Atmosphere (Nov 2023)

Seasonality of Biophysical Parameters in Extreme Years of Precipitation in Pernambuco: Relations, Regionalities, and Variability

  • Alan Cézar Bezerra,
  • Jhon Lennon Bezerra da Silva,
  • Douglas Alberto de Oliveira Silva,
  • Cristina Rodrigues Nascimento,
  • Eberson Pessoa Ribeiro,
  • Josiclêda Domiciano Galvincio,
  • Marcos Vinícius da Silva,
  • Henrique Fonseca Elias de Oliveira,
  • Márcio Mesquita,
  • José Francisco de Oliveira-Júnior,
  • Alexsandro Claudio dos Santos Almeida,
  • Pabrício Marcos Oliveira Lopes,
  • Geber Barbosa de Albuquerque Moura

DOI
https://doi.org/10.3390/atmos14121712
Journal volume & issue
Vol. 14, no. 12
p. 1712

Abstract

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This study analyzed the seasonality of biophysical parameters in the extreme years of precipitation and the relationship with the monthly precipitation of the state of Pernambuco at the regional level (Pernambuco) and homogeneous precipitation zones: zone 1—semiarid, zone 2—transition and zone 3—coastal. For this, the biophysical parameters at the monthly level in the extreme years, 2004 (wet) and 2012 (dry) were related to precipitation data of 45 rainfall stations. Using the Google Earth Engine platform, we calculate the biophysical parameters with MODIS products: Albedo, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Soil Adjusted Vegetation Index (SAVI), Normalized Difference Water Index (NDWI) and surface temperature (ST). Considering the most critical period, between September and December, of a wet year (2004) with a dry year (2012), there is an average reduction of 14% of vegetation indices (NDVI, EVI and SAVI), a 60% reduction in NDWI, an increase of 4% in albedo and 3% in surface temperature. For monitoring the water conditions of the state of Pernambuco, the most appropriate biophysical parameter is the NDWI index and surface temperature. In addition to NDWI, it is recommended to use EVI for semiarid areas (zone 1) and ST for coastal areas (Zones 2 and 3).

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