On this day in history,...
...in 1985, the Tropical Ocean-Global Atmosphere (TOGA) Program officially began, marking the start of a decade-long international research initiative under the World Climate Research Programme (WCRP). TOGA was designed to improve the understanding of seasonal to interannual climate variability, with a particular focus on the El Niño-Southern Oscillation (ENSO) and its impacts on global weather patterns.

We know that TOGA started in January 1985, but the specific day remains unclear. We have assigned January 2 as a reference date for this milestone, and if anyone has more precise information, we would be happy to update it.
Key Objectives of TOGA:
- Investigate the role of tropical oceans in driving atmospheric variability.
- Improve ENSO prediction capabilities by integrating observational networks, models, and climate data.
- Establish a sustained global ocean observation system, which later became the foundation for modern climate monitoring.
Major Achievements:
- Development of the TOGA-TAO Buoy Array (1985-1994): a network of 70 moored buoys deployed in the equatorial Pacific, providing real-time oceanographic and meteorological data critical for ENSO prediction.
- Advancements in Climate Modeling and Prediction: TOGA contributed to the development of dynamical climate models, enabling the first successful real-time ENSO forecasts in the early 1990s.
- TOGA COARE (Coupled Ocean-Atmosphere Response Experiment, 1992-1993): a major field campaign that enhanced understanding of ocean-atmosphere interactions in the western Pacific warm pool.
TOGA laid the foundation for long-term ocean-climate monitoring and operational ENSO forecasting. Its success led to the establishment of the TOGA Follow-On program, TOGA-TAO, and later the Global Ocean Observing System (GOOS). The knowledge gained from TOGA continues to inform modern climate studies and operational climate prediction systems.
Sources
- McPhaden, M. J. (2003). TOGA: A Personal Perspective. Oceanography, 23(3). tos.org/oceanography/assets/docs/23-3_mcphaden.pdf
- NOAA Climate Program Office: https://www.climate.gov/news-features/blogs/enso/dearest-tao-love-letter-marine-based-observations
- Wikipedia (TOGA Program): en.wikipedia.org/wiki/Tropical_Ocean_Global_Atmosphere_program