NASA Space Apps 2026
Trend Detective
What is changing, where, how much — and is it significant? Choose a place, a NASA variable, a season and a range of years, then test it.
Judge walkthrough
Are summers getting hotter across Spain?
Country-wide mean of NASA POWER cells inside Spain's boundary, June–August daily maximum temperature, 1981–2024. Tip: switch the season to July alone and see the trend stop being significant — a shorter window is noisier.
- 1Question: are summers getting hotter across Spain?
- 2Region: NASA grid cells inside Spain's boundary
- 3Variable & years: Jun–Aug daily maximum temperature, 1981–2024
- 4Build the time series from NASA POWER
- 5Test it: Mann-Kendall, Theil-Sen and a t-test
Watch a demo investigation
1. Where do you want to investigate?
Selected
Dhaka (23.81°, 90.41°)
Area mean averages 9 NASA POWER grid cells (~220 km box). It is not a national average.
2. Detective questions
a) What are you curious about?
b) What kind of place is it?
c) Which time of year?
3. Variable, season and years
Air temperature (2 m): How warm the air is about two metres above the ground — roughly where people stand. (MERRA-2 / GEOS via NASA POWER)