Atlas · Nigeria / Methodologies
METHODOLOGIES

How carbon project locations are established and checked

Every mapped project carries an accuracy label. Atlas never places a project at a guessed spot.

Intermediate 2 min read carbonlocationaccuracymethod

Most registries publish a country for each project but not always a precise site. Atlas draws a project only when it can stand behind the location, and says how it knows.

The labels

  • Project location: coordinates published by the registry for this project.
  • Programme location: a point the registry shares between several projects of one programme (for example household stoves). It marks where the programme works, not each household.
  • Corrected location: the registry coordinates had swapped latitude and longitude or a flipped sign. Atlas tested the possible corrections against the country border and kept the one variant that falls inside the right country. The note on the project shows what was changed.
  • Named place: a place named in the project title was found on OpenStreetMap, checked by hand and checked against the country border. It is approximate.
  • Area centre: the centre of the district or region where the project works. Approximate.
  • Country only: not drawn on the map; counted in country totals.

Checks. All mapped points fall inside their country or within 25 km of its border (coastal and border cases). For mangrove projects Atlas also measures the distance to the nearest mapped mangrove as a sense-check.

Limits. A correct-looking point is not proof of a project boundary. Project design documents give boundaries; adding them is planned.

Limits. Points show where a project is, not its exact boundary; approximate labels are indicative only.

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