@Article{LimaLyAbOlZeCu:2021:ChUsPr,
author = "Lima, Allana Oliveira and Lyra, Gustavo Bastos and Abreu, Marcel
Carvalho and Oliveira J{\'u}nior, Jos{\'e} Francisco and Zeri,
Marcelo and Cunha Zeri, Gisleine",
affiliation = "{Universidade Federal Fluminense (UFF)} and {Universidade Federal
Rural do Rio de Janeiro (UFRRJ)} and {Universidade Federal Rural
do Rio de Janeiro (UFRRJ)} and {Universidade Federal de Alagoas
(UFAL)} and {Centro Nacional de Monitoramento e Alertas de
Desastres Naturais (CEMADEN)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Extreme rainfall events over Rio de Janeiro State, Brazil:
Characterization using probability distribution functions and
clustering analysis",
journal = "Atmospheric Research",
year = "2021",
volume = "247",
pages = "e105221",
month = "Jan",
abstract = "Extreme rainfall events are likely to become more frequent
according to recent scenarios of climate change. This issue is
especially important over regions with complex topography, which
enhances rainfall variability when associated with weather
patterns. The state of Rio de Janeiro (SRJ), southeastern Brazil,
is characterized by altitudes ranging from the mean sea level up
to 2500 m.a.s.l, in mountain ranges and valleys covering
significant parts of the region. Time series data of annual
maximum daily rainfall were obtained from 110 stations with a data
coverage of at least 20 years, from 1960 to 2010. The Probability
Distribution Functions (PDFs) normal, log-normal, exponential,
gamma, Gumbel, Weibull, and Generalized Extreme Value (GEV) were
fitted to maximum rainfall series. Goodness-of-fit tests
(Chi-squared - \χ2 and Anderson-Darling) revealed that the
Gumbel, GEV, and log-normal were found to be the best choices.
However,the Gumbel and GEV PDFs were the best ranking by the
\χ2 and Anderson-Darling test, respectively. Extreme
rainfall events with different recurrence intervals (5, 10, 25, 50
and 100 years) were calculated based on the Gumbel and GEV
Cumulative Distribution Function (CDF). The differences between
extreme values from Gumbell and GEV function increased as the
shape parameter increases from zero, with higher probability and
extreme value. Five regions with homogeneous patterns of extreme
rainfall were identified using clustering analysis (Ward's method)
and different recurrence intervals. Overall, the regions with
higher values of extreme rainfall in all scenarios and CDFs were
the ones close to the coast, within 40 km, and south of Serra dos
{\'O}rg{\~a}os mountain range, located in the middle of the
state. The mountain range separates the state in two halves,
concentrating higher values of extreme rainfall in the lower part,
where the city of Rio de Janeiro, the state's capital, is located.
Scenarios for both CDF (GEV and Gumbel) indicated daily rainfall
events up to 200 mm, with recurrence intervals of 50 to 100 years.
In addition, the southernmost part of the state is subjected to
rainfall extremes up to 260 mm in scenarios of 50 to 100 years of
recurrence interval. This region, and the state's capital, are
characterized by complex topography and a high fraction of
population living in slums over hills, or lowlands near the ocean,
increasing the vulnerability to events such as landslides and
floods associated with extreme rainfall.",
doi = "10.1016/j.atmosres.2020.105221",
url = "http://dx.doi.org/10.1016/j.atmosres.2020.105221",
issn = "0169-8095",
language = "en",
urlaccessdate = "27 abr. 2024"
}