Extreme rainfall event analysis over the state of Himachal Pradesh in India

Autor: KRUSHNA CHANDRA GOUDA, Sudhansu S Rath, Nidhi Singh, Sayanta Ghosh, Renu Lata
Rok vydání: 2022
Předmět:
Zdroj: Theoretical and Applied Climatology. 151:1103-1111
ISSN: 1434-4483
0177-798X
Popis: The extreme rainfall events are very localized and intense events witnessing heavy rainfall resulting in flash floods and landslides in the Himalayan region. The trend of EREs in the Himachal basin shows an increasing trend, so in this study, an attempt is being made for quantifying the climatological feature of these EREs in the state of Himachal Pradesh in the western Himalayan Mountain region using the multi-source observed data sets for the long-term period i.e., 1901 to 2020. The climatology analysis indicates northern and southern part of the state receives comparatively more rainfall and the state witnessed a decreasing trend of the rainfall in the current decade. The classification of these EREs in terms of monsoon and non-monsoon with a different threshold of daily rainfall is being analyzed and it is found that almost 90% of extreme events are observed in the monsoon season. The zone centered around 32.5oN and 76.25oE is seems to be the hotspot for the frequent EREs in the mountainous state. The spatial analysis of the ERE trend also indicated that almost 40% of the state witnesses the heavy rainfall throughout the years. This observational study will surely help in understanding the dynamics of these ERE in the higher altitude regions and can be a good input for the hydro-meteorological disaster management and mitigation.
Databáze: OpenAIRE
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