Mostrar el registro sencillo del ítem Mott, R. Scipión, Danny Schneebeli, M. Dawes, N. Berne, A. Lehning, M. 2018-09-12T13:19:18Z 2018-09-12T13:19:18Z 2014-01-07
dc.identifier.citation Mott, R., Scipión, D., Schneebeli, M., Dawes, N., Berne, A., & Lehning, M. (2014). Orographic effects on snow deposition patterns in mountainous terrain.==$Journal of Geophysical Research: Atmospheres, 119$==(3), 1419-1439. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract Orographic lifting of air masses and other topographically modified flows induce cloud and precipitation formation at larger scales and preferential deposition of precipitation at smaller scales. In this study, we examine orographic effects on small‐scale snowfall patterns in Alpine terrain. A polarimetric X‐band radar was deployed in the area of Davos (Switzerland) to determine the spatial variability of precipitation. In order to relate measured precipitation fields to flow dynamics, we model flow fields with the atmospheric prediction model “Advanced Regional Prediction System.” Additionally, we compare radar reflectivity fields with snow accumulation at the surface as modeled by Alpine3D. We investigate the small‐scale precipitation dynamics for one heavy snowfall event in March 2011 at a high resolution of 75 m. The analysis of the vertical and horizontal distribution of radar reflectivity at horizontal polarization and differential reflectivity shows polarimetric signatures of orographic snowfall enhancement near the summit region. Increasing radar reflectivity at horizontal polarization over the windward slopes toward the crest and downwind decreasing reflectivity over the leeward slopes is observed. The temporal variation of the location of maximum concentration of snow particles is partly attributed to the effect of preferential deposition of snowfall: For situations with strong horizontal winds, the concentration maximum is shifted from the ridge crest toward the leeward slopes. Qualitatively, we discuss the relative role of cloud microphysics such as the seeder‐feeder mechanism versus atmospheric particle transport in generating the observed snow deposition at the ground. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:2169-897X
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri es_ES
dc.subject Snowfall es_ES
dc.subject Dual‐polarized radar es_ES
dc.subject Seeder‐feeder mechanism es_ES
dc.subject Orographic precipitation es_ES
dc.subject Flow field es_ES
dc.title Orographic effects on snow deposition patterns in mountainous terrain es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Journal of Geophysical Research: Atmospheres es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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