globalchange  > 气候减缓与适应
DOI: 10.1002/joc.5690
论文题名:
Dependence of 3-month Standardized Precipitation-Evapotranspiration Index dryness/wetness sensitivity on climatological precipitation over southwest China
作者: Sun S.; Chen H.; Li J.; Wei J.; Wang G.; Sun G.; Hua W.; Zhou S.; Deng P.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期:12
起始页码: 4568
结束页码: 4578
语种: 英语
英文关键词: dryness/wetness ; reference evapotranspiration ; sensitivity ; separation method ; southwest China
Scopus关键词: Climatology ; Earth atmosphere ; dryness/wetness ; Reference evapotranspiration ; sensitivity ; Separation methods ; Southwest China ; Evapotranspiration
英文摘要: In this study, we estimated the respective contributions of precipitation and reference evapotranspiration (ET0) to annual SPEI-3 (3-month Standardized Precipitation-Evapotranspiration Index) anomalies over southwest China (SWC) using numerical experiments. Results show that the dominant factor (i.e., precipitation or ET0) for the dryness/wetness anomalies during 1961–2012 existed due to inter-annual and inter-decadal changes over SWC, which indicates the underlying mechanisms of dry/wet conditions have changed. On the other hand, we calculate the dryness/wetness sensitivity to precipitation or ET0 (defined as changes in SPEI-3 per millimetre) and find that the dryness/wetness sensitivity to ET0 is higher than that to precipitation for the whole SWC and the overwhelming majority (99%) of the 269 sites. Overall, the above findings imply that the role of ET0 in the dry/wet condition evolution is vital and should be paid more attentions. For the magnitude of the dryness/wetness sensitivity to precipitation or ET0, an evident increase from the southeast to northwest SWC is identified. Based on the analyses of the relationship between dryness/wetness sensitivity and climatological condition (i.e., precipitation, ET0, and aridity), the sensitivity magnitude is dependent on climatological precipitation and generally decreases with its increase. This study provides a wealth of quantitative information (e.g., dryness/wetness anomalies [sensitivity] caused by [to] precipitation and ET0) for better understanding the underlying mechanisms of the dry/wet condition evolution. © 2018 Royal Meteorological Society
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116772
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster, Ministry of Education/International Joint Research Laboratory on Climate and Environment Change, Nanjing University of Information Science and Technology (NUIST), Nanjing, China; School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, China; Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States; School of Geography and Remote Sensing, Nanjing University of Information Science and Technology (NUIST), Nanjing, China; Eastern Forest Environmental Threat Assessment Center, Southern Research Station, United States Department of Agriculture Forest Services, Raleigh, NC, United States

Recommended Citation:
Sun S.,Chen H.,Li J.,et al. Dependence of 3-month Standardized Precipitation-Evapotranspiration Index dryness/wetness sensitivity on climatological precipitation over southwest China[J]. International Journal of Climatology,2018-01-01,38(12)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Sun S.]'s Articles
[Chen H.]'s Articles
[Li J.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Sun S.]'s Articles
[Chen H.]'s Articles
[Li J.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Sun S.]‘s Articles
[Chen H.]‘s Articles
[Li J.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.