LANDFIRE 2020 Aspect (ASP) AK
In late 2021 the LANDFIRE (LF) team responded to feedback and created new topographic products (Elevation, Slope, and Aspect) for the Conterminous US, Alaska, Hawaii, and Puerto Rico and the Virgin Islands to release in early 2022. After the LF 2020 Elevation product was projected to Albers (see Elevation metadata abstract), aspect was calculated using the geodesic option in ArcGIS Desktop 10.6.1 to reflect true-north. The file was then converted to Signed 16-bit using the Copy Raster tool in ArcGIS Desktop 10.6.1 and then clipped to the LF boundary using the Extract by Mask tool in ArcGIS Desktop 10.6.1. Flat pixels with slope less than or equal to two (2) degrees were assigned a value of negative one (-1). Pixels with value 360 were reclassified to zero (0). Several NoData areas were assigned value negative one (-1) that overlap the LF data extent which includes a 3 nautical mile buffer along coastal areas. -9999 indicates NoData.
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey", "@type": "vcard:Contact", "hasEmail": "mailto:helpdesk@landfire.gov" } |
| description | In late 2021 the LANDFIRE (LF) team responded to feedback and created new topographic products (Elevation, Slope, and Aspect) for the Conterminous US, Alaska, Hawaii, and Puerto Rico and the Virgin Islands to release in early 2022. After the LF 2020 Elevation product was projected to Albers (see Elevation metadata abstract), aspect was calculated using the geodesic option in ArcGIS Desktop 10.6.1 to reflect true-north. The file was then converted to Signed 16-bit using the Copy Raster tool in ArcGIS Desktop 10.6.1 and then clipped to the LF boundary using the Extract by Mask tool in ArcGIS Desktop 10.6.1. Flat pixels with slope less than or equal to two (2) degrees were assigned a value of negative one (-1). Pixels with value 360 were reclassified to zero (0). Several NoData areas were assigned value negative one (-1) that overlap the LF data extent which includes a 3 nautical mile buffer along coastal areas. -9999 indicates NoData. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P1LJEZ3G", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.6a16074eb66b013d45990bb3.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_6a16074eb66b013d45990bb3 |
| keyword |
[ "AK", "Alaska", "Aspect", "LANDFIRE Remap", "OCONUS", "U.S. Geological Survey (USGS)", "US", "USGS:6a16074eb66b013d45990bb3", "United States", "biota", "fires", "geographic information systems", "geospatial datasets", "hazard preparedness", "image collections", "raster digital data", "remote sensing", "topo", "topography" ] |
| modified | 2026-07-23T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -179.3173, 48.8767, -122.0000, 71.5478 |
| theme |
[ "geospatial" ] |
| title | LANDFIRE 2020 Aspect (ASP) AK |
