Journal article
Deployment and Performance Analyses of High-Resolution Iowa XPOL Radar System during the NASA IFloodS Campaign
Journal of hydrometeorology, Vol.17(2), pp.455-479
02/01/2016
DOI: 10.1175/JHM-D-15-0029.1
Abstract
Abstract This article presents the data collected and analyzed using the University of Iowa’s X-band polarimetric (XPOL) radars that were part of the spring 2013 hydrology-oriented Iowa Flood Studies (IFloodS) field campaign, sponsored by NASA’s Global Precipitation Measurement (GPM) Ground Validation (GV) program. The four mobile radars have full scanning capabilities that provide quantitative estimation of the rainfall at high temporal and spatial resolutions over experimental watersheds. IFloodS was the first extensive test of the XPOL radars, and the XPOL radars demonstrated their field worthiness during this campaign with 46 days of nearly uninterrupted, remotely monitored, and controlled operations. This paper presents detailed postcampaign analyses of the high-resolution, research-quality data that the XPOL radars collected. The XPOL dual-polarimetric products and rainfall are compared with data from other instruments for selected diverse meteorological events at high spatiotemporal resolutions from unprecedentedly unique and vast data generated during IFloodS operations. The XPOL data exhibit a detailed, complex structure of precipitation viewed at multiple range resolutions (75 and 30 m). The inter-XPOL comparisons within an overlapping scanned domain demonstrate consistency across different XPOL units. The XPOLs employed a series of heterogeneous scans and obtained estimates of the meteorological echoes up to a range oversampling of 7.5 m. A finer-resolution (30 m) algorithm is described to correct the polarimetric estimates for attenuation at the X band and obtain agreement of attenuation-corrected products with disdrometers and NASA S-band polarimetric (NPOL) radar. The paper includes hardware characterization of Iowa XPOL radars conducted prior to the deployment in IFloodS following the GPM calibration protocol.
Details
- Title: Subtitle
- Deployment and Performance Analyses of High-Resolution Iowa XPOL Radar System during the NASA IFloodS Campaign
- Creators
- Kumar Vijay Mishra - University of IowaWitold F Krajewski - University of IowaRadoslaw Goska - University of IowaDaniel Ceynar - University of IowaBong-Chul Seo - University of IowaAnton Kruger - University of IowaJames J Niemeier - University of IowaMiguel B Galvez - Colorado State UniversityMerhala Thurai - Colorado State UniversityV. N Bringi - Colorado State UniversityLeonid Tolstoy - Colorado State UniversityPaul A Kucera - NSF National Center for Atmospheric ResearchWalter A Petersen - Goddard Space Flight CenterJacopo Grazioli - École Polytechnique Fédérale de LausanneAndrew L Pazmany - ProSensing (United States)
- Resource Type
- Journal article
- Publication Details
- Journal of hydrometeorology, Vol.17(2), pp.455-479
- DOI
- 10.1175/JHM-D-15-0029.1
- ISSN
- 1525-755X
- eISSN
- 1525-7541
- Language
- English
- Date published
- 02/01/2016
- Academic Unit
- Electrical and Computer Engineering; Civil and Environmental Engineering; IIHR--Hydroscience and Engineering
- Record Identifier
- 9984197104802771
Metrics
52 Record Views