ASSESSMENT OF HYDROLOGICAL MASS LOSSES IN THE NORTHEAST ATLANTIC EASTERN HYDROGRAPHIC REGION, BRAZIL

Authors

  • Fábio Vinícius Marley Santos Lima Universidade Federal de Pernambuco, Programa de Pós-Graduação em Ciências Geodésicas e Tecnologias da Geoinformação, Recife - PE, Brasil. http://orcid.org/0000-0001-6799-5733
  • Rodrigo Mikosz Gonçalves Universidade Federal de Pernambuco, Programa de Pós-Graduação em Ciências Geodésicas e Tecnologias da Geoinformação, Recife - PE, Brasil. http://orcid.org/0000-0002-5066-1910
  • Henry Diverth Montecino Castro Universidade de Concepción, Departamento de Ciências Geodésicas e Geomática. Los Angeles Chile. http://orcid.org/0000-0002-1795-8720
  • Raquel Arcoverde Vila Nova Universidade Federal de Pernambuco, Programa de Pós-Graduação em Ciências Geodésicas e Tecnologias da Geoinformação, Recife - PE, Brasil. http://orcid.org/0000-0003-2055-0387

Keywords:

Drought, GRACE (Gravity Recovery and Climate Experiment), NDVI (Normalized Difference Vegetation Index), SPI (Standardized Precipitation Index), TWS (Total Water Storage).

Abstract

Freshwater monitoring globally is fundamental to support decision-making. However, long-term hydrological data for some regions are lacking due to limited of observational networks. Remote sensing products come to aggregate the in situ observations and overcome obstacles about data availability. This study assesses the hydrological mass losses in the Northeast Atlantic Eastern Hydrographic Region (NAEHR) in Brazil through temporal data sources. GRACE RL06 Mascon solutions, reservoirs volume, vegetation index and rainfall stations are used. The results confirm the cohesion between the TWS variations with water volume and NDVI, obtaining a strong correlation of 0.78 and 0.77 respectively. The Standardized Precipitation Index scales (12, 24 and 36 months) showed a moderate and strong correlation with the TWS of 0.57, 0.73 and 0.72 respectively and identified the last regional severe drought from 2012 to 2017. The NEAHR is located almost entirely in the Brazilian semiarid region, comprises about 24 million inhabitants, it is high vulnerable to drought, thus justifying the importance of monitoring its water resources availability.

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Published

2020-11-17

How to Cite

Lima, F. V. M. S., Gonçalves, R. M., Castro, H. D. M., & Nova, R. A. V. (2020). ASSESSMENT OF HYDROLOGICAL MASS LOSSES IN THE NORTHEAST ATLANTIC EASTERN HYDROGRAPHIC REGION, BRAZIL. Bulletin of Geodetic Sciences, 26(3). Retrieved from https://revistas.ufpr.br/bcg/article/view/77930

Issue

Vol. 26 No. 3 (2020)

Section

Article

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