Detection and characterization of the melting layer based on polarimetric radar scans

dc.contributor.authorWolfensberger, Daniel
dc.contributor.authorScipión, Danny
dc.contributor.authorBerne, Alexis
dc.date.accessioned2018-07-24T14:21:21Z
dc.date.available2018-07-24T14:21:21Z
dc.date.issued2015-09-22
dc.description.abstractStratiform rain situations are generally associated with the presence of a melting layer characterized by a strong signature in polarimetric radar variables. This layer is an important feature as it indicates the transition from solid to liquid precipitation. The melting layer remains poorly characterized, particularly from a polarimetric radar point of view. In this work a new algorithm to automatically detect the melting layer on polarimetric RHI radar scans using gradients of reflectivity and copolar correlation is first proposed. The algorithm was applied to Xband polarimetric radar data and validated by comparing the height of the detected layer with freezing levels heights obtained from radiosoundings and was shown to give both small errors and bias. The algorithm was then used on a large selection of precipitation events (more than 4000 RHI scans) from different seasons and climatic regions (South of France, Swiss Alps and plateau and Iowa-USA) to characterize the geometric and polarimetric signatures of the melting layer. The melting layer is shown to have a very similar geometry on average, independently of the topography and climatic conditions. Variations in the thickness of the melting layer during and between precipitation events was shown to be strongly related to the presence of rimed particles, to the vertical velocity of hydrometeors and to the intensity of the bright band.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationWolfensberger, D., Scipión, D., & Berne, A. (2015). Detection and characterization of the melting layer based on polarimetric radar scans.==$Quaterly Journal of the Royal Meteorological Society, 142$==(S1), 108-124. https://doi.org/10.1002/qj.2672es_ES
dc.identifier.doihttps://doi.org/10.1002/qj.2672es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalQuarterly Journal of the Royal Meteorological Societyes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2058
dc.language.isoenges_ES
dc.publisherWileyes_ES
dc.relation.ispartofurn:issn:0035-9009
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectMelting layeres_ES
dc.subjectPrecipitationes_ES
dc.subjectPolarimetric radares_ES
dc.subjectStratiformes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleDetection and characterization of the melting layer based on polarimetric radar scanses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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