Trend and concentration characteristics of precipitation and related climatic teleconnections from 1982 to 2010 in the Beas River basin, India

• Published in: Global and Planetary Change
• Main Authors: Yin, Yixing, Xu, Chong-Yu, Chen, Haishan, Li, Lu, Xu, Hongliang, Li, Hong, Jain, Sharad K.
• Other Authors: Xu, CY (reprint author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China., Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Minist Educ, Nanjing 210044, Jiangsu, Peoples R China., Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China., Univ Oslo, Dept Geosci, POB 1047, N-0316 Oslo, Norway., Nanjing Univ Informat Sci & Technol, Coll Hydrometeorol, Nanjing 210044, Jiangsu, Peoples R China., Bjerknes Ctr Climate Res, Bergen, Norway., Uni Res, Uni Climate, Bergen, Norway., Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Shenzhen, Peoples R China., Natl Inst Hydrol, Roorkee 247667, Uttar Pradesh, India.
• Format: Journal/Newspaper
• Language: English
• Published: GLOBAL AND PLANETARY CHANGE 2016
• Subjects: Precipitation; Trend; Concentration; Climatic teleconnections; Beas River basin; NORTH-ATLANTIC OSCILLATION; SUMMER MONSOON RAINFALL; HIMACHAL-PRADESH; WAVELET ANALYSIS; UNITED-STATES; OCEAN DIPOLE; ENSO; VARIABILITY; HIMALAYA; DISCHARGE; Indian; Kendall; Norway; North Atlantic; North Atlantic oscillation
• Online Access: https://hdl.handle.net/20.500.11897/449994; https://doi.org/10.1016/j.gloplacha.2016.08.011

The Beas River, located in the Western Himalayan mountainous regions in India, is one of the major tributaries of the Indus River. However, recent changes of precipitation and related climatic teleconnections in this river basin have rarely been investigated yet. In this study, the trend and concentration characteristics of precipitation during 1982-2010 are investigated by using Mann-Kendall trend test and two kinds of concentration indices. The climatic teleconnections are explored with the help of cross correlation, wavelet transform and composite analysis, revealing the relationship of precipitation with climatic indices of Indian summer monsoon (ISM), El Nino/Southem Oscillation (ENSO), Indian Ocean Dipole (IOD) and North Atlantic Oscillation (NAO). The results indicate that: (1) Precipitation of most of the stations increased in the monsoon season while precipitation of all the stations decreased in the non-monsoon seasons. As a result, the annual precipitation of the majority of the stations was on the decrease. (2) A general increase in the precipitation Gini coefficient and precipitation concentration degree (PCD) was detected. Moreover, the precipitation concentration period (PCP) is mainly within the period from May to August, and more PCP occurred in the monsoon months recently. (3) The relationship-between monsoon precipitation and ISM is not significant in the Beas River basin. The relationship between precipitation and ENSO in winter is less significant than in the monsoon season, and the relationship of monsoon/winter precipitation with IOD is not as evident as that with ENSO. Besides, ENSO and NAO play important roles in the changes of monsoon and winter precipitation in the Beas River basin. (C) 2016 Elsevier B.V. All rights reserved. Research Council of Norway projects JOINTINDNOR [203867]; China Postdoctoral Science Foundation [2013M531384]; National Natural Science Foundation of China [41671022]; Jiangsu Planned Projects for Postdoctoral Research Funds [1301136C]; Natural Science Foundation of the Jiangsu Higher Education Institutions [15KJB170014] SCI(E) EI ARTICLE [e-mail] 116-129 145