![]() and Alberta in 2005, covering 26,728 km 2. (2010) inventory estimates a total of 17,595 glaciers in B.C. It follows that the WC 2N inventory and glacier outlines are the best option for both spatial and temporal resolution, although it is not without some shortcomings. In comparison to the NRCan glacier layer, the WC2N outlines appear to be of higher resolution and have less smoothed borders. Two complete time slices have been compiled for the glaciers of Alberta and B.C. This dataset has been contributed as a public resource to the Global Land Ice Measurement from Space (GLIMS) glacier inventory. (2010) as part of the Western Canadian Cryosphere Network (WC 2N). The most recent and thorough inventory of glaciers in western Canada is the recently-completed compilation of Bolch et al. This means that the majority of glaciers in the interior ranges of western Canada are small and vulnerable to ongoing retreat. covered an area of 4,298 km 2, giving an average glacier size of 1.3 km 2. The compilation did point out some important statistics regarding the glacier size distribution: a total count of 3,271 glaciers in the Rocky and Columbia Mountains of Alberta and B.C. Many of the glacier outlines are therefore not representative of present extents and the temporal resolution can be considered poor. For instance, it was produced using maps ranging from 1969 to 1998, a period during which glaciers experienced extensive retreat. This glacier layer is also not without its problems. Glaciers from these maps were later digitized. In a subsequent effort, Natural Resources Canada produced 1:50,000 scale topographic maps of the Canadian Rockies. As the project came to a halt in 1974, glaciers north of the Nelson River Drainage basin were not counted or mapped. GLIMS data can be downloaded into a number of GIS-compatible formats, including ESRI Shapefiles, MapInfo tables, Geographic Mark-up Language (GML), and Keyhole Mark-up Language (KML) suitable for viewing in Google Earth.In total, the initial inventory found 1,524 areas of perennial snow and ice in the Nelson River catchment. This Web application allows users to view and query several thematic layers, including glacier outlines, Regional Coordinator institution locations, the World Glacier Inventory, and more. The GLIMS Glacier Viewer was developed to provide the public with easy access to the GLIMS Glacier Database. New glacier data are continually being added to the database. The GLIMS Glacier Database provides students, educators, scientists, and the public with reliable glacier data from these analyses. The GLIMS Glacier Database was built up from data contributions from many glaciological institutions, which are managed by Regional Coordinators, who coordinate the production of glacier mapping results for their particular region. The GLIMS initiative has created a unique glacier inventory, storing information about the extent and rates of change of all the world's mountain glaciers and ice caps. ![]() GLIMS uses data collected by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard the Terra satellite and the LANDSAT series of satellites, along with historical observations. Global Land Ice Measurements from Space (GLIMS) is an international initiative with the goal of repeatedly surveying the world's estimated 200,000 glaciers. Exchange for Observations and Local Knowledge of the Arctic (ELOKA).NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).Greenland Today & Antarctic Ice Sheet Today.A part of CIRES at the University of Colorado Boulder ![]()
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