![]() ![]() The ingest process includes quality control steps that must be passed before data are accepted into the database. Variability in the accumulation area and over parts of the glacier that are debris covered tends to be higher. These comparisons have improved RC ability to produce consistent data, and in addition show that in the lower reaches of a glacier, precision of glacier outlines is typically 3 to 4 pixels. The results were compiled, compared, and analyzed to quantify inter-RC analysis consistency. To quantify the repeatability and precision of data provided by different RCs, we designed a method of comparative image analysis whereby analysts at the RCs and NSIDC could derive glacier outlines from the same set of images, chosen to contain a variety of glacier types. The process of classifying multispectral satellite data to extract vector outlines of glaciers has been automated to some degree, but there remain stages requiring human interpretation. A concern for users of the database is data quality. National Snow and Ice Data Center (NSIDC) and ingested into the GLIMS Glacier Database. The GLIMS initiative includes glaciologists at 82 institutions, organized into 27 Regional Centers (RCs), who analyze satellite imagery to map glaciers in their regions of expertise. In QGIS, this is done in the form for defining or editing a WMS connection.Global Land Ice Measurements from Space (GLIMS) is an international initiative to map the world’s glaciers and to build a geospatial database of glacier vector outlines that is usable via the World Wide Web. To set options to ignore the GetMap/GetFeatureInfo URIs reported by the Important: The metadata returned by the GetCapabilities request has the wrong The information returned by the GetCapabilities request allows the client to display the GLIMS glacier outlines as a layer. Your client may require the expanded form to work. Glims and nsidc software#These services allowĪccess to GLIMS Glacier data directly from desktop GIS software products suchĪs QGIS, ArcGIS, GRASS, or Google Earth, as well as other applications such asĬurrently, only the Web Map Tile Service (WMTS) for the GLIMS Glaciers layer is available. Map Service (WMS) and Web Feature Service (WFS) protocols. Open Geospatial Consortium (OGC) ServicesĪnother way of accessing data within the GLIMS Glacier Database is through the ![]() Hold shift and drag a box to zoom to a region. Use the mouse wheel, zoom-controls, or pinch gestures (on a tablet or phone) to zoom. Keyhole Mark-up Language (KML, Google Earth), and the Generic Mapping Tools (GMT) multi-segment format.ĭrag to pan the map. The GLIMS Glacier outlines can be downloaded as ESRI Shapefiles, MapInfo tables, Geographic Mark-up Language (GML) files, Time, as well as other possible features of the glacier such as the extent of debris cover or the location of supra-glacialĪnd pro-glacial lakes. ![]() Each polygon in this layer represents the extent of a particular glacier at a specific Glacier mapping within the GLIMS initiative. The GLIMS Glacier Outlines layer contains the results of Other glacier databases such as the World Glacier Inventory,Īnd others. Interface can be viewed and spatially queried including: GLIMS Glacier Outlines, An interactive map which gives a view of data in the GLIMS Glacier Database. ![]()
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