Analyses through the Metastatistical Extreme Value distribution identify contributions of Tropical Cyclones to rainfall extremes in the Eastern US


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Created: Mar 26, 2020 at 12:27 p.m.
Last updated: Apr 13, 2020 at 1:15 p.m.
DOI: 10.4211/hs.384c9df02fab4051a21db7e4f210eb36
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Abstract

Tropical Cyclones (TCs) generate extreme precipitation with severe impacts across large coastal and inland areas, calling for accurate frequency estimation methods. Statistical approaches that take into account the physical mechanisms responsible for these extremes can help reducing the estimation uncertainty. Here we formulate a mixed-population Metastatistical Extreme Value Distribution explicitly incorporating non-TC and TC-induced rainfall and evaluate its implications on long series of daily rainfall for six major U.S. urban areas impacted by these storms. We find statistically significant differences between the distributions of TCand non-TC-related precipitation; moreover, including mixtures of distributions improves the estimation of the probability of extreme precipitation where TCs occur more frequently. These improvements are greater when rainfall aggregated over duration longer than one day are considered.

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This resource was created using funding from the following sources:
Agency Name Award Title Award Number
Foundation "Cassa di Risparmio di Padova e Rovigo"
National Science Foundation Quantification of the Impacts of Urban Areas on Heavy Rainfall and Flooding from North Atlantic Tropical Cyclones EAR-1840742
US Army Corps of Engineers
Venice Water Authority Venice 2021 Project Line 1.3 Modellazione numerica integrata del sistema bacino scolante-laguna-mare

How to Cite

Miniussi, A., G. Villarini, M. Marani (2020). Analyses through the Metastatistical Extreme Value distribution identify contributions of Tropical Cyclones to rainfall extremes in the Eastern US, HydroShare, https://doi.org/10.4211/hs.384c9df02fab4051a21db7e4f210eb36

This resource is shared under the Creative Commons Attribution CC BY.

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Gabriele Villarini 1 year, 10 months ago

This is based on the paper:

Miniussi, A., G. Villarini, and M. Marani, Analyses through the metastatistical extreme value distribution identify contributions of tropical cyclones to rainfall extremes in the eastern US, Geophysical Research Letters, 2020 (in press).

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