Highlighting continued uncertainty in global land cover maps for the user community

Fritz S, See L, McCallum I, Schill C, Obersteiner M, van der Velde M, Bottcher H, Havlik P, et al. (2011). Highlighting continued uncertainty in global land cover maps for the user community. Environmental Research Letters 6 (4): no.044005. DOI:10.1088/1748-9326/6/4/044005.

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Project: European approach to GEOSS (EUROGEOSS, FP7 226487), Climate Change - Terrestrial Adaption and Mitigation in Europe (CCTAME, FP7 212535), Earth Observation for monitoring and assessment of the environmental impact of energy use (ENERGEO, FP7 226364)

Abstract

In the last 10 years a number of new global datasets have been created and new, more sophisticated alorithms have been designed to classify land cover. GlobCover and MODIS v.5 are the most recent global land cover products available, where GlobCover (300 m) has the finest spatial resolution of other comparable products such as MODIS v.5 (50 m) and GLC-2000 (1 km). This letter shows that the thematic accuracy in the cropland domain has decreased when comparing these two latest products. This disagreement is also evident spatially when examining maps of cropland and forest disargeement between GLC-2000, MODIS and GlobCover. The analysis highlights the continued uncertainty surrounding these prducts, with a combined forest and cropland disagreement of 893 Mha (GlobCover versus MODIS v.5). This letter suggests that data sharing efforts and the provision of more 'in situ' data for training, calibration and validation are very important conditions for improving future global land cover products.

Item Type: Article
Research Programs: Ecosystems Services and Management (ESM)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:45
Last Modified: 08 Feb 2018 14:37
URI: http://pure.iiasa.ac.at/9500

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