Earth Trend Detective

Explore local NASA IMERG precipitation, select regions on a map and compare accumulated rainfall. Google Earth Engine is an optional alternative. Trends are exploratory, not climate-change attribution.

Compare A | B

Turn on Compare A | B to put two places, two periods or two data sources side by side.

Panel A

Data source

No automatic provider substitution. Daily and monthly products are not assumed equivalent.

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Click the map to pick a point.

StateMunicipality

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Precipitation map layerShow accumulated precipitation (local daily product)

Map fromMap to

latitudelongitude

Time and analysis

Start dateEnd date

FrequencyRemove monthly seasonality

At least two Final observations per calendar month are required. The API verifies actual coverage; Late never enters the baseline.

Select a location and period, then analyze panel A. Results are cleared when settings change.

Measures

Choose a question; each answer carries its uncertainty, its test and a confidence level set by how many complete years support it. Measures always use the bundled local NASA files (monthly 1998→ or daily Final 2014→), whatever the data source above.