@MastersThesis{Mandú:2022:ClOnCa,
author = "Mand{\'u}, Tiago Bentes",
title = "Climatologia de ondas de calor e de frio no Brasil e
rela{\c{c}}{\~o}es com as fases do El Niņo Oscila{\c{c}}{\~a}o
Sul",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2022",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2022-03-25",
keywords = "climatologia, oscila{\c{c}}{\~a}o Sul, distribui{\c{c}}{\~a}o
de temperatura, climatology, southern oscillation, temperature
distribution.",
abstract = "Eventos extremos de temperatura causam efeitos adversos em
in{\'u}meros segmentos da sociedade, como por exemplo na
sa{\'u}de e bem estar do ser humano, agricultura, pecu{\'a}ria,
demanda h{\'{\i}}drica e de energia el{\'e}trica. Os
epis{\'o}dios de ondas de calor (OC) (ondas de frio-OF) s{\~a}o
extremos prolongados de temperatura, definidos como
per{\'{\i}}odos de dias consecutivos de calor (frio) exacerbado.
O objetivo do trabalho foi avaliar as principais
caracter{\'{\i}}sticas climatol{\'o}gicas das OC e OF no Brasil
e avaliar suas rela{\c{c}}{\~o}es com o El
Niņo-Oscila{\c{c}}{\~a}o Sul (ENOS). Foram utilizados dados
di{\'a}rios de temperatura m{\'a}xima, m{\'e}dia e
m{\'{\i}}nima do ar provenientes de esta{\c{c}}{\~o}es
meteorol{\'o}gicas convencionais para o per{\'{\i}}odo de 1961
a 2019, que foram submetidos a consist{\^e}ncia destes registros
a fim de remover dados esp{\'u}rios. Regi{\~o}es homog{\^e}neas
foram identificadas atrav{\'e}s da an{\'a}lise de agrupamento da
temperatura compensada do ar. As s{\'e}ries temporais de
temperatura m{\'a}xima e m{\'{\i}}nima do ar das regi{\~o}es
foram utilizadas na identifica{\c{c}}{\~a}o dos epis{\'o}dios
de OC e OF, respectivamente. As fases do ENOS foram identificadas
trimestralmente usando o Oceanic Niņo Index. As an{\'a}lises
foram realizadas a partir de estat{\'{\i}}sticas descritivas,
testes de hip{\'o}teses e transformadas em ondeletas. A
regionaliza{\c{c}}{\~a}o de 4 grupos foi adequada, pois concorda
com as caracter{\'{\i}}sticas t{\'e}rmicas, climatol{\'o}gicas
e topogr{\'a}ficas de cada {\'a}rea. Os eventos de OC e OF
apresentaram maior ocorr{\^e}ncia na por{\c{c}}{\~a}o
centro-sul do pa{\'{\i}}s, com alta variabilidade interanual em
todos os grupos. Tend{\^e}ncias positivas estatisticamente
significativas foram notadas para as OC na regi{\~a}o tropical do
pa{\'{\i}}s e negativas para as OF em todo o Brasil. A
an{\'a}lise de ondeletas indicou a escala de tempo dominante de 4
anos para os dois extremos, com aumento de eventos de OC durante a
fase quente do ENOS na regi{\~a}o tropical e
diminui{\c{c}}{\~a}o na por{\c{c}}{\~a}o subtropical, sendo
notado o inverso para as OF. Espera-se que esses resultados possam
colaborar para o melhor entendimento destes extremos de
temperatura no pa{\'{\i}}s. ABSTRACT: Extreme temperature events
cause adverse effects on numerous segments of society, such as
human health and well-being, agriculture, livestock, water demand
and electricity. Episodes of HeatWaves (HW) (Cold Waves-CW) are
prolonged extremes of temperature, defined as periods of
consecutive days of exacerbated (heat) cold. The objective of this
work was to evaluate the main climatological characteristics of
the HW and CW in Brazil and to evaluate their relationship with
the El Niņo-Southern Oscillation (ENSO). Daily maximum, average
and minimum air temperature data from conventional weather
stations for the period from 1961 to 2019 were used, which were
submitted to consistency of these records in order to remove
spurious data. Homogeneous regions were identified through air
temperature using cluster analysis. The time series of maximum and
minimum mean air temperature of the regions were used to identify
the episodes of HW and CW, respectively. The ENSO phases were
identified quarterly using the Oceanic Niņo Index. The analyzes
were performed using descriptive statistics, hypothesis tests and
wavelet transform. The regionalization of 4 groups was adequate,
as it agrees with the thermal, climatological and topographical
characteristics of each area. HW and CW events were more frequent
in the south-central portion of the country, with high interannual
variability in all groups. Statistically significant positive
trends were noted for HW in the tropical region of the country and
negative trends for CW throughout Brazil. Wavelet analysis
indicated the dominant time scale of 4 years for both extremes,
with an increase in HW events during the hot ENSO phase in the
tropical region and a decrease in the subtropical portion, with
the inverse being noted for the CW. It is hoped that these results
can contribute to a better understanding of these temperature
extremes in the country.",
committee = "Reyes Fernadez, Julio Pablo (presidente) and Kayano, Mary Toshie
(orientadora) and Souza, Rita Valeria Andreoli de and Cavalcanti,
Iracema Fonseca De Albuquerque",
englishtitle = "Climatology of heat and cold waves in Brazil and relations with El
Niņo Southern oscillation phases",
language = "pt",
pages = "111",
ibi = "8JMKD3MGP3W34T/46NFL5E",
url = "http://urlib.net/ibi/8JMKD3MGP3W34T/46NFL5E",
targetfile = "publicacao.pdf",
urlaccessdate = "06 maio 2024"
}