DOI: 10.1002/joc.5506
论文题名: Bias correction of the observed daily precipitation and re-division of climatic zones in China
作者: Li N. ; Li Y. ; Yao N.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 8 起始页码: 3369
结束页码: 3387
语种: 英语
英文关键词: bias correction
; China
; climatic zone re-division
; precipitation
Scopus关键词: C (programming language)
; Gages
; Meteorological instruments
; Precipitation (chemical)
; Wind
; Annual mean precipitation
; Bias correction
; China
; Climatic zone
; Corrected precipitation
; Daily precipitations
; Precipitation gauges
; United Nations Environment Programme
; Climate change
; climate change
; climate conditions
; correction
; humid environment
; precipitation (climatology)
; raingauge
; China
英文摘要: Using accurate precipitation data is critical to climate and hydrology research, but current studies have found that the precipitation measured by various standard precipitation gauges (P m ) is much smaller than actual precipitation and there is a necessity to conduct bias correction before using the gauge-measured precipitation (P m ) data. Using the daily P m , wind speed and temperature data from 553 weather stations in China over 1961–2015, the wind-induced error (∆P DL ), trace precipitation (ΔP t ) and wetting loss (ΔP w ) and the corrected precipitation (P c ) were systematically estimated. Consequently, the originally P m -based climate zone division changed after the precipitation bias correction. The climate zone re-division was conducted using four P c -based indices, that is, annual mean precipitation P Erinc's index I m , Sahin's index I sh and the United Nations Environment Programme (UNEP) aridity index I A . The results showed that annual mean correction amounts (p diff ) over 1961–2015 varied between 40.5 and 600.2 mm with the average value of 146.2 mm in China. The ranges of annual mean values of ΔP t was 11.6–35.3 mm with an average of 24.8 mm, of ΔP w was 3.6–74.2 mm with an average of 34.07 mm and of ΔP DL was 1.4–525.7 mm with an average of 87.3 mm, respectively. The spatial distribution of p diff decreased from the northwest to the southeast. Annual P diff was generally smaller than 100 mm in northwestern China, but greater than 150 mm in southeastern China. By climate zone re-division, the areas of severe arid decreased but the areas of severe humid areas increased, which indicated that actual climate conditions of China should be wetter than present assessment results. In conclusion, the bias correction indicated that a corrected climate zone division should be referred in future climatic change research. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116860
Appears in Collections: 气候减缓与适应
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作者单位: College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, China; Institute of Water-Saving Agriculture in Arid Areas of China, Northwest A&F University, Yangling, China
Recommended Citation:
Li N.,Li Y.,Yao N.. Bias correction of the observed daily precipitation and re-division of climatic zones in China[J]. International Journal of Climatology,2018-01-01,38(8)