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Modeling of rainfall time series using NAR and ARIMA model over western Himalaya, India

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Abstract

The high Himalayas in northern India are an essential source of climate generation and maintenance over the entire northern belt of the Indian subcontinent. It also affects extreme weather phenomena such as western disturbances in the region during winter. The work presented here describes the trends in 117-year precipitation changes and their impact on the western Himalayas and suggests some possible explanations in the context of changing rainfall patterns. Under the investigation, the forecasting efficiency and the prediction pattern of artificial neural network (ANN) and seasonal autoregressive integrated moving average (SARIMA) models for rainfall series in the western Himalayan states of India have been assessed. The results revealed significant changes in the monthly, seasonal, and annual rainfall series data for the three states of the Western Himalayan regions from the years 1900 to 2017. The study also concludes that the nonlinear autoregressive neural network (NARNN) models can be used to forecast the western Himalayan region data series well. According to the result interpretation, the highest rainfall may be estimated in August, 1632.63 mm (2023), whereas the lowest rainfall can be obtained in October (0.43 mm) during 2023. The model predicted a gradual decrease in annual rainfall trends in Uttarakhand and Himachal Pradesh from 2018 to 2023 despite heavy rainfall prediction in the monsoon season, whereas Jammu and Kashmir increase in annual rainfall has been predicted from 2018 to 2023. Possible explanations for the change in precipitation over the western Himalayas have also been proposed and explained.

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Data availability

Availability of data and material rainfall series was collected from Open Government Data (OGD) Platform India (www.data.gov.in).

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The code will be made available if asked for.

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Acknowledgements

Authors acknowledge Open Government Data (OGD) Platform India for data availability.

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Contributions

Preparation of the original manuscript: DR and PM; data compilation: SR, HHFW, and SPS; coding and analysis: GM, HA, and MA; results and discussion: DR, PM, SR, and HHFW; finalization of the manuscript: DR, PM, and SR.

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Correspondence to Pradeep Mishra.

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The authors declare no competing interests.

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Responsible Editor: Zhihua Zhang

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Rawat, D., Mishra, P., Ray, S. et al. Modeling of rainfall time series using NAR and ARIMA model over western Himalaya, India. Arab J Geosci 15, 1696 (2022). https://doi.org/10.1007/s12517-022-10994-7

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  • DOI: https://doi.org/10.1007/s12517-022-10994-7

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