High-resolution dust modelling over complex terrains in West Asia
Visualitza/Obre
10.1016/j.aeolia.2016.09.005
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/100064
Tipus de documentArticle
Data publicació2016-12
EditorElsevier
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 4.0 Internacional
Abstract
The present work demonstrates the impact of model resolution in dust propagation in a complex terrain region such as West Asia. For this purpose, two simulations using the NMMB/BSC-Dust model are performed and analysed, one with a high horizontal resolution (at 0.03° × 0.03°) and one with a lower horizontal resolution (at 0.33° × 0.33°). Both model experiments cover two intense dust storms that occurred on 17–20 March 2012 as a consequence of strong northwesterly Shamal winds that spanned over thousands of kilometres in West Asia. The comparison with ground-based (surface weather stations and sunphotometers) and satellite aerosol observations (Aqua/MODIS and MSG/SEVIRI) shows that despite differences in the magnitude of the simulated dust concentrations, the model is able to reproduce these two dust outbreaks. Differences between both simulations on the dust spread rise on regional dust transport areas in south-western Saudi Arabia, Yemen and Oman. The complex orography in south-western Saudi Arabia, Yemen and Oman (with peaks higher than 3000 m) has an impact on the transported dust concentration fields over mountain regions. Differences between both model configurations are mainly associated to the channelization of the dust flow through valleys and the differences in the modelled altitude of the mountains that alters the meteorology and blocks the dust fronts limiting the dust transport. These results demonstrate how the dust prediction in the vicinity of complex terrains improves using high-horizontal resolution simulations.
CitacióBasart, Sara; Vendrell, Lluis; Baldasano, Jose M. High-resolution dust modelling over complex terrains in West Asia. "Aeolian Research", Desembre 2016, vol. 23, p. 37-50.
ISSN1875-9637
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S1875963716301409?np=y
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
High-resolution dust modelling over complex.pdf | 1,819Mb | Visualitza/Obre |