A review on the research of modern aeolian dust in Central Asia

Shen, Huajun; Abuduwaili, Jilili; Samat, Alim; Ma, Lingling

doi:10.1007/s12517-016-2646-9

Cited by 48 publications

(14 citation statements)

References 82 publications

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“…There is a variety of deserts in Central Asia with different characteristics. Most of these dust sources are active between March and October (Shen et al, 2016;Indoitu et al, 2012). According to our simulations, a dust storm occurred in Central Asia in the end of September.…”

Section: Mineral Dustmentioning

confidence: 78%

What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?

Zwaaftink

Aas

Eckhardt

et al. 2021

Preprint

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Abstract. Early October 2020, northern Europe experienced an episode with poor air quality due to high concentrations of particulate matter (PM). At several sites in Norway, maximum recorded values for weekly averaged PM10 concentrations from the past 4 to 10 years were exceeded. Daily mean PM10 values at Norwegian sites were up to 97 μg m−3 and had a median value of 59 μg m−3. We analysed this severe pollution episode caused by long-range atmospheric transport based on on-line and off-line surface and remote sensing observations and transport model simulations to understand its causes. Samples from three sites in mainland Norway and the Arctic remote station Zeppelin (Svalbard) showed strong contributions from mineral dust to PM10 (23–36 % as a minimum and 31–45 % as a maximum) and biomass burning (8–16 % – 19–21 %). Atmospheric transport simulations indicate that Central Asia was the main source region for mineral dust observed in this episode. The biomass burning fraction can be attributed to forest fires in Ukraine and southern Russia, but we cannot exclude other sources contributing as well. The combined use of remote sensing, high quality measurements and transport modelling proved effective in describing the episode and distinguishing its causes.

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Section: Mineral Dustmentioning

confidence: 78%

What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?

Zwaaftink

Aas

Eckhardt

et al. 2021

Preprint

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“…The area has great potential for agricultural development because of the permanent river flows that contribute to the area's fertility. The observed seasonal dust events indicate that southwestern Iran is strongly affected by annual dust events from the large deserts in Iraq, Saudi Arabia, and Syria, especially during the hot season, e.g., [46][47][48]. Thus, southwestern Iran is recognized as a global hotspot of eolian dust.…”

Section: Study Areamentioning

confidence: 99%

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

2021

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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.

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“…With an increase in lake water salinity, pollutants and salt deposit onto the lake bottom, and are swept away in frequent dust storms when dried out. Harmful chemicals such as pesticides and heavy metals thus disperse, posing a serious health hazard to residents in the local area and areas traversed by the chemical dust storms [9,12,13]. The most widely reported health effects in the area of the Aral Sea include anemia, cancer, respiratory diseases and birth defects.…”

Section: Introductionmentioning

confidence: 99%

Historical Change and Ecological Risk of Potentially Toxic Elements in the Lake Sediments from North Aral Sea, Central Asia

Liu

Abuduwaili

2020

Applied Sciences

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The Aral Sea has received worldwide attention for the deterioration of its biological and chemical status. The accumulation of potentially toxic elements (PTEs) in the lake sediments reflects changes in the surrounding watershed and represents a potential hazard for the lake ecosystem. In conjunction with existing environmental records from the Aral Sea basin, sedimentary records of PTEs in North Aral Sea covering a short time scale, anno Domini (AD) 1950–2018, were used to reveal historical changes in PTE concentrations and potential risks to lake functioning. The results suggested that the levels of PTEs in lake sediments from North Aral Sea changed abruptly around 1970 AD, which is concurrent with the intensification of human activities within the basin. After 1970 AD, with the exception of As, which remained at unpolluted-to-moderately polluted levels, the geo-accumulation indices of the remaining PTEs studied (V, Cr, Zn, Co, Pb, Ni, Cu and Cd) inferred a moderately polluted status. Before 1970 AD, the total ecological risk was low, but since 1970, the total ecological risk index has exceeded 150, indicating moderate risk. Historical changes in PTE levels of lake sediments from North Aral Sea and their potential ecological risks are reported for the first time. The conclusions provide an important reference for the protection of lake ecosystems and will provide data for regional/global comparisons of environmental change during the Anthropocene.

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A review on the research of modern aeolian dust in Central Asia

Cited by 48 publications

References 82 publications

What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?

What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?

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

Historical Change and Ecological Risk of Potentially Toxic Elements in the Lake Sediments from North Aral Sea, Central Asia

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A review on the research of modern aeolian dust in Central Asia

Cited by 48 publications

References 82 publications

What caused a record high PM&lt;sub&gt;10&lt;/sub&gt; episode in northern Europe in October 2020?

What caused a record high PM&lt;sub&gt;10&lt;/sub&gt; episode in northern Europe in October 2020?

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

Historical Change and Ecological Risk of Potentially Toxic Elements in the Lake Sediments from North Aral Sea, Central Asia

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What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?

What caused a record high PM<sub>10</sub> episode in northern Europe in October 2020?