25 Years of Forest Carbon Data. Now Free to Explore
19 March 2026
By Alessandro Baccini and Marco Albani, Co-CEOs and Co-Founders, Chloris Geospatial
When we founded Chloris, we started from the hypothesis that the biggest obstacle to credible forest carbon accounting wasn't political will or market structure; it was data. Specifically, the lack of accurate, defensible, and accessible measurements needed for carbon markets to earn trust.
That foundation has driven every technical and scientific choice we've made since: the application of AI to satellite imagery at a time when that combination was not standard in the field; the development of the first open 5km above-ground biomass dataset; and eventually, the 30-meter resolution global dataset that now underpins some of the most rigorous carbon project assessments in the world.
Today, we're making 25 years of Chloris above-ground biomass data free to explore, through the Chloris Biomass Viewer.
This is the same dataset that powers our enterprise products, trusted by leading carbon project developers, global brands, standards bodies, and ratings organizations worldwide. Annual measurements of above-ground biomass stock and change, validated against airborne LiDAR and field measurements, with pixel-level uncertainty quantified throughout. Going back to the year 2000. Available now, for any forest on Earth, at no cost.
Why this matters scientifically
Forests are dynamic systems. Carbon accumulates through growth, is released through disturbance, and shifts across landscapes in patterns that only become legible over time. A single year of data tells you where the carbon is. Twenty-five years tells you how it got there, how stable it is, and how much confidence you should have in any projection built on top of it.
For the community of researchers, analysts, and practitioners working in this field, that temporal depth has historically been hard to access consistently. The Viewer changes that. You can now move through 25 years of biomass dynamics across the Amazon, the Congo Basin, Southeast Asia, or any area of interest, without a commercial commitment, and without approximation.
Why now
Scaling investment in nature requires a shared evidentiary foundation. Carbon markets, jurisdictional REDD+, supply chain accountability frameworks, corporate nature disclosure, all of these depend on the credibility of the underlying data. And credibility is built through openness: transparent methodologies, independently validated outputs, and access broad enough that the data can be tested, challenged, and built upon.
We have always believed that the value of rigorous nature data compounds when more people can use it. The Biomass Viewer is an expression of that belief. It is designed for the project developer scanning data for a portfolio of potential sites. For the MRV analyst who wants to assess data quality and coverage before committing to a technical workflow. For a government team working at jurisdictional scale who needs credible baselines without an enterprise budget. For the researcher who simply needs to see what 25 years of biomass dynamics look like in a specific landscape.
Making this free is a mission decision. We started Chloris to empower companies, governments, and civil society to assess, monitor, and invest in forest conservation and restoration with confidence. The Biomass Viewer is the most direct expression of that.
What the Viewer gives you
The Biomass Viewer provides global coverage at 500m resolution and 30-meter resolution data across our full tropical coverage area. You can explore biomass stock and change across any region, track annual dynamics going back to 2000, and see the same data quality that underpins our enterprise products, before any commercial engagement.
It is a discovery tool, not a replacement for the enterprise platform. For project development, portfolio monitoring, bespoke calibration, API access, and the deeper analytical workflows that serious MRV and carbon accounting work requires, the platform remains the right instrument. But the Viewer gives you a direct, unmediated look at the data first.
An open invitation
We have spent years building something we believe is genuinely better: more accurate, longer-running, and more rigorously validated than anything else available at this scale. The standards bodies and project developers who have worked with it tell us the same. Now we would like you to see for yourself, directly.
The forests have been changing for 25 years. The record is there. It's yours to explore.
Dr. Alessandro Baccini is Co-CEO and Chief Science Officer of Chloris Geospatial.
A pioneer in satellite-based measurement of above-ground biomass, he spent two decades advancing the science of forest carbon measurement before co-founding Chloris in 2021.
Marco Albani is Co-CEO and CRO of Chloris Geospatial.
A forest scientist, management consultant, and former Executive Director of the Tropical Forest Alliance, Marco brings decades of experience at the intersection of sustainability, conservation, and business strategy.