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Tateishi, R; Uriyangqai, B; Al-Bilbisi, H; Ghar, MA; Tsend-Ayush, J; Kobayashi, T; Kasimu, A; Hoan, NT; Shalaby, A; Alsaaideh, B; Enkhzaya, T; Gegentana; Sato, HP (2011). Production of global land cover data - GLCNMO. INTERNATIONAL JOURNAL OF DIGITAL EARTH, 4(1), 22-49.

Global land cover is one of the fundamental contents of Digital Earth. The Global Mapping project coordinated by the International Steering Committee for Global Mapping has produced a 1-km global land cover dataset - Global Land Cover by National Mapping Organizations. It has 20 land cover classes defined using the Land Cover Classification System. Of them, 14 classes were derived using supervised classification. The remaining six were classified independently: urban, tree open, mangrove, wetland, snow/ice, and water. Primary source data of this land cover mapping were eight periods of 16-day composite 7-band 1-km MODIS data of 2003. Training data for supervised classification were collected using Landsat images, MODIS NDVI seasonal change patterns, Google Earth, Virtual Earth, existing regional maps, and expert's comments. The overall accuracy is 76.5% and the overall accuracy with the weight of the mapped area coverage is 81.2%. The data are available from the Global Mapping project website ( The MODIS data used, land cover training data, and a list of existing regional maps are also available from the CEReS website. This mapping attempt demonstrates that training/validation data accumulation from different mapping projects must be promoted to support future global land cover mapping.



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