Multi-Scale Climate Change and Its Influencing Factors in Northern Shaanxi during 1960–2020

Authors

Si Wen Xue^{1, 2, *,} , Zhou Qi^{1, 2}

¹College of Geography and Environment, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China

²Shaanxi Provincial Laboratory of Disaster Monitoring and Mechanism Simulation, Baoji 721013, Shaanxi, China

国家自然科学基金“区域气候变化风险感知与应对” (41771215)和陕西省科技统筹计划项目(2016KTCL03-17)

第一作者：薛斯文, 女, 1996-，陕西延安人，硕士研究生，从事全球变化与水资源利用研究 Email: 1213268775@qq.com

通讯作者:周旗,男,1963-，重庆荣昌人,博士,教授,主要研究全球变化与可持续发展研究, Email: 2675963235@qq.com

^*Corresponding author. Email: 1213268775@qq.com

DOI

10.2991/jracr.k.210430.001How to use a DOI?

Keywords

CEEMDAN method; wavelet analysis; BP neural network; multi-scale; Northern Shaanxi; climate

Abstract

Based on the observed data of precipitation and air temperature in Northern Shaanxi during 1960–2020, the characteristics of precipitation and air temperature at multiple time scales in Northern Shaanxi were analyzed by using CEEMDAN (Adaptive Complete Set Empirical Model) and back propagation neural network time series model. At the same time, the cross-wavelet and wavelet coherence methods were used to explore the factors affecting climate change in Northern Shaanxi. The results show that there are certain rules of precipitation and temperature in the decadal, interannual, seasonal and monthly scales in Northern Shaanxi. The interdecadal fluctuations of precipitation and temperature were dominant, and the periods were about 12–23 years and 13–21.1 years, respectively. According to the analysis of trend term, in addition to the stable fluctuation of precipitation in Northern Shaanxi, the temperature showed a fluctuating upward trend. Arctic oscillation index, Pacific decadal oscillation index, Niño 3.4 Region sea surface temperatures index and relative number of sunspots all have a certain influence on the climate change in Northern Shaanxi.

Copyright

© 2021 The Authors. Published by Atlantis Press B.V.

Open Access

This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - JOUR
AU  - Si Wen Xue
AU  - Zhou Qi
PY  - 2021
DA  - 2021/05/10
TI  - Multi-Scale Climate Change and Its Influencing Factors in Northern Shaanxi during 1960–2020
JO  - Journal of Risk Analysis and Crisis Response
SP  - 75
EP  - 85
VL  - 11
IS  - 2
SN  - 2210-8505
UR  - https://doi.org/10.2991/jracr.k.210430.001
DO  - 10.2991/jracr.k.210430.001
ID  - Xue2021
ER  -