Unprecedented suppression of Panama's Pacific upwelling in 2025
成果类型：
Article
署名作者：
O'Dea, Aaron; Sellers, Andrew J.; Perez- Medina, Carmen; Diaz, Javier Pardo; Bloise, Alexandra Guzman; Pohlker, Christopher; Chilinski, Michal T.; Aardema, Hedy M.; Cybulski, Jonathan D.; Heins, Lena; Paton, Steven R.; Slagter, Hans A.; Schiebel, Ralf; Haug, Gerald H.
署名单位：
Smithsonian Institution; Smithsonian Tropical Research Institute; Secretaria Nacional de Ciencia, Tecnologia e Innovacin (SENACYT); Max Planck Society; University of Warsaw; Max Planck Society; University of Hong Kong
刊物名称：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN/ISSBN：
0027-15217
DOI：
10.1073/pnas.2512056122
发表日期：
2025-09-09
关键词：
摘要：
The Gulf of Panama's (GOP) seasonal upwelling system has consistently delivered cool, nutrient-rich waters via northerly trade winds every January-April for at least 40 y. Here, we document the failure of this normally highly predictable phenomenon in 2025. Data suggest that the cause was a reduction in Panama wind-jet frequency, duration, and strength, possibly related to the Intertropical Convergence Zone (ITCZ) position during the 2024-2025 La Ni & ntilde;a, though the mechanisms remain unclear. Nevertheless, the consequences are likely significant, including decreases in fisheries productivity and exacerbated thermal stress on corals that typically benefit from upwelling's cooling. This event underscores how climate disruption can threaten wind-driven tropical upwelling systems, which remain poorly monitored and studied despite their importance to ecology and coastal economies.