The 2022-23 drought in the South American Altiplano: ENSO effects on moisture flux in the western Amazon during the pre-wet season

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Autor(es): dc.contributorUniversidad Nacional Agraria La Molina-
Autor(es): dc.contributorIGE-
Autor(es): dc.contributor(PUCP)-
Autor(es): dc.contributorServicio Nacional de Meteorología e Hidrología-
Autor(es): dc.contributorInstituto de Hidráulica e Hidrología-
Autor(es): dc.contributorNational Center for Monitoring and Early Warning of Natural Disasters/CEMADEN-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorGraduate School of International Studies. Korea University-
Autor(es): dc.creatorGutierrez-Villarreal, Ricardo A.-
Autor(es): dc.creatorEspinoza, Jhan-Carlo-
Autor(es): dc.creatorLavado-Casimiro, Waldo-
Autor(es): dc.creatorJunquas, Clémentine-
Autor(es): dc.creatorMolina-Carpio, Jorge-
Autor(es): dc.creatorCondom, Thomas-
Autor(es): dc.creatorMarengo, José A.-
Data de aceite: dc.date.accessioned2025-08-21T18:53:16Z-
Data de disponibilização: dc.date.available2025-08-21T18:53:16Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.wace.2024.100710-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/306147-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/306147-
Descrição: dc.descriptionThe 2022-23 hydrological year in the Lake Titicaca, Desaguadero River, and Lake Poopó hydrological system (TDPS) over the South American Altiplano constituted a historically dry period. This drought was particularly severe during the pre-wet season (October–December), when the TDPS and the adjacent Andean-Amazon region experienced as much as 60% reductions in rainfall. Consequently, Titicaca Lake water levels decreased by 0.05 m from December to January, which is part of the rising lake level period of normal conditions. Such conditions have not been seen since the El Niño-related drought of 1982-83. Using a set of hydroclimatic, Sea Surface Temperature (SST) and atmospheric reanalysis datasets, we find that this new historical drought was associated with enhanced southerly moisture flux anomalies, reducing the inflow of moisture-laden winds from the Amazon basin to the TDPS. Such anomalies in moisture transport were not seen since at least the 1950s. The atmospheric dynamics associated with this drought are related to La Niña SST anomalies via subtropical teleconnections associated with Rossby wave trains towards South America, further extended by subtropical Atlantic Ocean SST anomalies. This feature reduced the atmospheric moisture inflow from the Amazon and weakened the development of the Bolivian High in the upper troposphere. These results document a new atmospheric mechanism related to extreme droughts in the TDPS associated with La Niña SST anomalies during the pre-wet season. This goes beyond the traditional understanding of El Niño events, especially the strongest ones, being associated with dry conditions in the TDPS during the wet season (December–March).-
Descrição: dc.descriptionAgence Française de Développement-
Descrição: dc.descriptionInstitut de Recherche pour le Développement-
Descrição: dc.descriptionInstitute of Science and Technology Austria-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionEscuela de Posgrado Universidad Nacional Agraria La Molina-
Descrição: dc.descriptionUniv. Grenoble Alpes IRD CNRS INRAE Grenoble-INP IGE-
Descrição: dc.descriptionInstituto de Investigación sobre la Enseñanza de las Matemáticas Pontificia Universidad Católica del Perú (PUCP)-
Descrição: dc.descriptionServicio Nacional de Meteorología e Hidrología-
Descrição: dc.descriptionUniversidad Mayor de San Andrés Instituto de Hidráulica e Hidrología-
Descrição: dc.descriptionNational Center for Monitoring and Early Warning of Natural Disasters/CEMADEN-
Descrição: dc.descriptionGraduate Program in Natural Disasters UNESP/CEMADEN-
Descrição: dc.descriptionGraduate School of International Studies. Korea University-
Descrição: dc.descriptionGraduate Program in Natural Disasters UNESP/CEMADEN-
Descrição: dc.descriptionFAPESP: 2014/50848-9-
Descrição: dc.descriptionCNPq: 465501/2014-1-
Descrição: dc.descriptionCAPES: 88887.136402/2017-00-
Idioma: dc.languageen-
Relação: dc.relationWeather and Climate Extremes-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDesaguadero river and lake Poopó hydrological system-
Palavras-chave: dc.subjectDrought –climate variability-
Palavras-chave: dc.subjectEl Niño Southern Oscillation-
Palavras-chave: dc.subjectLake Titicaca-
Palavras-chave: dc.subjectSouth American Altiplano-
Título: dc.titleThe 2022-23 drought in the South American Altiplano: ENSO effects on moisture flux in the western Amazon during the pre-wet season-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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