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GlobCover Global 300m LULC Update
posted by Satri
on Friday April 04, @01:15PM
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from the can-300m-be-enough-for-your-uses? dept.
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Via AGISRS, here's two updates on the GlobCover dataset which provides free 300m-resolution land-use land-cover of global coverage. We discussed GlobCover about a year ago, the source data is not available but should be this coming July. You can browse the whole world GlobCover LULC data using the tool in the links above. From the ESA article: "Earth’s land cover has been charted from space before, but this map, which will be made available to the public upon its completion in July, has a resolution 10 times sharper than any of its predecessors.
Scientists, who will use the data to plot worldwide land-cover trends, study natural and managed ecosystems and to model climate change extent and impacts, are hailing the product – generated under the ESA-initiated GlobCover project – as 'a milestone.'"
See other LULC related stories below.
Related Stories
ASPRS's Survey on Land-Imaging
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Via the Applied-GIS-RS mailing list, the ASPRS seeks worldwide survey respondents on the subject of medium-resolution land imaging. From the announcement: "The White House Office of Science and Technology Policy (OSTP) has enlisted the support of ASPRS to play a major role in helping to determine the future of the U.S. moderate resolution land imaging program. In an effort to assist OSTP in documenting the value and nature of societal benefits derived from moderate resolution land imaging, ASPRS has developed a survey so that the global professional community can provide useful input into the deliberative process. This survey asks for information about past applications of Landsat and other moderate resolution sources, as well as solicits opinions on future systems and policies."
US National Land Cover Database 2001 Now Available
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The S,M,GIS blog tells us the U.S. National Land Cover Database 2001 (NLCD 2001) is now available. From the blog: "The U.S. Geological Survey, on behalf of the interagency Multi-Resolution Land Characteristics Consortium (MRLC), is pleased to announce the availability of NLCD 2001 products for the conterminous United States. [...] NLCD 2001 products include 21 classes of land cover, percent tree canopy and percent urban imperviousness at 30 m resolution derived from Landsat imagery."
The Global Mapping Project 4 comments
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A colleague sent me the link to the active Global Mapping Project. From their summary: "What is a Global Map?
Digital geographic information in 1 km resolution covering the earth's surface with standardized specifications and available to everyone at marginal cost. How Many Layers are there in a Global Map?
Global Map data have 8 layers: Boundaries, Drainage, Transportation, Population Centers, Elevation, Land Cover, Land Use, and Vegetation." What's impressive is the quantity of countries which participates, in short: most countries!
ESA's GlobCover 300m Global LULC Coverage
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All Points Blog links to ESA's GlobCover project which released a global land use land cover classification at 300m. From the site: "The GlobCover project has developed a service capable of delivering global composite and land cover maps using as input observations from the 300m MERIS sensor on board the ENVISAT satellite mission. The GlobCover service has been demonstrated over a period of 18 months [Januray 2005 - June 2006], for which a set of MERIS Full Resolution (FR) composites (bi-monthly and annual) and a Global Land Cover map have been produced. The GlobCover composites are the results of a set of processing made on the MERIS FR images such as cloud detection, atmospheric correction, geolocalisation and re-mapping. The GlobCover Land Cover map is compatible with the UN Land Cover Classification System (LCCS)." Yes, it's free. See also related stories below.
Global Land Cover Network Bulletin Issue #10
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The short issue #10 of the Global Land Cover Network bulletin is now available. This "global alliance for standard multi-purpose land cover data production" focuses on United Nations activities and projects. From the 6-pages documents: "As anticipated in the last edition, this issue hosts a
detailed report of the activities of the Northern
Eurasian Earth Science Partnership Initiative (NEESPI)." See global land cover related stories below.
World Vector Land-Water Mask
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The useful EVS-Islands blog discuss the creation of a global land-water mask in vector format (screenshots included). From the blog: "Regular readers know that I am a long time user of World Vector Shorelines (WVS). These vectors cover the world at a scale of 1:250,000. If you download them, you will see that they are not polygons, but line files. I have always wanted to create a land-mask of all land areas within this database, but have never had the time, software or computer calculating power. That was until yesterday. [...] I let my reader know that the 1-kilometer global land-sea mask he currently was using was, probably, the best going. He knew of the Globcover LULC 300-meter grid cell version coming out in the first part of February 2008 to be created and made available by ESA. [...] Using a simple routine within the digitizing tools, I created polygons from lines." Mr. Minton's new dataset is freely available from the blog entry. The topic of world shorelines datasets was previously discussed here over a year ago.
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