Effects of non-linear temperature and precipitation trends on LoessPlateau droughts | |
Sun,CF(Sun,Changfeng)[1,2]; Ma,YY(Ma,Yongyong)[2] | |
2015 | |
发表期刊 | Quaternary International |
卷号 | 372期号:2015页码:175-179 |
文章类型 | 期刊论文 |
摘要 | 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. |
关键词 | Drought Temperature Precipitation Non-linear Trend Ensemble Empirical Mode Decomposition Loess Plateau |
DOI | 10.1016/j.quaint.2015.01.051 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9459 |
专题 | 现代环境研究室 |
作者单位 | 1.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 |
推荐引用方式 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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