Preprints
https://doi.org/10.5194/acp-2021-809
https://doi.org/10.5194/acp-2021-809

  29 Nov 2021

29 Nov 2021

Review status: this preprint is currently under review for the journal ACP.

LES study on turbulent dust deposition and its dependence on atmospheric boundary-layer stability

Xin Yin1, Cong Jiang1, Yaping Shao1, Ning Huang2, and Jie Zhang2 Xin Yin et al.
  • 1Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany
  • 2Key Laboratory of Mechanics on Disaster and Environment in Western China, Lanzhou University, Lanzhou, China

Abstract. It is increasingly recognized that atmospheric boundary-layer stability (ABLS) plays an important role in aeolian processes. While the effects of ABLS on dust emission have been documented in several studies, those on dust deposition are less well studied. By means of large-eddy simulation, we investigate how ABLS influences the probability distribution of surface shear stress and hence dust deposition. Statistical analysis of the model results reveals that the shear stress can be well approximated by using a Weibull distribution and the ABLS influences on dust deposition can be estimated by considering the shear stress fluctuations. The model-simulated dust depositions are compared with the predictions of a dust-deposition scheme and measurements, and the findings are then used to improve the dust-deposition scheme. This research represents a further step towards developing dust schemes that account for the stochastic nature of dust processes.

Xin Yin et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2021-809', Gilles Bergametti, 30 Nov 2021
  • RC2: 'Comment on acp-2021-809', Anonymous Referee #2, 07 Dec 2021

Xin Yin et al.

Data sets

WRF-LES-DustDepositionScheme Xin Yin https://github.com/YinXin2021/WRF-LES-DustDepositionScheme

Model code and software

WRF-LES-DustDepositionScheme Xin Yin https://github.com/YinXin2021/WRF-LES-DustDepositionScheme

Xin Yin et al.

Viewed

Total article views: 397 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
314 69 14 397 3 5
  • HTML: 314
  • PDF: 69
  • XML: 14
  • Total: 397
  • BibTeX: 3
  • EndNote: 5
Views and downloads (calculated since 29 Nov 2021)
Cumulative views and downloads (calculated since 29 Nov 2021)

Viewed (geographical distribution)

Total article views: 397 (including HTML, PDF, and XML) Thereof 397 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 19 Jan 2022
Download
Short summary
We developed an improved deposition scheme by carrying out a series of numerical experiments using the large eddy simulation model with consideration of the fluctuation of instantaneous wind shear. Through the analysis of the simulation results, it is found that the improved deposition scheme can predict more accurately than the conventional deposition scheme especially under weak wind conditions and strongly convective atmospheric conditions.
Altmetrics