干旱区生态环境知识资源中心(Arid): Modeling dust emission in alpine regions with low air temperature and low air pressure - A case study on the Qinghai-Tibetan Plateau (QTP)

Arid

DOI	10.1016/j.geoderma.2022.115930
	Modeling dust emission in alpine regions with low air temperature and low air pressure - A case study on the Qinghai-Tibetan Plateau (QTP)
	Du, Heqiang; Xue, Xian; Wang, Tao; Lu, Shanlong; Liao, Jie; Li, Sen; Fan, Yawei; Liu, Xinlei
通讯作者	Du, HQ
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2022
卷号	422
英文摘要	Dust emission is one of the important segments of the circulation of materials between lithosphere, atmosphere, and ocean systems. However, studies on dust emission have mainly concentrated on arid and semiarid regions with few studies focused on dust emission in alpine areas, where having lower air temperatures and lower air pressure environments. The lower air temperature and lower air pressure could significantly impact the air density and make the entrainment and transport of dust different from those at lower altitudes. The lack of accurate studies on dust emission in alpine regions has resulted in large uncertainties in the global dust budget and brought large challenges in controlling aeolian hazards in alpine regions. To bridge this gap, we took the air density as an important parameter to simulate dust emission in the Qinghai-Tibetan Plateau (QTP), where has typical low air-temperature and low air-pressure environments. The measured data showed that the lower air temperature and low air pressure affect the particle size distributions (PSDs) of aeolian sediment, the threshold velocity (TFV) as well as the dust emission rate. Herein, we introduced air density as an important factor to improve a dust emission model, and the validated results showed that the deviations of the simulated horizontal sand flux and vertical dust flux were less than 30% and 35%, respectively. Using the improved model, we could exactly depict the spatial and temporal distribution of dust emission in the QTP. The results shown, our model could exactly depict the spatial and temporal distribution of dust emission in the QTP. We believe that the improvement of the model could offer a new perspective on dust emission in environments with lower air temperature and lower air pressure, and the simulated results could provide valuable data for global dust budget estimation.
英文关键词	Air density Dust emission Low air pressure Low air temperature Qinghai-Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000800305700001
WOS关键词	ORGANIC-CARBON ; SIZE DISTRIBUTION ; NORTHERN CHINA ; SOIL-MOISTURE ; WIND ; EROSION ; STORMS ; DESERTIFICATION ; SALTATION ; HUMIDITY
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392916
推荐引用方式 GB/T 7714	Du, Heqiang,Xue, Xian,Wang, Tao,et al. Modeling dust emission in alpine regions with low air temperature and low air pressure - A case study on the Qinghai-Tibetan Plateau (QTP)[J],2022,422.
APA	Du, Heqiang.,Xue, Xian.,Wang, Tao.,Lu, Shanlong.,Liao, Jie.,...&Liu, Xinlei.(2022).Modeling dust emission in alpine regions with low air temperature and low air pressure - A case study on the Qinghai-Tibetan Plateau (QTP).GEODERMA,422.
MLA	Du, Heqiang,et al."Modeling dust emission in alpine regions with low air temperature and low air pressure - A case study on the Qinghai-Tibetan Plateau (QTP)".GEODERMA 422(2022).