Space Apps 2026: Be an Earth System Trend Detective

The challenge asks what is changing in NASA Earth data, where, by how much, and whether the change is real. Main features: Trend Check (16 measures, 7,342 places, a per-decade change with a 95% interval, two tests that must agree, false-discovery correction); the Earth Pulse globe (a global significance map); the Predictions globe (city weather, climate and renewable outlooks); and Cool Charlotte (where new trees help most). Every rainfall trend, from NASA POWER or GPM satellites, is checked against NASA’s other rainfall records over the same years, and a “Yes” needs them to agree. NASA POWER is a reanalysis and can miss city effects, so Ground check compares it with real stations. No account is needed.

For Space Apps Charlotte and the Bosch Invented for Life award, Cool Charlotte uses forty years of Landsat surface temperature to rank where new trees would help the most people. This is an independent project, not an official NASA service.

Continue exploring

• City predictions: weather, climate and renewable resources
• Privacy
• Find the change. Test the evidence.
• Trend Check: is it really changing?
• Global climate atlas
• Explore the evidence
• How the analysis works
• Data sources
• Earth Pulse: where is our planet changing?
• Ground check: does NASA's record match a real thermometer?
• Cool Charlotte: where to plant trees first
• Future Cities: 20 cities toward 2050 in 3D