Atlas · Republic of the Congo
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Dataset
DATASET
Global Mangrove Watch v4.1: mangrove extent 2020, Republic of the Congo
Mangrove extent for 2020 from the Global Mangrove Watch v4.1 annual time series (1985-2025, Landsat/Sentinel and SAR based), as polygons labelled with their country: Republic of the Congo. Each polygon is a contiguous mangrove area; the source holds one attribute (PXLVAL = 1, mangrove).
View on map
CSV GeoJSON
Features
913
mangrove_extent_2020
Observations
0
Linked measurements
Quality score
100 / 100
Completeness · provenance · checks
Version
v1
Imported 2026-10-13
About this dataset
- Source
- Global Mangrove Watch v4.1Global Mangrove Watch (Aberystwyth University, soloEO, Wetlands International, UNEP-WCMC, JAXA)
- Source layer
- gmw_v4112_2020_mng_ext_cntry_info_vec (EPSG:4326)
- Module / ecosystem
- MANGROVES · Mangroves
- Licence
- —
- Coordinate system
- Stored as EPSG:4326 (WGS 84). Source native: n/a
- Records archived
- 913 (matches the source's own count)
How to cite
WWF Kenya, KMFRI, KFS (2026). Global Mangrove Watch v4.1: mangrove extent 2020, Republic of the Congo. Archived copy held by Atlas Blue Carbon Intelligence (snapshot n/a; SHA-256 49bbedfaae855b11…). Accessed via https://atlas.twende.green/datasets/gmw-v4-2020-cg.
Feature classes
| Class | Features |
|---|---|
| mangrove_extent_2020 | 913 |
Measurements recorded
Geometry-only dataset
No separate measurements; attributes are shown in the data table.
Unit harmonisation applied to this dataset
Every number in Atlas is stored in one canonical unit; the original value and unit are always kept
| Source field | Measure | Source unit | Atlas unit | Factor | Treatment |
|---|---|---|---|---|---|
| cntry_iso3 | class | country label (cntry_iso3) | — | — | used to assign each polygon to its country |
| geometry | area / perimeter | EPSG:4326 degrees | ha / m | — | geodesic area and perimeter computed on the WGS 84 ellipsoid with PostGIS |
Attributes stored per feature
How many features carry each attribute (first 20,000)
| Attribute | Features |
|---|---|
| year | 913 |
| area_ha_geodesic | 913 |
| perimeter_m | 913 |
Checked against the geometry
Source value ÷ the same quantity computed from the stored shape
No unit checks apply
Archive & integrity
- Snapshot
- n/a
- Format
- GeoPackage (gzip), WGS 84
- Archive checksum
- 49bbedfaae855b1187f8e3bbea3da3b571717a14094cc70c40bc6280121364a5
Atlas serves this dataset from its own archived copy. Nothing is requested from the publisher when you view or download it.
Verification against the raw archive
Record counts match the source
Imported record count equals the source's own count; per-record cross-check recorded in the import run.
Import history
| Run | Status | Started | Records | Repaired geometries |
|---|---|---|---|---|
| #209 | completed | 2026-10-13 01:29:48.041575+00 | 913 | 0 |