TerraTrend: Earth System Trend Detective

01

Select the Variable

Choose from variables measured by NASA missions or produced by Earth science models: CO2, sea level, ice mass, temperature, wildfire risk or groundwater.

02

Fetch the Data

Live data is pulled from NOAA GML and Open-Meteo ERA5 APIs where available. When APIs are offline, curated real-measurement archives are served instead, always clearly labelled.

03

Test for Significance

The Mann-Kendall test, the non-parametric method Earth scientists use, computes S, Z, a p-value and Sen's slope. A trend is reported significant only when p < 0.05.

04

Pin It to Earth

Every confirmed trend is anchored to the exact place where it is measured. Click anywhere on the globe to surface the regional trend at that coordinate.

TERRATREND

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