Phrae satellite images 2017–2025: how it changed
9 yearly Sentinel-2 images of Phrae, from 19 Feb 2017 to 29 Dec 2024. Green cover in true colour moved from 30% to 27% (-3 percentage points) across a 8 × 8 km box.
Before and after
20172025Drag the divider or use the arrow keys.
Year by year
19 Feb 2017 · cloud 0% · green 30% 
6 Mar 2018 · cloud 0% · green 30% 
24 Feb 2019 · cloud 0% · green 31% 
11 Dec 2019 · cloud 0% · green 28% 
14 Jan 2021 · cloud 0% · green 25% 
5 Dec 2021 · cloud 0% · green 28% 
28 Feb 2023 · cloud 0% · green 22% 
3 Apr 2024 · cloud 0% · green 19% 29 Dec 2024 · cloud 0% · green 27%
Yearly facts
| Year | Acquired | Cloud cover | Green cover | Valid pixels |
|---|---|---|---|---|
| 2017 | 19 Feb 2017 | 0% | 30% | 100% |
| 2018 | 6 Mar 2018 | 0% | 30% | 100% |
| 2019 | 24 Feb 2019 | 0% | 31% | 100% |
| 2020 | 11 Dec 2019 | 0% | 28% | 100% |
| 2021 | 14 Jan 2021 | 0% | 25% | 100% |
| 2022 | 5 Dec 2021 | 0% | 28% | 100% |
| 2023 | 28 Feb 2023 | 0% | 22% | 100% |
| 2024 | 3 Apr 2024 | 0% | 19% | 100% |
| 2025 | 29 Dec 2024 | 0% | 27% | 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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