DOI: 10.1002/joc.5200
论文题名: Impact of temporal resolution of precipitation forcing data on modelled urban-atmosphere exchanges and surface conditions
作者: Ward H.C. ; Tan Y.S. ; Gabey A.M. ; Kotthaus S. ; Grimmond C.S.B.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 2 起始页码: 649
结束页码: 662
语种: 英语
英文关键词: cities
; energy balance
; evaporation
; rainfall
; runoff
; water balance
Scopus关键词: Energy balance
; Evaporation
; Flood control
; Floods
; Heat flux
; Irrigation
; Runoff
; Soil moisture
; Cities
; Highest resolutions
; Interception models
; Irrigation scheduling
; Spatial and temporal variability
; Surface conditions
; Temporal resolution
; Water balance
; Rain
; atmospheric dynamics
; atmospheric forcing
; energy balance
; energy flux
; evaporation
; precipitation (climatology)
; rainfall
; runoff
; urban area
; water budget
英文摘要: Representative precipitation data sets are very difficult to obtain due to the inherent spatial and temporal variability of rainfall. Gridded rainfall products exist at various scales, but temporal resolution is coarse (daily or, at best, a few hours). This study demonstrates the impact of low temporal resolution precipitation forcing data (PFD) on modelled energy fluxes, runoff and surface conditions, which could have implications for a range of applications including flood forecasting, irrigation scheduling and epidemiology. An evaporation-interception model originally developed for forests is applied here within the framework of the Surface Urban Energy and Water balance Scheme (SUEWS). The model is forced with rainfall data representative of a range of temporal resolutions (from 5 min to 3 h). Taking the highest resolution case as a reference, differences in model output are found as the temporal resolution of PFD decreases, depending on the timing of rainfall occurrence, intensity and duration. Modelled evaporation, runoff and surface wetness deviate from the reference case, which affect other variables such as the turbulent sensible heat flux. The largest impacts are seen on days with greatest daily total rainfall and, even on days with no rain, differences in antecedent conditions (soil moisture or surface wetness) can cause deviations from the reference case. Errors can be reduced by applying a disaggregation scheme that provides a more realistic distribution of rainfall, importantly, one that allows for intermittent rainfall. © 2017 The Authors. International Journal of Climatology published by John Wiley & Sons Ltd on behalf of the Royal Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117107
Appears in Collections: 气候减缓与适应
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作者单位: Department of Meteorology, University of Reading, Reading, United Kingdom; Labaun Meteorological Office, Malaysian Meteorological Department, Labaun, Malaysia
Recommended Citation:
Ward H.C.,Tan Y.S.,Gabey A.M.,et al. Impact of temporal resolution of precipitation forcing data on modelled urban-atmosphere exchanges and surface conditions[J]. International Journal of Climatology,2018-01-01,38(2)