Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2020.105364 |
Summertime dust storms over the Arabian Peninsula and impacts on radiation, circulation, cloud development and rain | |
Diana Francis, Jean-Pierre Chaboureau, Narendra Nelli, Juan Cuesta, ... Lulin Xue | |
2020-11-12 | |
发表期刊 | Atmospheric Research |
出版年 | 2020 |
英文摘要 | This study investigates the underlying atmospheric dynamics associated with intense dust storms in summer 2018 over the Arabian Peninsula (AP); a major dust source at global scale. It reports, for the first time, on the formation of cyclone over the Empty Quarter Desert as important mechanism for intense dust storms over this source region. The dust direct and semi-direct radiative forcings are observed, for the first time over this source region, using high-resolution in-situ and CERES-SYN satellite observational data. The three-dimensional structure and evolution of the dust storms are inferred from state-of-the-art satellite products such as SEVIRI, AEROIASI and CALIPSO. The dynamics and thermodynamics of the boundary layer during this event are thoroughly analyzed using ERA5 reanalysis and ground based observations. We found that a large dust storm by Shamal winds led up, through radiative forcing, to cyclone development over the Empty Quarter Desert, subsequent dust emissions, development of convective clouds and rain. The cyclogenesis over this region initiated a second intense dust storm which developed and impacted the AP for 3 consecutive days. The uplifted dust by the cyclone reached 5 km in altitude and altered the radiative budget at the surface, inducing both significant warming during night and cooling during day. The dust load uplifted by the cyclone was estimated by the mesoscale model Meso-NH to be in the order of 20 Tg, and the associated aerosol optical depth was higher than 3. The model simulates reasonably the radiative impact of the dust in the shortwave but highly underestimated its impact in the LW. Our study stresses the importance of the dust radiative forcing in the longwave and that it should be accurately accounted for in models to properly represent the impact of dust on the Earth system especially near source areas. Missing the warming effect of dust aerosols would impact both the weather and air quality forecast, and the regional climate projections. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/303867 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Diana Francis, Jean-Pierre Chaboureau, Narendra Nelli, Juan Cuesta, ... Lulin Xue. Summertime dust storms over the Arabian Peninsula and impacts on radiation, circulation, cloud development and rain[J]. Atmospheric Research,2020. |
APA | Diana Francis, Jean-Pierre Chaboureau, Narendra Nelli, Juan Cuesta, ... Lulin Xue.(2020).Summertime dust storms over the Arabian Peninsula and impacts on radiation, circulation, cloud development and rain.Atmospheric Research. |
MLA | Diana Francis, Jean-Pierre Chaboureau, Narendra Nelli, Juan Cuesta, ... Lulin Xue."Summertime dust storms over the Arabian Peninsula and impacts on radiation, circulation, cloud development and rain".Atmospheric Research (2020). |
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