IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.4
Historical temporal variation in precipitation over Western Himalayan Region: 1857-2006
Naresh KUMAR; Ashok Kumar JASWAL
Corresponding AuthorNaresh KUMAR
Source PublicationJournal of Mountain Science
AbstractThis study has examined the temporal variation in monthly, seasonal & annual precipitation over the Western Himalayan Region (WHR) and the influence of global teleconnections, like the North Atlantic Oscillation (NAO) and Southern Oscillation (SO) Indices on seasonal & annual precipitation. The Mann–Kendall non-parametric test is applied for trend detection and the Pettitt–Mann–Whitney test is used to detect possible shift. Maximum entropy spectral analysis is applied to find the periodicity in annual & seasonal precipitation. The study shows a non-significant decreasing trend in annual precipitation over WHR for the period 1857-2006. However, in seasonal precipitation, a significant decreasing trend is observed in monsoon and a significant increasing trend in post-monsoon season during the same period. The significant decrease in monsoon precipitation may be due to weakening of its teleconnection with NAO as well as SO Indices mainly during last three decades. It is observed that the probable change of year in annual & monsoon precipitation over WHR is 1979. The study also shows significant periodicities of 2.3-2.9 years and of 3.9-4.7 years in annual & seasonal precipitation over WHR.
KeywordMonsoon Precipitation Western Himalayan Region Temporal Variation
Indexed BySCI
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Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.4
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Naresh KUMAR,Ashok Kumar JASWAL. Historical temporal variation in precipitation over Western Himalayan Region: 1857-2006[J]. Journal of Mountain Science,2016,13(4):672-681.
APA Naresh KUMAR,&Ashok Kumar JASWAL.(2016).Historical temporal variation in precipitation over Western Himalayan Region: 1857-2006.Journal of Mountain Science,13(4),672-681.
MLA Naresh KUMAR,et al."Historical temporal variation in precipitation over Western Himalayan Region: 1857-2006".Journal of Mountain Science 13.4(2016):672-681.
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