ECOCLIMAP-SG+: an agreement-based high-resolution land use land cover dataset for meteorological modelling

ECOCLIMAP-SG+ is a new 60 m land use land cover dataset, which covers a continental domain, and represents the 33 labels of the original ECOCLIMAP-SG dataset. ECOCLIMAP-SG is used in HARMONIE-AROME, the numerical weather prediction model used operationally by Met Éireann and other national meteorological services. ECOCLIMAP-SG+ was created using an agreement-based method to combine information from many maps to overcome variations in semantic and geographical coverage, resolutions, formats, accuracies, and representative periods. In addition to ECOCLIMAP-SG+, the process generates an agreement score map, which estimates the uncertainty of the land cover labels in ECOCLIMAP-SG+ at each location in the domain.Using a set of primary labels, ECOCLIMAP-SG+ outperforms ECOCLIMAP-SG regarding the F1-score against LUCAS 2022 over Europe and the Irish national land cover 2018 dataset. Similarly, it outperforms the Icelandic version of ECOCLIMAP-SG for most of the represented secondary labels. ECOCLIMAP-SG+ can be further improved by including new maps once they become available. Code: The code used to create ECOSG+ is available on Gitlab. The notebook example/Create\_download\_mstar.ipynb and example/Assemble\_maps.ipynb can be ran in Google Colab but one must first sign up for a Google Earth Engine account to run the code. The assembly code requires ECOCLIMAP-SG which is available through CNRM Contents: Each zip file contains 100 tiles covering the EURAT domain (longitudes: -32 to 42 degrees, latitudes: 20 to 72 degrees). Each tif file has a resolution of 60m. quality_score_map.zip: The agreement quality score. best-guess_map.zip : The so-called best-guest map which represents the label with the highest quality score for each pixel. ecosg_plus.zip: ECOCLIMAP-SG+ map over the Eurat domain divided in 100 .tif files degrees). This map is a composition of the best-guess map where the quality score is greater than 52.5% and ECOCLIMAP-SG everywhere else. Labels: 1. Sea and oceans 2. Lakes 3. Rivers 4. Bare land 5. Rocks 6. Permanent snow and ice 7. Boreal broadleaf deciduous 8. Temperate broadleaf deciduous 9. Tropical broadleaf deciduous 10 .Temperate broadleaf evergreen 11. Tropical broadleaf evergreen 12. Boreal needleleaf evergreen 13. Temperate needleleaf evergreen 14. Boreal needleleaf deciduous 15. Shrubs 16. Boreal grassland 17 .Temperate grassland 18. Tropical grassland 19. Winter C3 crops 20. Summer C3 crops 21.C4 crops 22. Flooded trees 23. Flooded grassland 24. LCZ1: compact high-rise 25. LCZ2: compact mid rise 26. LCZ3: compact low-rise 27. LCZ4: open high-rise 28. LCZ5: open midrise 29. LCZ6: open low-rise 30 .LCZ7: lightweight low-rise 31. LCZ8: large low-rise 32. LCZ9:sparsely built 33. LCZ10: heavy industry