Teleconnection patterns of precipitation in the Three-River Headwaters region, China

Bibliographic Data

ID15549145
AuthorsYiyang Dong (0000-0003-4610-4609, China Institute of Water Resources and Hydropower Research), Jiaqi Zhai (0009-0002-7141-1934, China Institute of Water Resources and Hydropower Research), Yong Zhao (0000-0003-1926-9731, China Institute of Water Resources and Hydropower Research, corresponding author), Haihong Li (0000-0002-6263-619X, China Institute of Water Resources and Hydropower Research), Qingming Wang (0000-0002-6421-7060, China Institute of Water Resources and Hydropower Research), Shan Jiang (0000-0001-7766-222X, China Institute of Water Resources and Hydropower Research), Huanyu Chang (China Institute of Water Resources and Hydropower Research), Zhiyong Ding (0000-0002-6658-7460, Beijing Normal University, corresponding author)
Year2020
Volume15
Issue10
Pages104050-104050
Publication date2020-07-23
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueEnvironmental Research Letters (JOURNAL)
Journal identifiersISSN: 1748-9326 • E-ISSN: 1748-9326
PublisherIOP Publishing (PUBLISHER • GB)
DOI10.1088/1748-9326/aba8c0
OpenAlexW3044538041
LanguageEN
Citations received1
References cited87

With the intensification of global warming, spatiotemporal variations in the climate and their mechanisms have received increasing attention. Currently, the relationship between regional precipitation regime, large-scale circulation, and topography, particularly in high-altitude areas such as the Qinghai–Tibet Plateau, are not well understood. Herein, the spatial and temporal variability in the annual and intra-annual (wet and dry periods) precipitation at 33 stations in the Three-River Headwaters (TRH) region from 1967 to 2016 are analysed. Moreover, the empirical orthogonal function and wavelet transform coherence methods are used to analyse the relationships between the different modes of precipitation change and 14 atmospheric circulation indices. The following results were obtained. (1) The mean annual precipitation and mean dry period precipitation significantly increased over the studied period. Annual and intra-annual precipitation showed a spatial southeast-to-northwest decreasing trend. (2) Two main patterns of precipitation were observed during the studied period: a dominant pattern with high- and low-value centres located in southeast and northwest TRH, respectively, and a dipole pattern with more precipitation over southwest TRH and less precipitation over northeast TRH. (3) Precipitation had a negative correlation with latitude, positive correlation with longitude, and nonlinear relationship with elevation. (4) Precipitation changes over various parts of the studied domain were determined based on changes in the weather systems affecting the area, with different indices being correlated with different components during different times of the year

Altitude (triangle · Atmospheric Circulation · Atmospheric sciences · Climatology · Geography · Latitude · Longitude · Meteorology · Period (music · Physical geography · Plateau (mathematics · Precipitation · Teleconnection · Climate variability and models · Environmental Science · Meteorological Phenomena and Simulations · Precipitation Measurement and Analysis · Geology

Tools

Open DOIOpen Access