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Multiple Radar Data Merging In Hydro-NEXRAD
Authors
Piotr Domaszczynski
Witold F. Krajewski
+4 more
Anton Kruger
Bong Chul Seo
James A. Smith
Gabriele Villarini
Publication date
1 December 2008
Publisher
Scholars\u27 Mine
Doi
Cite
Abstract
The Hydro-NEXRAD merging algorithms include two options: (1) data-based merging; and (2) product-based merging. Data-based merging algorithm takes volume scan reflectivity data from all radars involved through preprocessing algorithm that performs volume data quality control, interpolates data to synchronize temporal scale between individual radars, and finally combines data onto a common geographic grid. Reflectivity values for a given location are assigned by a weighting function with respect to the distance from the radar. This single reflectivity field is then converted to rainfall amounts using a user-requested standard approach. In product-based merging algorithm reflectivity data from multiple radars are all converted to rainfall using the same, user-specified algorithm. These products are then combined into the final one using a weighting function that expresses the uncertainty of estimated rainfall amounts. © 2008 ASCE
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Missouri University of Science and Technology (Missouri S&T): Scholars' Mine
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Last time updated on 17/10/2023