Name: Wesley de Souza Campos Correa
Type: PhD thesis
Publication date: 17/03/2020
Advisor:

Namesort descending Role
Cláudia Câmara do Vale Advisor *

Examining board:

Namesort descending Role
Alexandre Magalhães Santiago External Examiner *
Cláudia Câmara do Vale Advisor *
Edson Soares Fialho Internal Examiner *
Maria Elisa Siqueira da Silva External Examiner *
Taciana Toledo de Almeida Albuquerque External Examiner *

Summary: The Metropolitan Region of Greater Vitória (RMGV) is the most industrialized and
urbanized area of the state of Espírito Santo. This whole process has led to changes
in the local atmospheric circulation, such as the formation and intensification of the
urban heat island (ICU). Therefore, the main objective of this research was to study
the atmospheric impact due to the alteration of land use and coverage in the Greater
Vitória Metropolitan Region. This research will be developed in two stages: the first
will be the ICU observational study and the second will be the use of atmospheric
numerical modelling, using the Weather Research and Forecasting (WRF) model
coupled with the Building Effect Parameterization (BEP) model. The analysis of
observational data shows that the maximum hourly intensity of ICU
at RMGV was 7.35 ° C at 14h in October 2017 and 7.53 ° C at 15h in January 2018.
Despite the values Often, the heat island in the RMGV is less intense than in high
and medium latitude areas. It was also observed that the heat island is more intense
during the day, in summer, and is associated with the time of higher magnitude of
thermal load available in the environment and not that stored by the urban fabric.
From the LANDSAT-8 satellite images, it was found that the surface intensities and
spatial extensions of the ICU in the RMGV reach extremes -3 ° C to + 20 ° C,
presenting an amplitude of + 17 ° C. Values between + 2 ° C to + 8 ° C comprise the
largest area, and in urban areas, values of intensity + 5 ° C are commonly recorded.
The effects of urbanization in the simulations performed with the WRF-BEP model
show that the heat island provided an average 5 ° C increase in air temperature,
corroborated by the increase in sensible heat flow and reduction of latent heat, as
well as, favoured an increase of Bowen's ratio up to 10 times. The heat island also
favored an increase in the convergence of air at the edges of the RMGV, making the
breeze arrive until one hour earlier, on 10/30 at 9am. With the presence of the city,
the sea breeze was stagnant on the coast during the day.

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