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Effects of non-linear temperature and precipitation trends on LoessPlateau droughts
Sun,CF(Sun,Changfeng)[1,2]; Ma,YY(Ma,Yongyong)[2]
2015
Source PublicationQuaternary International
Volume372Issue:2015Pages:175-179
Subtype期刊论文
Abstract

In this study, we analysed the effects of non-linear temperature and precipitation trends on Loess Plateau droughts over the period of 1961e2010. The most commonly used drought index, the Palmer Drought Severity Index (PDSI), was used to represent the drought conditions in the study region. We first calculated the Loess Plateau PDSI using monthly temperature and precipitation from 53 meteorological stations and then determined trends in the PDSI, temperature, and precipitation using the ensemble empirical mode decomposition (EEMD) time series analysis method. Because of the different change characteristics and trends, precipitation plays an important role in the interannual variation in the PDSI, while temperature drives the PDSI trend change. The differences between the observed PDSI and the calculated results using the detrended temperature and observed precipitation, the observed temperature and detrended precipitation, and the detrended temperature and precipitation indicate that impact of the precipitation trend on droughts is smaller than the impact of the temperature trend. The increase in the observed temperature and limited decrease in the precipitation tend to increase drought in the Loess Plateau. The Loess Plateau will become drier and warmer in the future under climate change.

KeywordDrought Temperature Precipitation Non-linear Trend Ensemble Empirical Mode Decomposition Loess Plateau
DOI10.1016/j.quaint.2015.01.051
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9459
Collection现代环境研究室
Affiliation1.Department of Earth and Environmental Science, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, No.28, Xianning WestRoad, Xi'an, 710049, China;
2.The State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, No.10 Fenghui South Road, Xi'an,710075, China
Recommended Citation
GB/T 7714
Sun,CF,Ma,YY. Effects of non-linear temperature and precipitation trends on LoessPlateau droughts[J]. Quaternary International,2015,372(2015):175-179.
APA Sun,CF,&Ma,YY.(2015).Effects of non-linear temperature and precipitation trends on LoessPlateau droughts.Quaternary International,372(2015),175-179.
MLA Sun,CF,et al."Effects of non-linear temperature and precipitation trends on LoessPlateau droughts".Quaternary International 372.2015(2015):175-179.
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