@Article{CostaBaGoSiRoSaHe:2020:AnClEx,
author = "Costa, Rafaela Lisboa and Baptista, Gustavo Macedo de Mello and
Gomes, Heliofabio Barros and Silva, Fabr{\'{\i}}cio Daniel dos
Santos and Rocha J{\'u}nior, Rodrigo Lins da and Salvador, Mozar
de Ara{\'u}jo and Herdies, Dirceu Lu{\'{\i}}s",
affiliation = "{Universidade Federal de Alagoas (UFAL)} and {Universidade de
Bras{\'{\i}}lia (UnB)} and {Universidade Federal de Alagoas
(UFAL)} and {Universidade Federal de Alagoas (UFAL)} and
{Universidade Federal de Alagoas (UFAL)} and {Instituto Nacional
de Meteorologia (INMET)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Analysis of climate extremes indices over northeast Brazil from
1961 to 2014",
journal = "Weather and Climate Extremes",
year = "2020",
volume = "28",
pages = "e100254",
month = "June",
keywords = "Trends, Temperature, Rainfall, Regional and sub-regional analysis,
CLIMDEX.",
abstract = "An analysis of climate extremes indices was conducted for maximum
temperatures (TMax), minimum temperatures (TMin), and daily
rainfall data (PRCP) over the northeast region of Brazil for the
period of 19612014. The indices were calculated for 96 weather
stations using RClimDex software in a sub-regional study based on
cluster analysis, as well as for each individual weather station,
after a rigorous process of quality control, gap filling of
missing values, and homogenization. The Mann-Kendall
non-parametric trend test was employed to assess the statistical
significance of the series. The results indicate unequivocal signs
of heating. In the past decades, there were predominant trends of
decrease in the percentage of cold nights ( 8.4% days/decade),
increase in the percentage of the number of warm nights (10.6%
days/decade), increase in the number of days per decade in which
the minimum temperature exceeded the threshold of 20 \�C,
and a trend showing an increase in heat waves. This was
corroborated by the declining trend in the number of consecutive
days in which TMin did not exceed the 10th percentile, and the
increase in the number of consecutive days in which TMax exceeded
the 90th percentile in the data distribution. With regard to PRCP,
in most weather stations where there is a significant increase in
consecutive dry days, there is also a trend of significant
increase in consecutive wet days, thereby intensifying the
seasonality, with the dry seasons becoming drier and the rainy
seasons wetter. In most weather stations, a reduction was found in
the total annual precipitation and in the frequency of rainy days.
Moreover, in many stations, an increase in rainfall events that
surpasses the threshold of 95% and 99% in the distribution was
discovered. These factors highlight concerns of a region of Brazil
marked by the scarcity of perennial water resources and the threat
of desertification.",
doi = "10.1016/j.wace.2020.100254",
url = "http://dx.doi.org/10.1016/j.wace.2020.100254",
issn = "2212-0947",
language = "en",
targetfile = "costa_analysis.pdf",
urlaccessdate = "27 abr. 2024"
}