Chiang Rai satellite images 2017–2025: how it changed
9 yearly Sentinel-2 images of Chiang Rai, from 9 Feb 2017 to 2 Feb 2025. Green cover in true colour moved from 46% to 30% (-16 percentage points) across a 8 × 8 km box.
Before and after
20172025Drag the divider or use the arrow keys.
Year by year
9 Feb 2017 · cloud 0% · green 46% 
6 Mar 2018 · cloud 0% · green 38% 
24 Feb 2019 · cloud 0% · green 43% 
30 Mar 2020 · cloud 0% · green 22% 
3 Feb 2021 · cloud 0% · green 29% 
8 Feb 2022 · cloud 0% · green 37% 
8 Feb 2023 · cloud 0% · green 21% 
18 Feb 2024 · cloud 0% · green 23% 2 Feb 2025 · cloud 0% · green 30%
Yearly facts
| Year | Acquired | Cloud cover | Green cover | Valid pixels |
|---|---|---|---|---|
| 2017 | 9 Feb 2017 | 0% | 46% | 100% |
| 2018 | 6 Mar 2018 | 0% | 38% | 100% |
| 2019 | 24 Feb 2019 | 0% | 43% | 100% |
| 2020 | 30 Mar 2020 | 0% | 22% | 100% |
| 2021 | 3 Feb 2021 | 0% | 29% | 100% |
| 2022 | 8 Feb 2022 | 0% | 37% | 100% |
| 2023 | 8 Feb 2023 | 0% | 21% | 100% |
| 2024 | 18 Feb 2024 | 0% | 23% | 100% |
| 2025 | 2 Feb 2025 | 0% | 30% | 100% |
Method and limits
- Sentinel-2 true colour at 10 m per pixel, so single houses are not visible.
- One clear dry-season acquisition per year; seasons and sun angle still differ slightly between years.
- Green cover is an RGB approximation of green-dominant pixels, not NDVI.
- Clouds, haze and shadows can remain in a scene even after selection.
Contains modified Copernicus Sentinel data, processed by MapScale.
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