High-Frequency Isotope Compositions Reveal Different Cloud-Top and Vertical Stratiform Rainfall Structures in the Inland Tropics of Brazil

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidad de Costa Rica-
Autor(es): dc.contributorUniversity of Texas at Arlington-
Autor(es): dc.creatorSantos, V.-
Autor(es): dc.creatorDurán-Quesada, A. M.-
Autor(es): dc.creatorSánchez-Murillo, R.-
Autor(es): dc.creatorGastmans, D.-
Data de aceite: dc.date.accessioned2025-08-21T15:23:44Z-
Data de disponibilização: dc.date.available2025-08-21T15:23:44Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-08-16-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1029/2024GL109886-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300482-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300482-
Descrição: dc.descriptionUnderstanding the key drivers controlling rainfall stable isotope variations in inland tropical regions remains a global challenge. We present novel high-frequency isotope data (5–30 min intervals) to disentangle the evolution of six stratiform rainfall events (N = 112) during the passage of convective systems in inland Brazil (September 2019–June 2020). These systems produced stratiform rainfall of variable cloud features. Depleted stratiform events (δ18Oinitial ≤ −4.2‰ and δ18Omean ≤ −6.1‰) were characterized by cooler cloud-top temperatures (≤−38°C), larger areas (≥48 km2), higher liquid-ice ratios (≥3.1), and higher melting layer heights (≥3.8 km), compared to enriched stratiform events (δ18Oinitial ≥ −3.8‰ and δ18Omean ≥ −5.1‰). Cloud vertical structure variability was reflected in a wide range of δ18O temporal patterns and abrupt shifts in d-excess. Our findings provide a new perspective to the ongoing debate about isotopic variability and the partitioning of rainfall types across the tropics.-
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.descriptionInternational Atomic Energy Agency-
Descrição: dc.descriptionEnvironmental Studies Center São Paulo State University (UNESP)-
Descrição: dc.descriptionEscuela de Física Centro de Investigación en Contaminación Ambiental Universidad de Costa Rica-
Descrição: dc.descriptionTracer Hydrology Group Department of Earth and Environmental Sciences University of Texas at Arlington-
Descrição: dc.descriptionEnvironmental Studies Center São Paulo State University (UNESP)-
Descrição: dc.descriptionFAPESP: 2018/06666-4-
Descrição: dc.descriptionFAPESP: 2019/03467-3-
Descrição: dc.descriptionFAPESP: 2021/10538-4-
Descrição: dc.descriptionCNPq: 383633/2022-2-
Descrição: dc.descriptionInternational Atomic Energy Agency: CRP-F31006-
Idioma: dc.languageen-
Relação: dc.relationGeophysical Research Letters-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectstable isotopes-
Palavras-chave: dc.subjectstratiform rainfall-
Palavras-chave: dc.subjecttropical inland-
Título: dc.titleHigh-Frequency Isotope Compositions Reveal Different Cloud-Top and Vertical Stratiform Rainfall Structures in the Inland Tropics of Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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