On the causes of tropical cyclone driven floods in India

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dc.contributor.author Rajeev, Akshay
dc.contributor.author Mishra, Vimal
dc.coverage.spatial United States of America
dc.date.accessioned 2022-03-29T10:53:09Z
dc.date.available 2022-03-29T10:53:09Z
dc.date.issued 2022-06
dc.identifier.citation Rajeev, Akshay and Mishra, Vimal, "On the causes of tropical cyclone driven floods in India", Weather and Climate Extremes, DOI: 10.1016/j.wace.2022.100432, vol. 36, Jun. 2022. en_US
dc.identifier.issn 2212-0947
dc.identifier.uri https://doi.org/10.1016/j.wace.2022.100432
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7622
dc.description.abstract Landfalling tropical cyclones (TCs) cause severe damage to infrastructure and economic losses in India. Extreme rainfall from TCs can lead to flooding, which disrupts the lives of people and their socio-economic well-being. Despite the severe hazards caused by TCs in India, their impacts on river basin-scale flooding are not well examined. Here, we use cyclone tracks from India Meteorological Department (IMD) and ERA5-Land reanalysis to identify the drivers of TC induced floods in India. We select TCs that affected the Subarnarekha, Brahmani, Mahanadi, and Vamshadhara river basins during the 1981-2019 period. We estimated return periods of extreme daily and hourly rainfall and total runoff associated with TCs. We examined the role of antecedent soil moisture on floods caused by TCs. Our results show that the distribution of extreme rainfall over a basin from TCs depend on the translation speed, track length, and size of the TC. Severe flooding in the basins is strongly linked to antecedent soil moisture conditions. Regardless of extreme rainfall, flooding due to TCs during the pre-monsoon (April-May) is less likely because of dry antecedent soil moisture conditions. On the other hand, TCs can lead to severe flooding during the summer monsoon (June-September) period due to relatively wetter antecedent conditions. In the post-monsoon season (October-November), the severity of flooding caused by TCs is higher than the pre-monsoon season, and as we move further into the post-monsoon this severity reduces. Our findings highlight the need to monitor the land-surface characteristics and TC track prediction to identify the potential of flooding from landfalling TCs.
dc.description.statementofresponsibility by Akshay Rajeev and Vimal Mishra
dc.format.extent vol. 36
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Landfalling tropical cyclones en_US
dc.subject Extreme rainfall en_US
dc.subject ERA5-Land reanalysis en_US
dc.subject Antecedent conditions en_US
dc.subject Vamshadhara river en_US
dc.title On the causes of tropical cyclone driven floods in India en_US
dc.type Article en_US
dc.relation.journal Weather and Climate Extremes

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