Study of water storage variations at the Pantanal wetlands area from GRACE monthly mass grids

AYELEN PEREIRA; CECILIA CORNERO; MARÍA CRISTINA PACINO; ANA CRISTINA OLIVEIRA CANCORO DE MATOS; DENIZAR BLITZKOW

Copenhague

Simposio; Simposio Internacional de la IAG, Gravedad, geoide y Sistemas de Alturas GGHS; 2018

IAG International Association of Geodesy

NOTA: SE ADJUNTA EL POSTER QUE DIO ORIGEN AL ARTICULO PUBLICADO EN 2019The natural heritage of biodiversity of the Paraguay river basin is subject to potential impacts due to climate change. The Pantanal, located within this basin, is one of the world´s largest and most important wetlands because of the wealth of wildlife and the environmental services that provides.To monitor these environments at large spatial scales, the satellite gravity mission GRACE (Gravity Recovery And Climate Experiment) provided until 2017 time-variable Earth?s gravity field models that reflected the variations due to mass transport processes, like continental water storage changes. The purpose of this work is to analyze the spatial and temporal water storage variations for the period 2002-2017 using the monthly land water mass grids of Total Water Storage (TWS) derived from the CSR GRACE solutions at the Pantanal region.The comparison of the TWS with river gauge and precipitation data at different stations distributed over the Pantanal area was carried out. In order to validate the satellite results, the correlation analysis between the water mass changes and river gauge/precipitation measurements was obtained, and the phase differences for the studied variables were also evaluated. Moreover, the groundwater storage derived from GRACE solutions in the wetland?s area was analyzed.Preliminary results presented high correlations at the north, and lower ones towards the south of the Pantanal, which are mainly related to the hydrogeological domains of the area.