Título:	Water resources monitoring in a remote region: earth observation-based study of endorheic lakes
Autor(es):	Garnier, Jeremie Cicerelli, Rejane Ennes Almeida, Tati de Belo, Julia C. R. Curto, Julia Barbosa Ramos, Ana Paula Marques Valadão, Larissa Vieira Satge, Frederic Bonnet, Marie-Paule
ORCID:	https://orcid.org/0000-0001-9571-7933 https://orcid.org/0000-0002-8199-5163 https://orcid.org/0000-0002-6387-8254 https://orcid.org/0000-0001-6633-2903 https://orcid.org/0000-0002-8961-9517 https://orcid.org/0000-0002-3950-4041
Afiliação do autor:	University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change” University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics São Paulo State University (Unesp), Department of de Cartography Roberto Simonsen University of Brasilia, Geoscience Institute, Graduate Program in Geology and in Applied Geosciences and Geodynamics UnB/IRD, Joint International Laboratory LMI OCE “Observatory of Environmental Change” University of Montpellier, French National Research Institute for Sustainable Development (IRD)—UMR Espace-DEV Joint International Laboratory LMI OCE “Observatory of Environmental Change”, UnB/IRD, Brasilia 71750-000, DF, Brazil University of Montpellier, French National Research Institute for Sustainable Development (IRD)—UMR Espace-DEV University of Brasilia, Center of Sustainable Development (CDS)
Data de publicação:	30-Jul-2024
Editora:	MDPI AG
Referência:	GARNIER, Jeremie et al. Water resources monitoring in a remote region: earth observation-based study of endorheic lakes. Remote Sensing, [S. l.], v. 16, n. 15, 2790, 2024. DOI: https://doi.org/10.3390/rs16152790. Disponível em: https://www.mdpi.com/2072-4292/16/15/2790. Acesso em: 10 ago. 2026.
Abstract:	In the western Andes, climate changes have led to drastic ecological changes during the Pleistocene and Holocene. Given the debate surrounding precipitation pattern changes and the lack of research on lakes in the Chilean Altiplano, this study aims to assess recent climate changes. The paper presents an innovative methodology based on Google Earth Engine (GEE), utilizing fluctuations in water levels in endorheic lakes as natural precipitation indicators. Three lakes (Chungará, Miscanti, and Miniques) in isolated drainage systems were studied, where changes in water levels directly reflect rainfall variations. Data from Landsat-OLI 8, Landsat-ETM+, Landsat-TM 5, and MODIS spanning 31 years were processed using the Google Earth Engine platform. The shapes of the water bodies were extracted using hue saturation value (HSV) composites. The surface areas of the lakes were compared with precipitation data from national meteorological stations and the Tropical Rainfall Measuring Mission (TRMM) using linear regression analyses. Both lake area and rainfall volume showed a decrease over time, with varying trends depending on environmental conditions. However, the analysis consistently indicates a reduction in the area and volume of Chilean lakes corresponding to observed rainfall patterns over the past three decades.
Unidade Acadêmica:	Instituto de Geociências (IG)
Licença:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).
DOI:	https://doi.org/10.3390/rs16152790
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