Stable isotope tempestology of tropical cyclones across the North Atlantic and Eastern Pacific Ocean basins

作者：Ricardo Sánchez‐Murillo, Dimitris A. Herrera, Kegan K. Farrick, Germain Esquivel‐Hernández, Rolando Sánchez‐Gutiérrez, Javier Antonio Barberena Moncada, Jorge Guatemala‐Herrera, Yelba Flores‐Meza, Roberto Cerón‐Pineda, Laura Gil‐Urrutia, Jorge Cardona‐Hernández, Tania Peña‐Paz, Junior O. Hernández‐Ortiz, Wendy Harrison‐Smith, Geoffrey Marshall, Aurel Perşoiu, Juan Pérez Quezadas, Miguel A. Mejía‐González, Luis González‐Hita, Marcia Barrera de Calderón, Alejandro García Moya, Debra Hernandez, Kristen Welsh, René M. Price, Diego Riveros‐Iregui, Ny Riavo G. Voarintsoa, Joshua C. Bregy, Minerva Sánchez‐Llull, Carlos Alonso‐Hernández, Saúl Santos‐García, Ana María Durán‐Quesada, Christian Birkel, Jan Boll, K. M. Cobb, Adrián F. Obando‐Amador, Ingrid Vargas-Azofeifa, Doerthe Tetzlaff, Chris Soulsby, Sylvia Dee · 发表于：Annals of the New York Academy of Sciences · 年份：2024 · DOI：10.1111/nyas.15274 · 被引用次数：7 · 研究领域：Tropical and Extratropical Cyclones Research、Coastal wetland ecosystem dynamics、Climate variability and models

Abstract Tropical cyclones (TCs) are one of the major natural hazards to island and coastal communities and ecosystems. However, isotopic compositions of TC‐derived precipitation (P) in surface water (SW) and groundwater (GW) reservoirs are still lacking. We tested the three main assumptions of the isotope storm “spike” hypothesis (sudden spikes in isotopic ratios). Our database covers 40 TCs and is divided into recent ( N = 778; 2012–2023) and archived ( N = 236; 1984–1995) rainfall isotope observations and SW/GW isotope monitoring ( N = 6013; 2014–2023). Seasonal rainfall contribution from TCs ranged from less than 1% to over 54% (4% on average) between 1984 and 2023. Mean δ 18 O compositions across TCs domains were significantly lower than the regional (noncyclonic) δ 18 O mean (−5.24 ± 4.27‰): maritime (−6.29 ± 3.28‰), coastal (−7.78 ± 4.28‰), and inland (−9.80 ± 5.18‰) values. Coastal and maritime TC convection resulted in large rainfall amounts with high isotope compositions. This could bias past climate reconstructions toward unrealistic drier conditions. Significant δ 18 O and d ‐excess differences were found between storm intensities. P/SW and P/GW isotope ratios revealed the rapid propagation of TC excursions in freshwater systems. Our findings highlight the potential of TC isotope observations for diagnosing intensity and frequency in paleoproxies beyond idealized TC models.