Monitoring and simulation of a 7-day dust episode and associated dust radiative forcing over the Middle East via synergy of satellite observations, reanalysis datasets and regional/numerical models

被引：2

作者：

Mohammadpour, Kaveh ^{[1
]}

Hassan, Elham Mobarak ^{[2
]}

Kaskaoutis, Dimitris G. ^{[3
,4
]}

Rashki, Alireza ^{[5
]}

Hamzeh, Nasim Hossein ^{[6
]}

Rahimi, Setareh ^{[7
]}

机构：

[1] Univ Kurdistan, Fac Nat Resources, Dept Geomorphol, Sanandaj, Iran

[2] Islamic Azad Univ, Dept Environm, Ahvaz Branch, Ahvaz, Iran

[3] Univ Western Macedonia, Dept Chem Engn, Kozani 50100, Greece

[4] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 15236, Greece

[5] Ferdowsi Univ Mashhad, Fac Nat Resources & Environm, Dept Desert & Arid Zones Management, Mashhad, Iran

[6] Air & Climate Technol Co ACTC, Dept Meteorol, Tehran, Iran

[7] Univ Hormozgan, Fac Marine Sci & Technol, Dept Marine & Atmospher Sci Non Biol, Bandar Abbas, Iran

来源：

ATMOSPHERIC RESEARCH | 2025年 / 316卷

关键词：

Prolonged dust event; Radiative forcing; AOD; WRF-Chem; RegCM4; Middle East; AEROSOL OPTICAL DEPTH; INDIAN-SUMMER MONSOON; WRF-CHEM; REGIONAL CLIMATE; ARABIAN PENINSULA; DATA ASSIMILATION; NORTH-AFRICA; TEMPORAL VARIATIONS; MINERAL DUST; CENTRAL-ASIA;

D O I：

10.1016/j.atmosres.2025.107948

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

This work examines a persistent dust event over the Middle East (29 June - 5 July 2011), the vertical dust cross-sections and associated radiative effects, via the synergy of satellite observations, reanalyses and two regional high-resolution models (WRF-Chem and RegCM4). The model's evaluation showed a generally better performance of WRF-Chem in aerosol optical depth (AOD) simulations, but with notable biases against satellite and reanalysis data. The dust storm started from the Tigris-Euphrates plains, passed over Kuwait, and affected the Persian Gulf and east Saudi Arabia. The dust plumes were further escalated with dust emissions from the Rub-Al-Khali and Oman Deserts, while they mixed over the Arabian Sea with dusty air masses coming from southwest Asia. Shamal wind over the alluvial Iraqi plains and the Persian Gulf, combined with strong monsoon southwesterlies over the Arabian Sea and northern Levar wind over SW Asia facilitated dust emissions from various sources. In addition, dust outflow from East Africa to Arabia caused a surface shortwave (SW) radiation reduction of similar to 100-110 W m(- 2) in the southern Red Sea, Gulf of Aden and Oman shorelines. Over the northern Arabian Sea, south Red Sea and Gulf of Aden the net (SW + LW) surface radiative effect ranged from -60 to -80 W m(-2). A thick dust plume caused higher SW radiative effects over the southern Caspian Sea (-170 W m(-2)), with a net forcing of -140 W m(-2). The dust radiative cooling resulted in reduction in surface temperature (-1 degrees C to -2 degrees C) over the major dust-affected areas. Longwave (LW) radiative forcing (up to 50 W m(-2)) was simulated over the desert regions due to coarse dust. This study highlights notable differences in dust source functions, emission rates, and dust loading between the reanalysis, satellite datasets and model simulations, which may result in important biases in dust radiative effects.

引用

页数：23