Saltation Activity on Non-Dust Days in the Taklimakan Desert, China
Dust aerosols persistently affect nearly all landscapes worldwide, and the saltation activity caused by dusty weather (e.g., dust days) releases considerable amounts of aerosol into the atmosphere. Nevertheless, dust-induced saltation activity may also occur on non-dust days. To date, few studies ha...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/9/2099 |
| _version_ | 1797503077040783360 |
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| author | Xinghua Yang Chenglong Zhou Fan Yang Lu Meng Wen Huo Ali Mamtimin Qing He |
| author_facet | Xinghua Yang Chenglong Zhou Fan Yang Lu Meng Wen Huo Ali Mamtimin Qing He |
| author_sort | Xinghua Yang |
| collection | DOAJ |
| description | Dust aerosols persistently affect nearly all landscapes worldwide, and the saltation activity caused by dusty weather (e.g., dust days) releases considerable amounts of aerosol into the atmosphere. Nevertheless, dust-induced saltation activity may also occur on non-dust days. To date, few studies have investigated the saltation activity characteristics on non-dust days. Moreover, the contribution of non-dust days to the total saltation activity remains ambiguous. This study comprehensively investigates the characteristics of saltation activity on non-dust days. Specifically, we analyze the influence of the saltation activity of non-dust days on dust aerosols by utilizing saltation, atmospheric, soil, dust aerosol (i.e., PM<sub>10</sub> and aerosol optical depth), and weather record data obtained from the Taklimakan Desert, China, between 2008 and 2010. Our results show that lower temperature, vapor pressure, and soil moisture on non-dust days reduces the saltation threshold velocity (5.9 m/s) more compared to on dust days (6.5 m/s). Furthermore, regarding wind speed, relatively strong monthly saltation activity occurs from March to August, and daily saltation activity occurs from 9:00 to 16:00. Although non-dust days only contribute 18.5% and 7.7% to saltation time and saltation count, respectively, both significantly influence the dust aerosols. Therefore, the effect of saltation activity on non-dust days cannot be undervalued, particularly while performing dust aerosol studies. |
| first_indexed | 2024-03-10T03:45:21Z |
| format | Article |
| id | doaj.art-dec6afdcf2d140a585b20098ed0822f7 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T03:45:21Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-dec6afdcf2d140a585b20098ed0822f72023-11-23T09:10:32ZengMDPI AGRemote Sensing2072-42922022-04-01149209910.3390/rs14092099Saltation Activity on Non-Dust Days in the Taklimakan Desert, ChinaXinghua Yang0Chenglong Zhou1Fan Yang2Lu Meng3Wen Huo4Ali Mamtimin5Qing He6College of Geographical Sciences, Shanxi Normal University, Taiyuan 030032, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaNational Observation and Research Station of Desert Meteorology, Taklimakan Desert of Xinjiang, Urumqi 830002, ChinaDust aerosols persistently affect nearly all landscapes worldwide, and the saltation activity caused by dusty weather (e.g., dust days) releases considerable amounts of aerosol into the atmosphere. Nevertheless, dust-induced saltation activity may also occur on non-dust days. To date, few studies have investigated the saltation activity characteristics on non-dust days. Moreover, the contribution of non-dust days to the total saltation activity remains ambiguous. This study comprehensively investigates the characteristics of saltation activity on non-dust days. Specifically, we analyze the influence of the saltation activity of non-dust days on dust aerosols by utilizing saltation, atmospheric, soil, dust aerosol (i.e., PM<sub>10</sub> and aerosol optical depth), and weather record data obtained from the Taklimakan Desert, China, between 2008 and 2010. Our results show that lower temperature, vapor pressure, and soil moisture on non-dust days reduces the saltation threshold velocity (5.9 m/s) more compared to on dust days (6.5 m/s). Furthermore, regarding wind speed, relatively strong monthly saltation activity occurs from March to August, and daily saltation activity occurs from 9:00 to 16:00. Although non-dust days only contribute 18.5% and 7.7% to saltation time and saltation count, respectively, both significantly influence the dust aerosols. Therefore, the effect of saltation activity on non-dust days cannot be undervalued, particularly while performing dust aerosol studies.https://www.mdpi.com/2072-4292/14/9/2099saltation activitythreshold velocitydust aerosolsnon-dust daysTaklimakan Desert |
| spellingShingle | Xinghua Yang Chenglong Zhou Fan Yang Lu Meng Wen Huo Ali Mamtimin Qing He Saltation Activity on Non-Dust Days in the Taklimakan Desert, China Remote Sensing saltation activity threshold velocity dust aerosols non-dust days Taklimakan Desert |
| title | Saltation Activity on Non-Dust Days in the Taklimakan Desert, China |
| title_full | Saltation Activity on Non-Dust Days in the Taklimakan Desert, China |
| title_fullStr | Saltation Activity on Non-Dust Days in the Taklimakan Desert, China |
| title_full_unstemmed | Saltation Activity on Non-Dust Days in the Taklimakan Desert, China |
| title_short | Saltation Activity on Non-Dust Days in the Taklimakan Desert, China |
| title_sort | saltation activity on non dust days in the taklimakan desert china |
| topic | saltation activity threshold velocity dust aerosols non-dust days Taklimakan Desert |
| url | https://www.mdpi.com/2072-4292/14/9/2099 |
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