Glossary of terms
Plain-English definitions of the words used across Atlas.
Additionality: carbon benefit that would not have happened without a project. Blue carbon: carbon stored by mangroves, seagrass and salt marshes. CC BY 4.0: licence allowing reuse with credit. CO₂e (CO₂-equivalent): greenhouse gases expressed as the CO₂ with the same warming effect. 1 tC = 3.667 tCO₂e. CRS / EPSG:4326: the coordinate system Atlas uses (WGS 84 longitude/latitude). Effective mesh size: average patch size a random point lands in; higher means less fragmented. Epoch: one dated map (for example 2015). Formation: a mangrove stand named by its dominant species (for example "Rhizophora dominant"). Geodesic area: area measured on the Earth's curved surface. Gi*: Getis-Ord statistic that finds hot and cold spots. Ha (hectare): 10,000 m²; about 1.4 football pitches. Intent: the type of question the analyst recognised. Moran's I: measure of spatial clustering. MRV: measurement, reporting and verification. NDVI: greenness index from satellite imagery. Net change: later area minus earlier area. Polygon: a mapped patch. Provenance: the trace from a number back to its source. SAR: radar remote sensing. tC/ha: tonnes of carbon per hectare.
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