
Switzerland Quietly Downloads the American Climate Legacy
Fearing political volatility in Washington, ETH Zurich is hoarding 140 petabytes of US environmental data in a Swiss supercomputer vault.

Lugano is usually known for its mild climate and discreet banking, but it has recently become the vault for a different kind of asset. Researchers at ETH Zurich have quietly transferred one hundred petabytes of climate and Earth observation data from NASA servers to the Swiss National Supercomputing Centre. To put this digital hoarding into perspective, the archive equals roughly twenty million feature films. It encompasses half a century of meticulous American data collection on greenhouse gases, cloud formations, and shrinking ice shields.
The official rationale for this transatlantic data migration is technological progress. The Swiss federal institute wants to feed this vast historical record into its artificial intelligence models. Thomas Zurbuchen, the former NASA science director who now teaches at ETH Zurich, spearheaded the initiative. The goal is to generate highly precise forecasts for weather patterns and natural hazards. For a wealthy, mountainous nation naturally obsessed with predicting glacier collapses and landslides, acquiring the best possible raw material makes perfect economic sense.
Storing and processing such an immense volume of information requires infrastructure that few countries can casually provide. Switzerland, naturally, has built exactly that. The data now resides alongside the Alps supercomputer in Lugano. According to Thomas Schulthess, the director of the supercomputing centre, having the NASA archive physically adjacent to what he considers the world's most powerful machine dramatically simplifies the development of complex climate models. The Swiss are not stopping at space agency records, either. Another forty petabytes of meteorological data from the US agency NOAA are scheduled to make the journey across the Atlantic in the coming months.
Yet beneath the veneer of pure scientific optimization lies a distinct political anxiety. The transfer functions as a massive, state-funded insurance policy against the perceived volatility of American domestic politics. Zurbuchen has explicitly cited the current budget-cutting environment in Washington and uncertainties surrounding the Trump administration as personal motivations for the project. The fear among researchers is that publicly funded climate records might suddenly disappear behind paywalls or be scrubbed entirely from federal servers.
Climate scientist Katharine Hayhoe views the Swiss initiative as a crucial public service, arguing that the scientific community can no longer assume US government data will remain indefinitely accessible. The irony, of course, is that there is currently zero evidence of the Trump administration actually deleting any NASA archives. The Swiss scientific establishment has simply decided that hoping for the best is not a viable strategy. Flush with resources and armed with formidable computing power, Switzerland is quietly downloading the American scientific legacy, just in case.
Written by Freya Stensrud freya.stensrud@alpineweekly.com




