干旱区生态环境知识资源中心(Arid): Teleconnections of Large-Scale Climate Patterns to Regional Drought in Mid-Latitudes: A Case Study in Xinjiang, China

Arid

DOI	10.3390/atmos13020230
	Teleconnections of Large-Scale Climate Patterns to Regional Drought in Mid-Latitudes: A Case Study in Xinjiang, China
	Yang, Ruting; Xing, Bing
通讯作者	Xing, B (corresponding author)，Chongqing Jiaotong Univ, Coll Hehai, Chongqing 400074, Peoples R China. ; Xing, B (corresponding author)，Natl Engn Res Ctr Inland Waterway Regulat, Chongqing 400074, Peoples R China.
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2022
卷号	13 期号:2
英文摘要	Drought is one of the most important environmental disasters. Assessment of the effects of oceanic atmospheric oscillations upon regional drought behavior has valuable implications for water resources management, especially for arid regions. This study aims to explore the climate drivers of drought conditions in Xinjiang, an arid region in mid-latitude Asia. Standardized Precipitation Evapotranspiration Index (SPEI) was adopted to describe drought variation over Xinjiang during the period of 1951-2020. Teleconnection effects of El Nino Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO), Atlantic Multidecadal Oscillation (AMO), and Arctic Oscillation (AO) on Xinjiang drought variability were analyzed based on cross-correlation and stepwise regression methods. Partial correlation analysis was applied to discuss the responding mechanism of drought behavior to teleconnection signals from the perspective of regional climate factors. Findings from this study indicate that synchronous ENSO featured by Nino3.4 index has a significant positive correlation with Xinjiang dry/wet variation. El Nino may favor to wetness in Xinjiang, while La Nina may exacerbate drought effect in the region. ENSO mainly acts on the short-term drought variability in Xinjiang region. The synchronous PDO makes a leading contribution on drought variation at 12-month time scale among the four signals. The significant positive correlation between PDO and drought variation suggests that positive-phase (negative-phase) PDO may contribute to wetting (drying) epochs in Xinjiang region. AMO indicates a significant negative correlation with Xinjiang drought on both synchronous and asynchronous modes. Positive (negative) phase AMO may favor to dry (wet) effects in Xinjiang. AMO appears a predominant teleconnection effect on long-term drought variability, and fluctuates a persistent anti-phase mode with Xinjiang dry/wet variability since the mid-1980s. AO mainly acts on short-term drought fluctuations, indicating a significant negative correlation with drought behavior within a 12-month moving time window. Positive (negative) phase AO may contribute to dry (wet) epochs over Xinjiang. ENSO and PDO affect short-term dry/wet variation mainly through the teleconnection effect on precipitation variability. AMO mainly influences Xinjiang drought evolution by acting on regional temperature variation. The influence of internal atmospheric variability on regional climate behavior has a delayed effect, and drought variability is affected by precursor pattern of teleconnection likewise.
英文关键词	oceanic atmospheric oscillation ENSO AO cross-correlation partial correlation drought variability Xinjiang
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000763030100001
WOS关键词	PRECIPITATION EVAPOTRANSPIRATION INDEX ; SPATIOTEMPORAL VARIABILITY ; TEMPORAL CHARACTERISTICS ; INDIAN-OCEAN ; CENTRAL-ASIA ; ARID REGION ; EL-NINO ; ENSO ; RAINFALL ; OSCILLATIONS
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376378
作者单位	[Yang, Ruting; Xing, Bing] Chongqing Jiaotong Univ, Coll Hehai, Chongqing 400074, Peoples R China; [Yang, Ruting; Xing, Bing] Natl Engn Res Ctr Inland Waterway Regulat, Chongqing 400074, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ruting,Xing, Bing. Teleconnections of Large-Scale Climate Patterns to Regional Drought in Mid-Latitudes: A Case Study in Xinjiang, China[J],2022,13(2).
APA	Yang, Ruting,&Xing, Bing.(2022).Teleconnections of Large-Scale Climate Patterns to Regional Drought in Mid-Latitudes: A Case Study in Xinjiang, China.ATMOSPHERE,13(2).
MLA	Yang, Ruting,et al."Teleconnections of Large-Scale Climate Patterns to Regional Drought in Mid-Latitudes: A Case Study in Xinjiang, China".ATMOSPHERE 13.2(2022).