{"publication":"Proceedings of the National Academy of Sciences","corr_author":"1","external_id":{"pmid":["41284872"]},"day":"02","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":122,"date_updated":"2025-12-15T09:21:32Z","license":"https://creativecommons.org/licenses/by/4.0/","has_accepted_license":"1","file":[{"file_id":"20822","content_type":"application/pdf","access_level":"open_access","date_created":"2025-12-15T09:17:33Z","relation":"main_file","file_size":30890293,"date_updated":"2025-12-15T09:17:33Z","creator":"dernst","checksum":"093a8685170e4a1de9176f68ee449493","file_name":"2025_PNAS_Bao.pdf","success":1}],"project":[{"call_identifier":"H2020","grant_number":"101034413","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","name":"IST-BRIDGE: International postdoctoral program"},{"call_identifier":"H2020","grant_number":"805041","_id":"629205d8-2b32-11ec-9570-e1356ff73576","name":"Organization of CLoUdS, and implications of Tropical cyclones and for the Energetics of the tropics, in current and waRming climate"}],"acknowledgement":"J.B. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant (grant agreement No. 101034413). S.B. acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Project Mesoscale organization of tropical convection, grant agreement No 101098063). D.T. acknowledges funding from the Japan Society for the Promotion of Science (JSPS) (Project JSPS Grants-in-Aid for Scientific Research, grant No. JP24K22893). C.M. gratefully acknowledges funding from the ERC under the European Union’s Horizon 2020 research and innovation program (Project organisation of CLoUdS, and implications for Tropical cyclones and for the Energetics of the tropics, in current and in a waRming climate, grant agreement No. 805041). We thank Martin Singh, Steven Sherwood, Bjorn Stevens, and Lokahith Agasthya for helpful discussions. JSPS Core-to-Core Program, “International Core-to-Core Project on Global Storm Resolving Analysis” (Grant Number: JPJSCCA20220001)","author":[{"id":"bb9a7399-fefd-11ed-be3c-ae648fd1d160","last_name":"Bao","full_name":"Bao, Jiawei","first_name":"Jiawei"},{"last_name":"Bony","full_name":"Bony, Sandrine","first_name":"Sandrine"},{"last_name":"Takasuka","first_name":"Daisuke","full_name":"Takasuka, Daisuke"},{"last_name":"Muller","first_name":"Caroline J","orcid":"0000-0001-5836-5350","full_name":"Muller, Caroline J","id":"f978ccb0-3f7f-11eb-b193-b0e2bd13182b"}],"month":"12","OA_place":"publisher","year":"2025","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"department":[{"_id":"CaMu"}],"oa_version":"Published Version","issue":"48","date_published":"2025-12-02T00:00:00Z","type":"journal_article","ec_funded":1,"citation":{"ista":"Bao J, Bony S, Takasuka D, Muller CJ. 2025. Tropics-wide intraseasonal oscillations. Proceedings of the National Academy of Sciences. 122(48), e2511549122.","short":"J. Bao, S. Bony, D. Takasuka, C.J. Muller, Proceedings of the National Academy of Sciences 122 (2025).","ama":"Bao J, Bony S, Takasuka D, Muller CJ. Tropics-wide intraseasonal oscillations. Proceedings of the National Academy of Sciences. 2025;122(48). doi:10.1073/pnas.2511549122","chicago":"Bao, Jiawei, Sandrine Bony, Daisuke Takasuka, and Caroline J Muller. “Tropics-Wide Intraseasonal Oscillations.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2025. https://doi.org/10.1073/pnas.2511549122.","apa":"Bao, J., Bony, S., Takasuka, D., & Muller, C. J. (2025). Tropics-wide intraseasonal oscillations. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2511549122","mla":"Bao, Jiawei, et al. “Tropics-Wide Intraseasonal Oscillations.” Proceedings of the National Academy of Sciences, vol. 122, no. 48, e2511549122, National Academy of Sciences, 2025, doi:10.1073/pnas.2511549122.","ieee":"J. Bao, S. Bony, D. Takasuka, and C. J. Muller, “Tropics-wide intraseasonal oscillations,” Proceedings of the National Academy of Sciences, vol. 122, no. 48. National Academy of Sciences, 2025."},"file_date_updated":"2025-12-15T09:17:33Z","status":"public","article_processing_charge":"Yes (in subscription journal)","ddc":["550"],"OA_type":"hybrid","abstract":[{"lang":"eng","text":"The tropical climate variability is characterized by various oscillations across a range of timescales. Oscillations that imprint the tropical mean state are generally attributed to slow processes, such as the seasonal cycle or interannual variability. Here, we identify a pronounced tropics-wide intraseasonal oscillation (TWISO) in satellite observations and reanalyses. This oscillation, with a period of 30 to 60 d, is evident across multiple variables and involves interactions between convection, radiation, surface fluxes, and large-scale circulation. It is primarily manifested as convective perturbations in the tropical Indo-Pacific warm pool accompanied by oscillations in the large-scale tropical overturning circulation. Here, we examine the relationship between TWISO, the Madden–Julian Oscillation (MJO), and the instability of radiative-convective equilibrium. Certain phases of TWISO coincide with specific phases of the MJO, suggesting a potential connection between the two. However, although the MJO can amplify the oscillation amplitude of TWISO, it is not essential for TWISO to occur. Finally, due to its broad manifestation across the tropics, TWISO potentially exerts widespread influence on tropical weather and climate at regional scales."}],"PlanS_conform":"1","pmid":1,"intvolume":" 122","quality_controlled":"1","publication_identifier":{"eissn":["1091-6490"],"issn":["0027-8424"]},"_id":"20795","title":"Tropics-wide intraseasonal oscillations","language":[{"iso":"eng"}],"publication_status":"published","article_type":"original","scopus_import":"1","article_number":"e2511549122","date_created":"2025-12-11T10:41:13Z","doi":"10.1073/pnas.2511549122","oa":1,"publisher":"National Academy of Sciences"}