Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign
Visualitza/Obre
10.1016/j.atmosres.2021.105826
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/350594
Tipus de documentArticle
Data publicació2021-12-15
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Precipitations processes at windward and leeward sides of the mountains have been object of study for many decades. Instead, inner mountain valleys, where usually most mountain population lives, have received considerably less attention. This article examines precipitation processes during a winter field campaign in an inner valley of the Pyrenees (NE Spain) using, among other instruments, a K-band vertically pointing Doppler radar (Micro Rain Radar) and a laser-based optical disdrometer (Parsivel). A decoupling is found between the stalled air of the valley and the air of the free atmosphere above the mountain crest level, evidenced by an increase of turbulence and spectral width of precipitation particles. Wind shear layer may promote riming and aggregation of the ice and snow particles. Two main rainfall regimes are found during the campaign: (1) stratiform rainfall mostly produced by water vapour deposition processes, although sometimes riming and aggregation become important, and (2) weak convection with slight dominance of collision-coalescence processes. Precipitation characteristics at the bottom of the valley show typical continental features such as low Liquid Water Content, despite the valley is only about 100
CitacióGonzález, S. [et al.]. Vertical structure and microphysical observations of winter precipitation in an inner valley during the Cerdanya-2017 field campaign. "Atmospheric research", 15 Desembre 2021, vol. 254, article 105826.
ISSN0169-8095
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
1-s2.0-S0169809521003823-main.pdf | 4,747Mb | Visualitza/Obre |