兰州大学机构库
Seasonally Evolving Trends Explain the North-South Dipole Pattern Observed in Tibetan Plateau Precipitation
Ma, Jieru1,2; Ren, Hong-Li1,2; Cai, Ming3; Huang, JP(黄建平)4
2023-09-16
Source PublicationGEOPHYSICAL RESEARCH LETTERS   Impact Factor & Quartile
ISSN0094-8276 ; 1944-8007
Volume50Issue:17
page numbers10
AbstractThe Tibetan Plateau (TP) precipitation is experiencing the north-south dipole tendency pattern since 1979. In this study, we identify four primary seasonally evolving patterns (SEPs) that explain approximately 50% of the total variance in precipitation variability over the TP. These SEPs contribute 60%-90% of the spatial mean amplitude of precipitation trends across seasons. In particular, the second SEP that features a north-south dipole pattern dominates the annual mean trend of the precipitation over the TP. The interdecadal variability of the seasonally evolving north-south dipole pattern is linked to the interdecadal variations of summer Silk Road Pattern and Indian monsoon. These findings suggest that the climate variability expressed through SEPs could potentially serve as a significant source for the interdecadal rainfall prediction. The Tibetan Plateau (TP) is experiencing the north-wetting-south-drying trend due to the imbalance of the Asian water tower since 1979, influencing the water supply to billions of people and regional and global climate. However, the characteristics of the seasonally evolving variations of precipitation across seasons on multiyear timescales, as well as the associated major circulation patterns, remain unknown. Here we identify four primary seasonally evolving patterns (SEPs) and focus on investigating their corresponding long-term trends and interdecadal variations. These four modes collectively contribute by 60%-90% of the spatial mean amplitude of precipitation trends across seasons. In particular, the trend of the second SEP that features a north-south dipole explains the spatio-temporal disparity of the total precipitation trend, displaying the strongest amplitude in summer over the TP. Our findings provide insight into the climate variability manifested in SEPs as a major source for the interdecadal prediction of rainfall evolution in the Asian water tower. Seasonally evolving patterns (SEPs) explain 60%-90% of the spatial mean amplitude of total precipitation trend over the Tibetan PlateauThe second SEP trend with a north-south dipole pattern mainly contributes to the spatio-temporal disparity of the total precipitation trendThe seasonally evolving north-south dipole trend is linked to the Silk Road pattern and the Indian monsoon variations
KeywordTibetan Plateau precipitation seasonal evolving trend seasonal cycle north-south dipole pattern
PublisherAMER GEOPHYSICAL UNION
DOI10.1029/2023GL104891
Indexed BySCIE
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:001059712000001
Original Document TypeArticle
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568463
Collection兰州大学
大气科学学院
Corresponding AuthorRen, Hong-Li
Affiliation
1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China;
2.Chinese Acad Meteorol Sci, Inst Tibetan Plateau Meteorol, Beijing, Peoples R China;
3.Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32304 USA;
4.Lanzhou Univ, Coll Atmospher Sci, Collaborat Innovat Ctr Western Ecol Safety, Lanzhou, Peoples R China
Recommended Citation
GB/T 7714
Ma, Jieru,Ren, Hong-Li,Cai, Ming,et al. Seasonally Evolving Trends Explain the North-South Dipole Pattern Observed in Tibetan Plateau Precipitation[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(17).
APA Ma, Jieru,Ren, Hong-Li,Cai, Ming,&Huang, Jianping.(2023).Seasonally Evolving Trends Explain the North-South Dipole Pattern Observed in Tibetan Plateau Precipitation.GEOPHYSICAL RESEARCH LETTERS,50(17).
MLA Ma, Jieru,et al."Seasonally Evolving Trends Explain the North-South Dipole Pattern Observed in Tibetan Plateau Precipitation".GEOPHYSICAL RESEARCH LETTERS 50.17(2023).
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