DOI: 10.1016/j.atmosenv.2013.12.007
Scopus记录号: 2-s2.0-84891933481
论文题名: Effect of dead leaves on early spring dust emission in East Asia
作者: Kang J ; -Y ; , Tanaka T ; Y ; , Mikami M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 86 起始页码: 35
结束页码: 46
语种: 英语
英文关键词: Dead leaf
; Dust emission
; NDVI
; WRF-Chem
Scopus关键词: Dead leaf
; Dust emission
; NDVI
; Normalized difference vegetation index
; Threshold friction velocities
; Weather research and forecasting
; World meteorological organizations
; WRF-Chem
; Computer simulation
; Friction
; Meteorology
; Numerical models
; Vegetation
; Weather forecasting
; Dust
; biogenic emission
; dust
; dust storm
; growing season
; international organization
; leaf litter
; meteorology
; NDVI
; numerical model
; parameterization
; soil emission
; spring (season)
; vegetation cover
; wind erosion
; article
; Asia
; case study
; dead leaf
; dust
; plant leaf
; priority journal
; simulation
; spring
; vegetation
; wind erosion
; Far East
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Dead leaves remaining after the growing season can suppress dust emission by wind erosion, but this has not been considered in numerical models of dust emission. We investigated the effect of dead leaves by analyzing surface meteorological data and numerical simulations for early spring Asian dust events, and propose a parameterization of the dead-leaf effect. World Meteorological Organization (WMO) synoptic data indicate that high vegetation cover from the previous year can increase the threshold friction velocity for early spring of the following year. The reduction rate of dead leaves is calculated using 10-year averaged monthly vegetation cover data derived from the Normalized Difference Vegetation Index (NDVI), assuming that the amount of dead leaves decreases linearly, and the amount of dead leaves is included in calculating threshold friction velocity. To investigate the effect of dead leaves in simulations of Asian dust events, case studies were carried out with and without the dead-leaf effect for early spring Asian dust events using a Weather Research and Forecasting with Chemistry (WRF-Chem) model with a new dust emission scheme. Including the dead-leaf effect improved the model results, and the modeled surface concentrations are similar to the observed PM10 concentrations. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80743
Appears in Collections: 气候变化事实与影响
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作者单位: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan; Korea Institute of Atmospheric Prediction Systems, 4F., 35 Boramae-ro 5-gil, Dongjak-gu, Seoul 156-849, South Korea
Recommended Citation:
Kang J,-Y,, Tanaka T,et al. Effect of dead leaves on early spring dust emission in East Asia[J]. Atmospheric Environment,2014-01-01,86