Investigation of Aeolian Dust Deposition Rates in Different Climate Zones of Southwestern Iran

Abstract

Dust and atmospheric particles have been described in southwestern Iran primarily in terms of load, concentration and transport. The passive deposition, however, has been discussed inadequately. Therefore, the relationships between different climate zones in southwestern Iran and dust deposition rates were quantified between 2014 and 2017 using both space- (second modern-era retrospective analysis for research and applications, version 2 reanalysis model) and ground-based (eolian ground deposition rate) tools. In addition, the surface meteorological records, including the wind patterns favoring the occurrence of dust events, were examined. A hot desert climate (BWh), hot semi-arid climate (BSh), and temperate hot and dry summer climate (Csa) were identified as the three dominant climate regions in the study area, exhibiting the highest average dust deposition rates. In this study, correlations between the most relevant climate patterns and deposition rate weather parameters were found to describe a region’s deposition rate when a dust event occurred. Based on these results, the BSh and Csa regions were found to be associated with the seasonal cycle of dust events in March, April, and May, revealing that in the long run meteorological conditions were responsible for the varying dust deposition rates. Relatively, precipitation and temperature were the two major factors influencing dust deposition rates, not wind speed. Moreover, the peak seasonal deposition rates in the spring and summer were 8.40 t km−2 month−1, 6.06 t km−2 month−1, and 3.30 t km−2 month−1 for the BWh, BSh, and Csa climate regions, respectively. However, each of these climate types was directly related to the specific quantity of the dust deposition rates. Overall, the highest dust deposition rates were detected over the years studied were 100.80 t km−2 year−1, 79.27 t km−2 year−1, and 39.60 t km−2 year−1 for BWh, BSh, and Csa, respectively.

Improved salinity and dust stress tolerance in the desert halophyte Haloxylon aphyllum by halotolerant plant growth-promoting rhizobacteria

“…In addition, the EC of the springlet of pots was measured once a week to ensure the desired salinity level, and in case of excessive increment in the desired salinity level, leaching with water was carried out. Dust was applied at 1.5 g m −2 month −1 once a week for 5 months based on the results of Ahmadi Foroushani et al ( 2021 ). After pouring the dust into the valve of the dust simulator, the amount of dust (g m −2 ) was controlled using a trap with dimensions of 1.6 × 2.3 m 2 .…”

The importance of plant growth-promoting rhizobacteria to increase air pollution tolerance index (APTI) in the plants of green belt to control dust hazards

“…Dust treatments were applied by dust simulator (Dustinmizer Model 1212, https://www.amazon.com/Dustin-mizer-Model-1212-Includes-Deflector/dp/B002KIB680) 30 days after culturing these seedlings in the pots. The dust treatment was applied at 1.5 g m -2 30 days -1 once a week for 150 days according to a previous assay (Ahmadi Foroushani et al, 2021). After pouring the dust into the valve of the dust simulator, the content of dust (g m -2 ) was controlled by using a trap with dimensions of 1.6 × 2.3 m 2 .…”

Causes and Effects of Sand and Dust Storms: What Has Past Research Taught Us? A Survey

“…Moreover, the transpacific dust transport from Inner Asia and Northern China to North America up to Greenland (Shao et al 2011;Middleton 2017) and the sediment transport from Central Australia to the Australian east coast and New Zealand are well known (Aragnou et al 2021). Large amounts of dust are also transported within the dust belt from the Arabian Peninsula and Iraq to Iran (Foroushani et al 2021), from the Central Asian deserts to Iran and Afghanistan (Abassi et al 2019;Rashki et al 2021;Karami et al 2021), from Mongolia and Inner Mongolia (Gobi Desert) to Northern China (Gao 2010). These large continental and transcontinental dust transports follow the global atmospheric circulation patterns.…”