globalchange  > 影响、适应和脆弱性
DOI: 10.1088/1748-9326/11/11/114013
论文题名:
Climate, not conflict, explains extreme Middle East dust storm
作者: Anthony J Parolari; Dan Li; Elie Bou-Zeid; Gabriel G Katul; Shmuel Assouline
刊名: Environmental Research Letters
ISSN: 1748-9326
出版年: 2016
发表日期: 2016-11-08
卷: 11, 期:11
语种: 英语
英文摘要:

The recent dust storm in the Middle East (Sepember 2015) was publicized in the media as a sign of an impending 'Dust Bowl.' Its severity, demonstrated by extreme aerosol optical depth in the atmosphere in the 99th percentile compared to historical data, was attributed to the ongoing regional conflict. However, surface meteorological and remote sensing data, as well as regional climate model simulations, support an alternative hypothesis: the historically unprecedented aridity played a more prominent role, as evidenced by unusual climatic and meteorological conditions prior to and during the storm. Remotely sensed normalized difference vegetation index demonstrates that vegetation cover was high in 2015 relative to the prior drought and conflict periods, suggesting that agricultural activity was not diminished during that year, thus negating the media narrative. Instead, meteorological simulations using the Weather Research and Forecasting (WRF) model show that the storm was associated with a cyclone and 'Shamal' winds, typical for dust storm generation in this region, that were immediately followed by an unusual wind reversal at low levels that spread dust west to the Mediterranean Coast. These unusual meteorological conditions were aided by a significant reduction in the critical shear stress due to extreme dry and hot conditions, thereby enhancing dust availability for erosion during this storm. Concluding, unusual aridity, combined with unique synoptic weather patterns, enhanced dust emission and westward long-range transport across the region, thus generating the extreme storm.

URL: http://iopscience.iop.org/article/10.1088/1748-9326/11/11/114013
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13980
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA;Department of Earth and Environment, Boston University, Boston, MA 02215, USA;Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08544, USA;Nicholas School of the Environment, Duke University, Durham, NC 27708, USA;Department of Environmental Physics and Irrigation, Institute of Soil, Water and Environmental Sciences, A.R.O.-Volcani Center, Rishon LeTsion 7528809, Israel

Recommended Citation:
Anthony J Parolari,Dan Li,Elie Bou-Zeid,et al. Climate, not conflict, explains extreme Middle East dust storm[J]. Environmental Research Letters,2016-01-01,11(11)
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