干旱区生态环境知识资源中心(Arid): Stepwise Assessment of Different Saltation Theories in Comparison with Field Observation Data

Arid

DOI	10.3390/atmos11010010
	Stepwise Assessment of Different Saltation Theories in Comparison with Field Observation Data
	Lee, Haeju; Park, Sung Hoon
通讯作者	Park, Sung Hoon
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:1
英文摘要	Wind-blown dust models use input data, including soil conditions and meteorology, to interpret the multi-step wind erosion process and predict the quantity of dust emission. Therefore, the accuracy of the wind-blown dust models is dependent on the accuracy of each input condition and the robustness of the model schemes for each elemental step of wind erosion. A thorough evaluation of a wind-blown model thus requires validation of the input conditions and the elemental model schemes. However, most model evaluations and intercomparisons have focused on the final output of the models, i.e., the vertical dust emission. Recently, a delicate set of measurement data for saltation flux and friction velocity was reported from the Japan-Australia Dust Experiment (JADE) Project, which enabled the step-by-step evaluation of wind-blown dust models up to the saltation step. When all the input parameters were provided from the observations, both the two widely used saltation schemes showed very good agreement with measurements, with the correlation coefficient and the agreement of index both being larger than 0.9, which demonstrated the strong robustness of the physical schemes for saltation. However, using the meteorology model to estimate the input conditions such as weather and soil conditions, considerably degraded the models' performance. The critical reason for the model failure was determined to be the inaccuracy in the estimation of the threshold friction velocity (representing soil condition), followed by inaccurate estimation of surface wind speed. It was not possible to determine which of the two saltation schemes was superior, based on the present study results. Such differentiation will require further evaluation studies using more measurements of saltation flux and vertical dust emissions.
英文关键词	wind erosion saltation wind-blown dust model soil moisture drag partitioning
类型	Article
语种	英语
国家	South Korea
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000516826200010
WOS关键词	LAND-SURFACE MODEL ; THRESHOLD FRICTION VELOCITY ; DUST EMISSION MODEL ; DRAG PARTITION ; WIND EROSION ; APRIL 1998 ; SOIL ; TRANSPORT ; SIMULATION ; DESERT
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314116
作者单位	Sunchon Natl Univ, Dept Environm Engn, Sunchon 57922, South Korea
推荐引用方式 GB/T 7714	Lee, Haeju,Park, Sung Hoon. Stepwise Assessment of Different Saltation Theories in Comparison with Field Observation Data[J],2020,11(1).
APA	Lee, Haeju,&Park, Sung Hoon.(2020).Stepwise Assessment of Different Saltation Theories in Comparison with Field Observation Data.ATMOSPHERE,11(1).
MLA	Lee, Haeju,et al."Stepwise Assessment of Different Saltation Theories in Comparison with Field Observation Data".ATMOSPHERE 11.1(2020).