Banca de QUALIFICAÇÃO: FLAVIA FABIANE GOMES DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : FLAVIA FABIANE GOMES DA SILVA
DATE: 30/06/2026
TIME: 09:00
LOCAL: Google Meet
TITLE:

Impacts of ENSO Events on Evapotranspiration in the Cerrado Biome Using the geeSEBAL-MODIS Algorithm

KEY WORDS:

Evapotranspiration; Remote Sensing; ENSO; geeSEBAL; Cerrado

PAGES: 30
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Meteorologia
SPECIALTY: Meteorologia Aplicada
SUMMARY:

This study aims to estimate and analyze actual evapotranspiration in the Cerrado Biome under different phases of the El Niño–Southern Oscillation (ENSO), using remote sensing data and the geeSEBAL algorithm. Evapotranspiration is one of the main components of the hydrological cycle and is directly influenced by climatic conditions and water availability, especially in seasonally dry tropical regions such as the Cerrado. The methodology is based on the surface energy balance, in which evapotranspiration is obtained from the equation ET = (Rn − G − H)/λ, where Rn represents net radiation, G is the soil heat flux, H is the sensible heat flux, and λ is the latent heat of vaporization. Orbital products from the MODIS sensor will be used, including land surface temperature, vegetation index (NDVI), and albedo, as well as auxiliary meteorological data. The anomaly analysis will be conducted based on the difference between observed values and the climatological mean, allowing the assessment of deviations associated with El Niño, La Niña, and neutral conditions. Spatial and temporal patterns of evapotranspiration associated with ENSO events are expected to be identified, with possible reductions during El Niño periods and increases during La Niña. The results will contribute to the understanding of the hydrological dynamics of the Cerrado, providing support for environmental planning, water resources management, and decision-making in the agricultural sector under climate variability scenarios.

COMMITTEE MEMBERS:
Presidente - 3421257 - VANESSA DE ARRUDA SOUZA
Externo à Instituição - ANDERSON RUHOFF - UFRGS
Externo à Instituição - MICHEL BAPTISTELLA STEFANELLO - UFSM
Externo à Instituição - MARCEL CARVALHO ABREU