Buenos Aires: land change, 2015–2025
Two Sentinel-2 satellite images of a 20 km square around Buenos Aires, from 2015-12-11 and 2025-01-12, were classified by a ResNet18 model trained on EuroSAT. Every 640 m cell is put in one of four land-cover groups, and the two dates are compared cell by cell.
- Before
- 2015-12-11
- After
- 2025-01-12
- Area analysed
- 394 km²
Change
+4.7 km²net change in built-up area
In cells the model is sure of on both dates (confidence ≥ 0.8): 2 km² became built-up, 2.5 km² changed in total.
Land cover on both dates
| 2015 | 2025 | ± | |
|---|---|---|---|
| Agriculture no notable change | 0.5% | 0.4% | -0.1 |
| Natural vegetation no notable change | 5.4% | 4.6% | -0.8 |
| Built-up increased | 57.6% | 58.8% | +1.2 |
| Water no notable change | 36.4% | 36.2% | -0.2 |
Largest transitions (confident cells)
- Natural vegetation → Built-up1.2 km²
- Water → Agriculture0.4 km²
- Agriculture → Built-up0.4 km²
- Water → Built-up0.4 km²
Limits
- Every value shown is a model estimate, not a measurement.
- Areas are not measurements but approximations counted from cells. The figures are always computed on 640 m cells; the scale only changes how the map is drawn.
- The model was trained on European images only; results for places tagged "experimental" are less reliable.
- Clouds, shadows and seasonal differences can show change that is not there.