Turbulent characteristics of saltation and uncertainty of saltation model parameters
Turbulent characteristics of saltation and uncertainty of saltation model parameters
复制标题
跃变的湍流特性及跃变模型参数的不确定性
DOI:
10.5194/acp-18-7595-2018
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发表时间:
2017-12
影响因子:
6.3
通讯作者:
Yaping Shao
中科院分区:
文献类型:
--
作者:
Dongwei Liu;Masahide Ishizuka;Masao Mikami;Yaping Shao
Abstract. It is widely recognised that saltation is a turbulent process, similar to other transport processes in the atmospheric boundary layer. Due to a lack of high-frequency observations, the statistic behaviour of saltation is so far not well understood. In this study, we use the data from the Japan–Australia Dust Experiment (JADE) to investigate the turbulent characteristics of saltation by analysing the probability density function, energy spectrum and intermittency of saltation fluxes. Threshold friction velocity, u*t, and saltation coefficient, c0, are two important parameters in saltation models often assumed to be deterministic. As saltation is turbulent in nature, we argue that it is more reasonable to consider them as parameters obeying certain probability distributions. We estimate these distributions using the JADE data. The factors contributing to the stochasticity of u*t and c0 are examined.
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影响因子:
2
作者:
D. Sherman;Bailiang Li;J. Ellis;C. Swann
通讯作者:
D. Sherman;Bailiang Li;J. Ellis;C. Swann
DOI:
10.1007/s005850050744
发表时间:
1999-01-01
期刊:
ANNALES GEOPHYSICAE-ATMOSPHERES HYDROSPHERES AND SPACE SCIENCES
影响因子:
--
作者:
Fécan, F;Marticorena, B;Bergametti, G
通讯作者:
Bergametti, G
影响因子:
56.9
作者:
ANDERSON, RS;HAFF, PK
通讯作者:
HAFF, PK
影响因子:
1.9
作者:
F. Fécan;B. Marticorena;G. Bergametti
通讯作者:
F. Fécan;B. Marticorena;G. Bergametti
影响因子:
4.4
作者:
Ishizuka, M.;Mikami, M.;McTainsh, G. H.
通讯作者:
McTainsh, G. H.