DOI: 10.1002/2014MS000371
Scopus记录号: 2-s2.0-85027923905
论文题名: Isolating effects of terrain and soil moisture heterogeneity on the atmospheric boundary layer: Idealized simulations to diagnose land-atmosphere feedbacks
作者: Rihani J ; F ; , Chow F ; K ; , Maxwell R ; M
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 2 起始页码: 915
结束页码: 937
语种: 英语
英文关键词: Atmospheric thermodynamics
; Boundary layer flow
; Boundary layers
; Evaporation
; Groundwater
; Interfacial energy
; Landforms
; Moisture
; Soil moisture
; Soils
; Surface measurement
; Advanced regional prediction systems
; Convective boundary layers
; Land atmosphere interaction
; Land surface energy fluxes
; Planetary boundary layers
; Soil moisture distribution
; Soil moisture profiles
; Subsurface heterogeneity
; Atmospheric boundary layer
; atmospheric modeling
; boundary layer
; coupling
; energy flux
; evaporation
; heterogeneity
; land surface
; mesoscale meteorology
; prediction
; soil moisture
; terrain
; transition zone
; water depth
; water table
英文摘要: The effects of terrain, soil moisture heterogeneity, subsurface properties, and water table dynamics on the development and behavior of the atmospheric boundary layer are studied through a set of idealized numerical experiments. The mesoscale atmospheric model Advanced Regional Prediction System (ARPS) is used to isolate the effects of subsurface heterogeneity, terrain, and soil moisture initialization. The simulations are initialized with detailed soil moisture distributions obtained from offline spin-ups using a coupled surface-subsurface model (ParFlow-CLM). In these idealized simulations, we observe that terrain effects dominate the planetary boundary layer (PBL) development during early morning hours, while the soil moisture signature overcomes that of terrain during the afternoon. Water table and subsurface properties produce a similar effect as that of soil moisture as their signatures (reflected in soil moisture profiles, energy fluxes, and evaporation at the land surface) can also overcome that of terrain during afternoon hours. This is mostly clear for land surface energy fluxes and evaporation at the land surface. We also observe the coupling between water table depth and planetary boundary layer depth in our cases is strongest within wet-to-dry transition zones. This extends the findings of previous studies which demonstrate the subsurface connection to surface energy fluxes is strongest in such transition zones. We investigate how this connection extends into the atmosphere and can affect the structure and development of the convective boundary layer. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76029
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Civil and Environmental Engineering, University of California Berkeley, Berkeley, California, United States; Now at Meteorological Institute, University of Bonn, Bonn, Germany; Department of Geology and Geological Engineering and Integrated Groundwater Modeling Center, Colorado School of Mines, Golden, Colorado, United States
Recommended Citation:
Rihani J,F,, Chow F,et al. Isolating effects of terrain and soil moisture heterogeneity on the atmospheric boundary layer: Idealized simulations to diagnose land-atmosphere feedbacks[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(2)