LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
20220131
LANDFIRE 2020 Aspect (ASP) HI
LF 2020
raster digital data
Sioux Falls, SD
Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
https://www.landfire.gov
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 LANDFIRE (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 (ArcGIS) to reflect true north. A persistent processing artifact consisting of numerous, obviously errant pixel values along the boundary of UTM Zones 15 and 16 was rectified by filling an approximately 15km wide swath with aspect values calculated for Elevation in the UTM projection using the planar option in ArcGIS. The file was then converted to signed 16-bit using the Copy Raster tool in ArcGIS and clipped to the LF boundary using the Extract by Mask tool in ArcGIS. 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. Otherwise, -9999 indicates NoData.
LF 2016 Remap (LF Remap) is a comprehensive mapping effort that uses recent data to create a new base map product suite that better represents contemporary conditions. LF Remap represents circa 2016 ground conditions and is designed to produce vegetation, disturbance, and fuels products that inform wildland fire and ecological decision systems. LF Remap has improved past methodologies and processes to incorporate current satellite imagery, contemporary data sources, and the latest software and hardware technologies. Final LF Remap products offer significant improvements to all previous LF versions (read more about versions here https://www.landfire.gov/lf_schedule.php).
LF Remap products are designed to facilitate national and regional level strategic fire and resource management planning and reporting of management activities. The principal purposes of the products include providing, 1) national level, landscape scale geospatial products to support fire and fuels management planning, and 2) consistent fuels products to support fire planning, analysis, and budgeting to evaluate fire management alternatives.
Products are created at a 30 meter raster; however, the applicability of products varies by location and specific use. LF products were designed to support 1) national (all states) strategic planning, 2) regional (single large states or groups of smaller states), and 3) strategic/tactical planning for large sub regional landscapes and Fire Management Units (FMUs) (such as significant portions of states or multiple federal administrative entities). The applicability of LF products to support fire and land management planning on smaller areas will vary by product, location, and specific use. Managers and planners must evaluate LF products according to the scale and requirements specific to their needs.
none
2020
ground condition
Biennially
-160.6050
-154.7280
22.2961
18.8399
ISO 19115 Topic Category
biota
USGS Thesaurus
fires
hazard preparedness
remote sensing
image collections
geospatial datasets
geographic information systems
None
raster digital data
Aspect
topo
U.S. Geological Survey (USGS)
LF 2020
topography
Common geographic areas
US
HI
United States
Hawaii
OCONUS
None
None
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
These products were created by the LF team at USGS EROS, Sioux Falls, SD. Refer to the contact information throughout this metadata to contact the LF team.
None in place
Unclassified
If there is ever doubt, contact the LF Help Desk at helpdesk@landfire.gov
Microsoft Windows 10; ESRI ArcCatalog 10.6.1
Products were tested to ensure that each attribute is represented consistently across all data sets. Attributes were not validated against in person observations.
The products were pixel "truth" tested for consistency of land or water characteristics across all products.
Products were formally tested to ensure that valid data was produced for all pixels. Each product was then validated and tested for duplicates, omissions, and errors.
Beginning in 2016 LF Remap products were created using recent advances in image compositing, tiling algorithms, and faster computing hardware to ensure that LF products remained relevant. LF Remap leveraged the Landsat archive, lidar data, and user contributed field plot data compiled into the LF Reference Database (LFRDB), to create new base map vegetation products. Reference resources included, but were not limited to, Forest Inventory and Analysis (FIA) program plot data (USFS https://fia.fs.fed.us/), Landsat Dynamic Surface Water Extent [(DSWE) USGS https://www.usgs.gov/core-science-systems/nli/landsat], the National Land Cover Dataset [(NLCD) USGS https://www.mrlc.gov/data], and National Agricultural Statistics Service [(NASS) USDA - https://www.nass.usda.gov/]. To read more about LF reference resources go to https://www.landfire.gov/reference.php. Information about LF Remap product testing is available by request or via the website at https://www.landfire.gov.
20220131
Raster
Grid Cell
20729
24853
Albers Conical Equal Area
29.5
45.5
-96.0
23.0
0
0
row and column
30
30
meters
North American Datum of 1983 (NAD 83)
Geodetic Reference System 1980
6378137.000000
298.257222
LANDFIRE (LF) 2020 Aspect. An Attribute Table is included with each product download as a .dbf and embedded in the metadata. The Attribute Data Dictionary (ADD) can be found at https://www.landfire.gov/.
https://landfire.gov/aspect.php
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
This product is reproduced from geospatial information prepared by the U.S. Department of the Interior (DOI) USGS EROS. By removing the contents of this package or taking receipt of these files via electronic file transfer methods, you understand that the data stored on this media can be updated at any time. Represented features may not be in an accurate geographic location. USGS EROS makes no expressed or implied warranty, including warranty of merchantability and fitness, with respect to the character, function, or capabilities of the data or their appropriateness for any user's purposes. USGS EROS reserves the right to correct, update, modify, or replace this geospatial information without notification.
ARCG
20220131
LF 2020
https://www.landfire.gov
none
20220131
LANDFIRE, Earth Resources Observation and Science Center (EROS), U.S. Geological Survey
Customer Service Representative
physical
47914 252nd Street
Sioux Falls
SD
57198
U.S.
605-594-6151
helpdesk@landfire.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None
Unclassified
None