Abstract
In the recent past, there were extensive floods in the Western Himalayan region (WHR) due to continuous long spells of heavy rainfall for 3–4 days that caused a huge loss in life and property over the region. WHR is a data sparse region, with limited meteorological stations having a continuous long spell of daily precipitation data. In the present study, spatial and temporal variability of seasonal as well as annual precipitation, precipitation days and maximum accumulated daily, 2 days, 3 days, 4 days and 5 days precipitation over WHR is considered by using daily precipitation data of 18 meteorological stations of the region. Out of 18 meteorological stations, five stations have continuous data from 1901 to 1980 and remaining 13 stations data is considered for their common period from 1981 to 2014. Accordingly, the analysis is carried out in two parts, first for 1901–1980 (for 5 stations) and second for 1981–2014 (for all the 18 stations). The analysis suggests high variability in the spatial and temporal distribution of seasonal as well as maximum accumulated daily to 5 days precipitation over WHR. In general, increasing trends in maximum accumulated precipitation in lower altitude stations and decreasing trends in higher altitude stations are observed in monsoon season and vice-versa in the winter season during the period 1981–2014. The increase in maximum accumulated daily to 5 days precipitation is up to 9.7 mm per decade during 1901–1980 and is up to 45.5 mm per decade during 1981–2014 in monsoon season in lower altitude stations. Thus, the increase in maximum accumulated precipitation during monsoon season becomes manifold during 1981–2014 as compared to the period 1901–1980.
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Authors are very thankful to the editor and anonymous reviewers for their helpful comments for improving the manuscript.
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Naresh Kumar: Data collection, methodology investigation, writing, validation, preparation of figures. M Mohpatra and A P Dimri: Conceptualization, supervision, visualization, mentoring, reviewing and editing. M Anand: Computation and analysis.
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Communicated by Kavirajan Rajendran
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Kumar, N., Mohapatra, M., Dimri, A.P. et al. Spatial and temporal variation in daily precipitation indices over Western Himalayas. J Earth Syst Sci 130, 151 (2021). https://doi.org/10.1007/s12040-021-01647-6
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DOI: https://doi.org/10.1007/s12040-021-01647-6