Banca de QUALIFICAÇÃO: RENATA BARROS VASCONCELOS LEIRIAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : RENATA BARROS VASCONCELOS LEIRIAS
DATE: 26/10/2021
TIME: 13:00
LOCAL: VIDEOCONFERÊNCIA
TITLE:

Impacts of Mesoscale Convective Complexes on Aircraft

KEY WORDS:

Mesoscale Convective Complex; air accidents, incidents
flight safety, cyclogenesis.

PAGES: 104
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Meteorologia
SUMMARY:

While the number of air accidents and incidents is decreasing over the years due to the increase
in aviation technology; statistics show that such undesirable episodes have increased worldwide
due to meteorological phenomena and the lack of understanding of them. Among these
phenomena are the mesoscale convective complexes (MCC); they have a great impact on flight
safety, as they are predominantly nocturnal phenomena and difficult to be detected by in-flight
pilots (only partially perceptible by the meteorological radars on board the aircraft), they are
phenomena of rapid formation and development and of great destruction capacity. They have a
large space coverage and are extremely harmful to flight safety. In some situations, there is a
junction, an agglomeration of MCC, forming an almost impenetrable wall for aircraft in flight.
Through the serious consequences of the aircraft and flight safety, in an episode that occurred on
October 31, 2018, involving a commercial aircraft, on a flight between São Paulo and Santiago,
it was necessary to study the atmosphere, at low, medium and high levels , first on a global scale
and later on a synoptic scale, to understand the triggers that influenced a significant event. The
aircraft, after encountering MCC clusters, had severe damage to its fuselage and was unable to
continue the flight safely, requiring an emergency landing. This event occurred in southern
Brazil, a region with a high incidence of cyclogenesis. After analyzing the entire atmosphere
profile through satellite images, reanalysis data and weather messages from surrounding
aerodromes to the event, a table was created, with all the processes found and that influenced the
formation and development of MCC and later its agglomeration; analyzing the cyclogenetic
processes at low, medium and high meteorological levels, as a way to facilitate the entire public
involved in meteorology and flight safety. The preparation of the table, after case analysis, will
serve quickly and concisely, for meteorologists, pilots and flight dispatchers, as a way to
facilitate future analyzes and prognoses, highlighting the main variables to be analyzed in the
atmosphere for a given time of year, thus contributing to safety decisions regarding the
preparation, dispatch and execution of a flight for the geographic region under study.

BANKING MEMBERS:
Externo à Instituição - EDSON CABRAL
Interno - 4421297 - HELIOFABIO BARROS GOMES
Presidente - 1099304 - NATALIA FEDOROVA