M2 monthly and annual mode-1 and mode-2 internal tide atlases from altimetry data and MIOST: focus on the Indo-Philippine archipelago and the region off the Amazon shelf

Tchilibou, Michel; Barbot, Simon; Carrere, Loren; Koch-Larrouy, Ariane; Dibarboure, Gérald; Ubelmann, Clément

doi:https://doi.org/10.5194/os-21-1469-2025

Articles | Volume 21, issue 4

https://doi.org/10.5194/os-21-1469-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-21-1469-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 4

Research article

|

23 Jul 2025

Research article |

| 23 Jul 2025

M2 monthly and annual mode-1 and mode-2 internal tide atlases from altimetry data and MIOST: focus on the Indo-Philippine archipelago and the region off the Amazon shelf

Michel Tchilibou, Simon Barbot, Loren Carrere, Ariane Koch-Larrouy, Gérald Dibarboure, and Clément Ubelmann

Data sets

Global Ocean Physics Reanalysis Copernicus https://doi.org/10.48670/moi-00021

Global Ocean Along Track L3 Sea Surface Heights Copernicus https://doi.org/10.48670/moi-00146

Short summary

MIOST24 (Multivariate Inversion of Ocean Surface Topography 2024) annual and monthly internal tide (IT) atlases, based on 25 years of altimetry data and an updated wavelength database, are presented for the Indo-Philippine archipelago and the Amazon shelf. The atlases show monthly IT variability and a better correction of IT in altimetry data than with MIOST22 (MIOST 2022) and HRET (High-Resolution Empirical Tide). The results support the development of a global MIOST24.