# Global Aboveground Biomass 100 m

CTrees — version 1.2.0

## Description

This dataset quantifies aboveground biomass density (Mg/ha) at 100 m spatial resolution, with global coverage annually from 2000 onwards. Data includes pixel-level residual uncertainty (± standard error).

## Summary

- **ID:** 202b37bb-23bf-47f8-bc71-558292d69c31
- **Type:** Raster
- **CRS:** EPSG:4326
- **Spatial coverage:** Global
- **Spatial resolution:** 100 m
- **Temporal coverage:** 2000+
- **Temporal resolution:** Annual

## Usage notes

New time points are delivered annually. Spatial coverage is limited to vegetated land surfaces between 81.8°N and 81.8°S. Estimates for years before 2010 and for regions with sparse reference samples rely more heavily on temporal extrapolation, so are better suited to identifying long-term trends than to precise annual stock assessment.

## AOI constraints

- **AOI area:** ≤ 1,000,000 ha
- **Geometry:** Polygon, MultiPolygon

## Variables

### aboveground_biomass_density
- **Type:** float32
- **Units:** Mg/ha
- **NoData:** NaN
- **Scale:** 0.1
- **Offset:** 0
Aboveground biomass density of dry matter in live woody vegetation on a per hectare basis. Data is generated using a DenseNet deep learning model trained on aboveground biomass reference samples from airborne laser scanning, field plots, forest inventories, and mangrove sites, using Landsat optical, ALOS PALSAR L-band backscatter, topographic, and ancillary spaceborne LiDAR canopy height predictors.

### aboveground_biomass_density_uncertainty
- **Type:** float32
- **Units:** Mg/ha
- **NoData:** NaN
- **Scale:** 0.1
- **Offset:** 0
Residual standard error for aboveground biomass density variable.

## Pricing

This dataset has no data acquisition cost.