DOI: 10.1016/j.atmosres.2018.05.014
Scopus记录号: 2-s2.0-85048252739
论文题名: Temporal and spatial variations of soil moisture – Precipitation feedback in East China during the East Asian summer monsoon period: A sensitivity study
作者: Zhong S. ; Yang T. ; Qian Y. ; Zhu J. ; Wu F.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 213 起始页码: 163
结束页码: 172
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; Climate change
; Coastal zones
; Feedback
; Rain
; Sensitivity analysis
; Soil moisture
; Convective precipitation
; Daily precipitations
; East Asian summer monsoon
; Initial soil moisture
; Large-scale precipitation
; Soil-moisture effects
; Summer precipitation
; Temporal and spatial variation
; Soil surveys
; monsoon
; precipitation (climatology)
; rainfall
; regional climate
; sensitivity analysis
; soil moisture
; spatial variation
; summer
; temporal variation
; weather forecasting
; China
英文摘要: Numerical simulations using a state-of-the-art model WRF are conducted to investigate the impact of initial soil moisture disturbance (early May) on subsequent summer precipitation during the East Asian summer monsoon period. The control experiment with the realistic soil moisture condition can well reproduce the spatial distribution of accumulated precipitation, as well as the temporal evolution of rainfall belt in East China. Major findings concerning the soil moisture impact on summer precipitation are the following. (1) The influence of initial soil-moisture on subsequent precipitation is regionally dependent, i.e., the dry soil moisture condition leads to less precipitation over both South China and Central China, and much more precipitation in coastal regions in East China. (2) The impact on non-convective precipitation is twice greater than that on convective rainfall, indicating a dominant role of initial soil moisture in total precipitation via the modification of the large-scale precipitation processes. (3) The soil moisture effect on daily precipitation highly varies with different rainfall events during the monsoonal season, suggesting a great uncertainty of soil moisture–precipitation feedback process on synoptic scale. Therefore, it is of great meaning to examine the feedback between soil moisture and precipitation on climatic scale. (4) The drier soil moisture condition reduces the rainfall frequency from light to heavy precipitation in Central China, but increases the occurrence of nearly all categories of rainfall rates in the coastal region in East China. For South China region, however, the drier soil moisture condition leads to more occurrence of light to middle precipitation categories (2–10 mm/d), and less frequency to heavy rainfall (>10 mm/d). © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108774
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Center for Global Change and Water Cycle, Hohai University, Nanjing, China; Pacific Northwest National Laboratory, Richland, WA, United States; School of Atmospheric Sciences, Nanjing University, Nanjing, China
Recommended Citation:
Zhong S.,Yang T.,Qian Y.,et al. Temporal and spatial variations of soil moisture – Precipitation feedback in East China during the East Asian summer monsoon period: A sensitivity study[J]. Atmospheric Research,2018-01-01,213