TY - RPRT AU - Siham El Garroussi AU - Patricia de Rosnay AU - Sebastien Garrigues AU - David Fairbairn AU - Joe McNorton AU - Francesca Di Giuseppe AB - This deliverable outlines the methodology and results of Task 2 of Fuelity project, which focused on integrating Earth Observation data into the ECMWF land data assimilation system (LDAS) to constrain live fuel moisture content (LFMC) estimates. The aim is to support a high-resolution, observation-informed global LFMC reanalysis. Enhancements to ECMWF’s ecLand system include targeted modifications to the Simplified Extended Kalman Filter to assimilate L-band Vegetation Optical Depth, Solar-Induced Fluorescence, and ASCAT backscatter data, thereby improving estimates of Leaf Area Index and soil moisture, which underpin LFMC. A machine learning-based post-assimilation bias correction further refines the LAI inputs. Evaluation shows improved seasonal vegetation dynamics and realistic LFMC spatial and temporal patterns. The system successfully captured canopy loss during the 2021 Evia wildfire, demonstrating its potential for operational fire monitoring and risk assessment. BT - ESA Contract Report CY - Reading DA - 07/2025 DO - 10.21957/0bb27c6524 M1 - 4000144712/24/I-DT-bgh M3 - ESA Contract Report N2 - This deliverable outlines the methodology and results of Task 2 of Fuelity project, which focused on integrating Earth Observation data into the ECMWF land data assimilation system (LDAS) to constrain live fuel moisture content (LFMC) estimates. The aim is to support a high-resolution, observation-informed global LFMC reanalysis. Enhancements to ECMWF’s ecLand system include targeted modifications to the Simplified Extended Kalman Filter to assimilate L-band Vegetation Optical Depth, Solar-Induced Fluorescence, and ASCAT backscatter data, thereby improving estimates of Leaf Area Index and soil moisture, which underpin LFMC. A machine learning-based post-assimilation bias correction further refines the LAI inputs. Evaluation shows improved seasonal vegetation dynamics and realistic LFMC spatial and temporal patterns. The system successfully captured canopy loss during the 2021 Evia wildfire, demonstrating its potential for operational fire monitoring and risk assessment. PB - ECMWF PP - Reading PY - 2025 T2 - ESA Contract Report TI - Advancing global live fuel moisture mapping through multi-sensor data assimilation UR -   ER -