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dc.contributor.authorAnagnostou MN
dc.contributor.authorNikolopoulos EI
dc.contributor.authorKalogiros J
dc.contributor.authorAnagnostou EN
dc.contributor.authorMarra F
dc.contributor.authorMair E
dc.contributor.authorBertoldi G
dc.contributor.authorTappeiner U
dc.contributor.authorBorga M
dc.date.accessioned2018-10-11T15:09:19Z
dc.date.available2018-10-11T15:09:19Z
dc.date.issued2018
dc.identifier.issn2072-4292
dc.identifier.urihttp://dx.doi.org/10.3390/rs10081258
dc.identifier.urihttp://hdl.handle.net/10863/6478
dc.description.abstractIn mountain basins, the use of long-range operational weather radars is often associated with poor quantitative precipitation estimation due to a number of challenges posed by the complexity of terrain. As a result, the applicability of radar-based precipitation estimates for hydrological studies is often limited over areas that are in close proximity to the radar. This study evaluates the advantages of using X-band polarimetric (XPOL) radar as a means to fill the coverage gaps and improve complex terrain precipitation estimation and associated hydrological applications based on a field experiment conducted in an area of Northeast Italian Alps characterized by large elevation differences. The corresponding rainfall estimates from two operational C-band weather radar observations are compared to the XPOL rainfall estimates for a near-range (10–35 km) mountainous basin (64 km2). In situ rainfall observations from a dense rain gauge network and two disdrometers (a 2D-video and a Parsivel) are used for ground validation of the radar-rainfall estimates. Ten storm events over a period of two years are used to explore the differences between the locally deployed XPOL vs. longer-range operational radar-rainfall error statistics. Hourly aggregate rainfall estimates by XPOL, corrected for rain-path attenuation and vertical reflectivity profile, exhibited correlations between 0.70 and 0.99 against reference rainfall data and 21% mean relative error for rainfall rates above 0.2 mm h−1. The corresponding metrics from the operational radar-network rainfall products gave a strong underestimation (50–70%) and lower correlations (0.48–0.81). For the two highest flow-peak events, a hydrological model (Kinematic Local Excess Model) was forced with the different radar-rainfall estimations and in situ rain gauge precipitation data at hourly resolution, exhibiting close agreement between the XPOL and gauge-based driven runoff simulations, while the simulations obtained by the operational radar rainfall products resulted in a greatly underestimated runoff response.en_US
dc.language.isoenen_US
dc.rights© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.titleAdvancing Precipitation Estimation and Streamflow Simulations in Complex Terrain with X-Band Dual-Polarization Radar Observationsen_US
dc.typeArticleen_US
dc.date.updated2018-10-11T15:05:39Z
dc.language.isiEN-GB
dc.journal.titleRemote Sensing
dc.description.fulltextopenen_US


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