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A study on the effects of soil moisture, air humidity, and air temperature on wind speed threshold for dust emissions in the Taklimakan Desert

Author

Listed:
  • Xinghua Yang

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

  • Chenglong Zhou

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

  • Wen Huo

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

  • Fan Yang

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

  • Xinchun Liu

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

  • Ali Mamtimin

    (Institute of Desert Meteorology/Taklimakan Desert Meteorology Field Experiment Station, China Meteorological Administration)

Abstract

Soil and the atmospheric conditions are important factors that affect wind speed threshold of surface dust emissions. Based on the observed data of surface dust emissions in the Taklimakan Desert collected from March 2008 to February 2018, the effects of soil moisture, air humidity (vapor pressure), and air temperature on wind speed threshold were analyzed in this study. The results showed that the accumulated time of dust emissions over the decade was 3609.8 h, thereby accounting for 4.1% of the total observation time. In addition, the duration of dust emission in the four seasons were consistent with the pattern of summer > spring > autumn > winter. When the soil moisture is above 3.0–4.0%, the wind speed threshold for dust emission increases with increasing soil moisture. When the vapor pressure is above 10–15 kPa, the wind speed threshold for dust emission increases with increasing vapor pressure. There was a negative correlation between air temperature and the wind speed threshold for dust emission. When the air temperature was higher than 0.0 °C, the soil moisture decreased with increasing air temperature, and the wind speed threshold for dust emission was lower.

Suggested Citation

  • Xinghua Yang & Chenglong Zhou & Wen Huo & Fan Yang & Xinchun Liu & Ali Mamtimin, 2019. "A study on the effects of soil moisture, air humidity, and air temperature on wind speed threshold for dust emissions in the Taklimakan Desert," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(3), pages 1069-1081, July.
    • Handle: RePEc:spr:nathaz:v:97:y:2019:i:3:d:10.1007_s11069-019-03686-1
    DOI: 10.1007/s11069-019-03686-1
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    References listed on IDEAS

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    1. Xinghua Yang & Qing He & Xinchun Liu & Fan Yang & Wen Huo & Shuanghe Shen & Ali Mamtimin, 2018. "Saltation activity and its threshold velocity in the Gurbantunggut Desert, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 90(1), pages 349-364, January.
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    Cited by:

    1. Wang, Jing & Xue, Lianqing & Xiang, Chenguang & Li, Xinghan & Xie, Lei, 2023. "Improving ecological indicators of arid zone deserts through simulation," Ecological Modelling, Elsevier, vol. 485(C).

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