Brazil | Jaci, a Supercomputer to Tackle Climate Change Launched

Brazil has launched the Jaci supercomputer in December 2025 to boost climate modelling, weather forecasting, and environmental monitoring in South America, replacing the older Tupã, a tool significantly greater power for more accurate predictions and disaster warnings, aligning with national efforts to tackle climate change, including new national emissions targets and reflecting a strategic commitment to innovation.
 

Inaugurated during the COP30 summit (The 30^th UN Climate Change Conference, held in Belém, Brazil, from November 10 – 21, 2025), Jaci is part of Brazil’s broader plan to modernize its supercomputing infrastructure for better risk management and science - based policymaking, marking a milestone for the country’s scientific sector and a strategic step forward in combating climate change as reported by the Ministry of Science, Technology and Innovation which led the project in partnership with the National Institute for Space Research. 

Jaci’s Key Details: 

•    Name: Jaci (chosen by public vote). 
•    Location: National Institute for Space Research (INPE) in Cachoeira Paulista, São Paulo, Brazil.
•    Purpose: Faster, more detailed weather forecast, advanced climate simulations, and improved natural disaster alerts for South America.
•    Capabilities: Significantly more powerful than its predecessor Tupã, enabling sophisticated models like the MONAN (Ocean, Earth, and Atmosphere Forecast Model).
•    Significance: Supports evidence – based policies, strengthens environmental monitoring, and improves disaster preparedness, especially important for vulnerable regions. 

Context: 

•    Timing: Inaugurated during the COP30 climate summit, emphasising Brazil’s commitment to climate action. 
•    Broader Strategy: Part of the RISC Project (Renewal of INPE’s Supercomputing Infrasructure) to modernize data centres through 2028. 
•    National Goals: Complements Brazil’s updated climate plan, which sets ambitious emissions reduction target for 2030 and 2035. 

Brazil’s Minister of Science, Technology and Innovation, Luciana Santos, highlighting the importance of this investment, emphasised the essential role of cutting - edge technology in addressing climate challenges. 

The Minister stressed that Jaci is one of the most advanced weather and climate forecasting system ever installed in Brazil, the result of approximately US$5.52 million investment by the Ministry of Science, Technology and Innovation (MCTI) that paves the way for a full modernisation of the institute’s data centre, a project worth around US$36.8 million that will include new supercomputers,  upgraded electrical infrastructure, efficient cooling and  a photovoltaic power plant.  

Link 

https://tvbrics.com/en/news/brazil-launches-supercomputer-to-combat-climate-change/