DROUGHT MONITORING IN 2011/2012 FOR THE BRAZILIAN NORTHEAST BASED ON THE SATELLITE SPOT-VEGETATION AND TRMM - DOI: 10.13083/1414-3984.v22n03a03

Authors

  • Janice Freitas Leivas
  • Ricardo Guimarães Andrade
  • Daniel de Castro Victoria
  • Fabio Enrique Torresan
  • Edson Luis Bolfe

DOI:

https://doi.org/10.13083/reveng.v22i3.454

Keywords:

Análise espaço-temporal, geotecnologia, eventos extremos

Abstract

Drought affects several parts of the globe and causes negative social, economic and environmental effects. The aim of this study was to assess the performance of the Standardized Vegetation Index (PVI) obtained from the NDVI (Normalized Difference Vegetation Index) for ten days of SPOT-Vegetation satellite, for monitoring drought in northeast Brazil based on the historical series from 1998 to 2012. In order to verify the results, rainfall data obtained from the TRMM satellite (Tropical Rainfall Measuring Mission) from March 2011 to March 2012 was standardized. As of December 2011, it was observed that rainfall was below normal for most of the northeast, resulting in a decrease in IVP for the entire area under study. Factors such as positioning of the Intertropical Convergence Zone and El Niño influence rainfall in the region. The results are satisfactory, indicating the occurrence of severe drought in Northeast Brazil since January 2012. IVP variability was observed along with delay in vegetation response to rainfall estimates based on the TRMM. The analyses confirmed that the IVP was efficient for drought monitoring in northeastern Brazil.

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Published

2014-07-02

How to Cite

Leivas, J. F., Andrade, R. G., Victoria, D. de C., Torresan, F. E., & Bolfe, E. L. (2014). DROUGHT MONITORING IN 2011/2012 FOR THE BRAZILIAN NORTHEAST BASED ON THE SATELLITE SPOT-VEGETATION AND TRMM - DOI: 10.13083/1414-3984.v22n03a03. Engineering in Agriculture, 22(3), 211–221. https://doi.org/10.13083/reveng.v22i3.454

Issue

Vol. 22 No. 3 (2014)

Section

Agricultural Meteorology

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