EO·Atlas
GLAD-S2 (Sentinel-2 Deforestation Alerts)
Compiled from public sources on 2026-05-24. Not independently verified by World Resources Institute.
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GLAD-S2 (Sentinel-2 Deforestation Alerts) is an event-based near-real-time forest disturbance alert product derived from Sentinel-2 multispectral imagery at 10 m native spatial resolution. Produced by the GLAD laboratory at the University of Maryland and distributed via Global Forest Watch (GFW), the product extends the Landsat-based GLAD-L methodology described in Hansen et al. 2016[1] to the higher spatial resolution of Sentinel-2.
Confirmed coverage as of the research date encompasses Amazon Basin primary humid tropical forest[2]. GFW marketing materials state a pan-tropical footprint was planned for expansion by end of 2021[3], though that broader coverage extent has not been independently verified from a tier-1 source as of 2026-05-18.
Alerts are available through the GLAD Earth Engine Applications portal[4] and Global Forest Watch[3] under CC BY 4.0. The product is event-based and designed for detection of individual clearing events; it is not a suitable input for forest area estimation. Cloud cover during Sentinel-2's nominal 5-day revisit extends effective detection latency for cloud-persistent scenes. Alert confidence tiers distinguish probable detections (single observation) from confirmed detections (repeat observations)[2].
An integrated multi-system analysis published in 2024 demonstrated improved detection timeliness and confidence when GLAD-S2 outputs are combined with complementary alert systems[5]. No dedicated peer-reviewed validation paper for GLAD-S2 specifically has been identified; the product inherits the GLAD-L validation framework.
Pricing not publicly listed by operator
Supply chain position
- [1]GLAD Forest Alerts dataset page, UMD GLAD laboratoryagency doc2026-05-24
- [2]Higher Resolution Alerts Offer More Detailed Picture of Forest Loss, Global Forest Watch Blogoperator marketing2026-05-24
- [3]GLAD Earth Engine Applications index, UMDoperator marketing2026-05-24
- [4]Humid tropical forest disturbance alerts using Landsat data, Hansen et al. 2016 ERLpeer reviewed2026-05-24
- [5]Integrating satellite-based forest disturbance alerts improves detection timeliness and confidence, IOP 2024peer reviewed2026-05-24
How to cite this page
Plain text
GLAD-S2 (Sentinel-2 Deforestation Alerts). EO-Atlas, SpectraWorks B.V., last reviewed 2026-05-24. https://eo-atlas.org/data_products/glad-s2-alerts (CC BY 4.0)
BibTeX
@misc{eoatlas:data_products:glad-s2-alerts,
title = {GLAD-S2 (Sentinel-2 Deforestation Alerts)},
author = {{EO-Atlas}},
publisher = {SpectraWorks B.V.},
year = {2026},
note = {Last reviewed 2026-05-24. CC BY 4.0},
url = {https://eo-atlas.org/data_products/glad-s2-alerts}
}