Landsat monthly cloud free complete consistent mosaics 1997-2025 (T. Hengl & S. Sarabandi)

The Open-Earth Monitor Global Workshop 2026 "Next-Generation EO & GeoAI Built on Openness and Distributed Data" 7-9 October 2026, Barcelona, Spain https://earthmonitor.org/global-workshop-2026/ One of the most significant deliverables of the OEMC project are global, cloud-less Landsat monthly time series from 2000–2025 at 30 m resolution. The Landsat global mosaics (V1) are explained in detail in Consoli et al. (2025; https://peerj.com/articles/18585/). The Landsat V2 is at the order of magnitude more ambitious aiming at monthly products in 16bit format and will significantly less artifacts. The pipeline uses a four-step process for improved quality, including gap-filling using spatial and temporal neighbours, data fusion and final gap filling using global models. The results of cross-validation show improvements in accuracy in consistency. Major project challenges include needing 1PB of storage and securing post-2025 commercial services. Landsat V2 can also be used to derive embeddings for 2000-2025.