Dust Hotspot in the Gobi Desert: A Field Survey in April 2019

Dust Hotspot in the Gobi Desert: A Field Survey in April 2019

The Gobi Desert is a dominant source of dust on the Asian continent. In this study, we analysed the characteristics of a typical Mongolian dust storm and identified a prominent dust hotspot in the Gobi Desert. During a field survey from Ulaanbaatar (the capital of Mongolia) to Dalanzadgad in the Gob...

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Veröffentlicht in:SOLA 2021, Vol.17, pp.130-133
Hauptverfasser: Kai, Kenji, Kawai, Kei, Ito, Atsuya, Aizawa, Yuki, Minamoto, Yuki, Munkhjargal, Erdenebadrakh, Davaanyam, Enkhbaatar
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container_end_page 133
container_issue
container_start_page 130
container_title SOLA
container_volume 17
creator Kai, Kenji
Kawai, Kei
Ito, Atsuya
Aizawa, Yuki
Minamoto, Yuki
Munkhjargal, Erdenebadrakh
Davaanyam, Enkhbaatar
description The Gobi Desert is a dominant source of dust on the Asian continent. In this study, we analysed the characteristics of a typical Mongolian dust storm and identified a prominent dust hotspot in the Gobi Desert. During a field survey from Ulaanbaatar (the capital of Mongolia) to Dalanzadgad in the Gobi Desert, we encountered a typical dust storm on 28 April 2019, exhibiting a distinct dust wall. The head of the dust storm crossed the road several kilometres ahead of our vehicle. The head of the storm had a height of 600 m, and its structure suggested that the dust storm was induced by a gravity current. We entered the front of the dust storm and measured a maximum wind speed of 18.2 m/s and a visibility of less than 10 m. The normalized dust number concentration at 7 μm was 59 cm−3. Moreover, Himawari-8 Dust RGB imagery showed that the dust storm occurred in an orographic convergence zone. This zone connects two valleys that are sandwiched between three mountains in the Gobi Desert: the Khangai, Altai, and Gurvan Saikhan Mountains. Our results suggest that this zone is a remarkable dust hotspot in the Gobi Desert.
doi_str_mv 10.2151/sola.2021-023
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subjects Meteorology & Atmospheric Sciences
Physical Sciences
Science & Technology
title Dust Hotspot in the Gobi Desert: A Field Survey in April 2019
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