article
Article Type:Journal
Source:Journal of Hydrometeorology
Volume:12
Number Of Pages:16
Page Range:1024 - 1039
Metadata Details
Metadata Creator:Lesya Borowska
Metadata Created:2013-12-03
Metadata Last Updated:2013-12-03
Subproject:D5
Funding Phase:2
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:158
Metadata Downloads:0
Dataset Downloads:2
Dataset Activity
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