Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3402/tellusb.v68.29751 |
Modelling of a strong dust event in the complex terrain of the Dead Sea valley during the passage of a gust front | |
Kishcha, Pavel1; Rieger, Daniel2; Metzger, Jutta2; Starobinets, Boris1; Bangert, Max2; Vogel, Heike2; Schaettler, Ulrich3; Corsmeier, Ulrich2; Alpert, Pinhas1; Vogel, Bernhard2 | |
通讯作者 | Kishcha, Pavel |
来源期刊 | TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY |
ISSN | 1600-0889 |
出版年 | 2016 |
卷号 | 68 |
英文摘要 | The area of the Dead Sea valley and the adjacent regions are often affected by mineral dust. This study focuses on an extreme dust episode occurring on 22 March 2013, where near-surface dust concentrations of up to 7000 mu gm(-3) were encountered in the Dead Sea region. This episode is of great interest as it was accompanied by high wind speeds and a gust front that rapidly passed the Judean Mountains. Wind was even accelerated on the lee side of the Judean Mountains leading to a severe downslope wind. We simulated this situation with the comprehensive online-coupled weather forecast model COSMO-ART. Fair agreement was found between the simulated meteorological variables and the observations. The model was capable of producing a reasonable spatiotemporal distribution of near-surface dust concentration, consistent with available measurements in this area. With respect to the time of the maximum near-surface dust concentration in the Dead Sea valley, the model captured it almost perfectly compared to the observed total suspended particle (TSP) concentrations. COSMO-ART showed that the high near-surface dust concentration in the Dead Sea valley was mainly determined by local emissions. These emissions were caused by strong winds on the lee side of the Judean Mts. The model showed that an ascending airflow in the Dead Sea valley lifted dust particles, originating mainly from the upwind side of the Judean Mts., up to approximately 7 km. These dust particles contributed to the pronounced maximum in modelled dust aerosol optical depth (AOD) over the valley. Here we highlight the important point that the simulated maximum dust AOD was reached in the eastern part of the Dead Sea valley, while the maximum near-surface dust concentration was reached in the western part of the valley. |
英文关键词 | mineral dust Dead Sea valley complex terrain regional modelling dust aerosol optical depth |
类型 | Article |
语种 | 英语 |
国家 | Israel ; Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000370195700001 |
WOS关键词 | SAHARAN DUST ; MEDITERRANEAN REGION ; WIND EROSION ; DESERT DUST ; AEROSOL ; TRANSPORT ; PREDICTION ; ATMOSPHERE ; SYSTEM ; EMISSION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196640 |
作者单位 | 1.Tel Aviv Univ, Dept Geosci, IL-69978 Tel Aviv, Israel; 2.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, D-76021 Karlsruhe, Germany; 3.Deutsch Wetterdienst DWD, Offenbach, Germany |
推荐引用方式 GB/T 7714 | Kishcha, Pavel,Rieger, Daniel,Metzger, Jutta,et al. Modelling of a strong dust event in the complex terrain of the Dead Sea valley during the passage of a gust front[J],2016,68. |
APA | Kishcha, Pavel.,Rieger, Daniel.,Metzger, Jutta.,Starobinets, Boris.,Bangert, Max.,...&Vogel, Bernhard.(2016).Modelling of a strong dust event in the complex terrain of the Dead Sea valley during the passage of a gust front.TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,68. |
MLA | Kishcha, Pavel,et al."Modelling of a strong dust event in the complex terrain of the Dead Sea valley during the passage of a gust front".TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY 68(2016). |
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