Banca de DEFESA: MATHEUS DIAS AGUIAR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MATHEUS DIAS AGUIAR
DATE: 27/02/2024
TIME: 09:00
LOCAL: Uso de Gráfico de Recorrência em análise das series temporais das queimadas em bioma Amazonia
TITLE:

Use of Recurrence Graph in the analysis of the time series of fires in the Amazon biome

KEY WORDS:

Recurrence Plot, Amazon, Fires, Climate.

PAGES: 44
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

The increase in fires activity in the Amazon is a topic of great relevance and concern. Various studies indicate that agricultural intensification and extreme weather conditions such as severe droughts are directly linked to a substantial increase in fires associated with deforestation in the region. This study aims to investigate the temporal variability of fires, establishing correlations with climatic variables in the Amazon biome. To achieve this purpose, the Recurrence Plot (RP), Cross-Recurrence Plot (CRP), Recurrence Quantification Analysis (RQA) and Cross- Recurrence Quantification Analysis (CRQA) methods were used. These methods were developed to analyze the nonlinear dynamics of time series. The studied period is 07/04 2002 – 07/31/2020, the fire data are hot pixels detected by the reference satellite AQUA_M-T, made available by the National Institute for Space Research – INPE, and the data of climate variables (precipitation , maximum temperature, relative humidity and wind speed) are generated from Brazilian Daily Weather Gridded Data (BR-DWGD). The RP/RQA results showed that among the climatic variables, relative humidity presents a more predictable and stable dynamic, while precipitation presents a less predictable and less stable temporal variability. The RQA indices for the fires were closer to the RQA indices for relative humidity. The CRP/CRQA results showed that among the climatic variables, the dynamics of the fires presents a synchronization with relative humidity that is more predictable and more stable, while the synchronization is less predictable and less stable with precipitation. These results highlight the importance of considering not only isolated fire events, but also seasonal climate conditions that can significantly influence fire dynamics in the region.

COMMITTEE MEMBERS:
Externo à Instituição - IKARO DANIEL DE CARVALHO BARRETO - UFPE
Interno - LUCIAN BOGDAN BEJAN
Presidente - TATIJANA STOSIC