How Supercomputers Are Transforming Climate Science and Astronomy

This episode of ‘Tech Now’ delves into the pivotal role of supercomputers in addressing global scientific challenges, focusing on climate research and the exploration of the cosmos. Paul Carter visits the Swiss city of Lugano, home to the ALPS supercomputer, one of the world’s most advanced high-performance computing systems. ALPS is not only remarkable for its processing power-equivalent to thousands of high-end laptops-but also for its sustainable cooling system, which utilizes glacial water from Lake Lugano. This eco-friendly approach allows the supercomputer to handle the immense heat generated by its processors while minimizing environmental impact. By processing vast amounts of environmental data, ALPS enables scientists to model and predict climate phenomena such as sea level rise, glacial retreat, and extreme weather events. These simulations, impossible on standard computers, help researchers understand the potential impacts of rising CO2 levels and other climate variables on a global scale. The episode also highlights the Vera C. Rubin Observatory in Chile, which will soon operate the world’s largest digital camera to survey the southern sky over a decade. The observatory will generate enormous datasets-about 20 terabytes per night-requiring advanced computing and artificial intelligence for analysis. Much of this data will be stored and processed at the University of Edinburgh, supporting breakthroughs in astronomy, such as the discovery of millions of new asteroids and comets. The program underscores how the synergy between supercomputing and scientific research is driving new insights into both our planet and the universe, setting standards for sustainable technology and data-driven discovery.