1993. This polygon shapefile contains ice observations in the Arctic region for June 29, 1993. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1986. This polygon shapefile contains ice observations in the Arctic region for January 20, 1986. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2008. World Wildlife Fund (WWF). This drainage direction map for Australasia defines the direction of flow from each cell in the conditioned digital elevation model to its steepest... U.S. Geological Survey.
2008. World Wildlife Fund (WWF). This drainage direction map for Australasia defines the direction of flow from each cell in the conditioned digital elevation model to its steepest... U.S. Geological Survey.
2008. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
2008. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
2008. World Wildlife Fund (WWF). This raster layer is a void-filled digital elevation model (DEM) of Australasia at 15 arc-seconds resolution. Elevation is expressed in meters and ... U.S. Geological Survey.
2008. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales) provides hydrographic information in a consistent... U.S. Geological Survey.
1987. This polygon shapefile contains ice observations in the Arctic region for April 21, 1987. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This polygon shapefile shows the approximate extent of marine areas in the Arctic covered by permanent polar ice. The data originated from the Cana... Geological Survey (U.S.).