NASA Web-Enabled Landsat Data Alaska 30m Composite Pixel Center Lat/Longs V001
WELDAKLL.015 was decommissioned on December 2, 2019. Users are encouraged to use the improved monthly and annual Global Web-Enabled Landsat Data (GWELD) Version 3.1 (GWELDMO.031 and GWELDYR.031) datasets and the USGS U.S. Landsat Analysis Ready Data Level-2 Data Product (Landsat ARD). The NASA Web-Enabled Landsat Data (WELD) Alaska Latitude Longitude (LL) products are defined with 30 meter (m) composite pixel of the center latitude/longitude point. The NASA WELD data contain a range of values for the minimum/maximum latitude and longitude points. The LL products were created to account for the actual center pixel latitude and longitude points. WELD systematically generated 30 m composited Landsat Enhanced Thematic Mapper Plus (ETM+) mosaics of the United States and Alaska from 2002 to 2012 to provide consistent data for deriving land cover as well as geophysical and biophysical products for regional assessments of surface dynamics for effective study of Earth system function. WELDAKLL is distributed in Hierarchical Data Format 4 (HDF4) (https://www.hdfgroup.org/products/hdf4/). The WELD project is funded by the National Aeronautics and Space Administration (NASA) and is a collaboration between the United States Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center and the South Dakota State University (SDSU) Geospatial Sciences Center of Excellence (GSCE).
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| Spatial Extent: | Bounding Rectangle: N: 72.0 S: 50.0 E: -125.0 W: -175.0 |
Data Format(s): | n/a |
| Temporal Extent: | Platform(s): | LANDSAT-7 | |
| Data Center(s): | LP DAAC | Instrument(s): | ETM+ |
| Version: | 001 | ||
- USER'S GUIDE: https://lpdaac.usgs.gov/documents/176/WELD_User_Guide_v1.5.pdf, The technical information in the User's Guide enables users to interpret and use the data products.
- ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD): https://lpdaac.usgs.gov/documents/177/WELD_ATBD.pdf, The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products.
Collection Information
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Version Description
Initial WELD product suite including CONUS and Alaska at weekly, monthly, seasonal 3 month, and annual time steps. -
DOI
10.5067/MEASURES/WELD/WELDAKLL.001
https://doi.org
Data Identification
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Processing Level
NA
GEOLOC
- Quality
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Collection Progress
Complete
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Access Constraints
The WELD products are freely available for educational, research, or commercial applications. If you use the WELD products please cite them following the WELD Citation guidelines.
Data Dates
| Creation | |
| Last Revision |
Related URLs
Acquisition Information
Projects
| Project Short Name | Campaigns | Project Dates |
|---|---|---|
| WELD |
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No dates provided. |
Temporal Information
Spatial Information
| Coverage Type | Zone Identifier | Geometry | Granule Representation |
|---|---|---|---|
| HORIZONTAL | CARTESIAN | GEODETIC |
Tiling Identification Systems
| System Name | Coordinate 1 Min | Coordinate 1 Max | Coordinate 2 Min | Coordinate 2 Max |
|---|---|---|---|---|
| WELD Alaska Tile | 0.0 | 16.0 | 0.0 | 13.0 |
Location Keywords
- CONTINENT
- NORTH AMERICA
- UNITED STATES OF AMERICA
- ALASKA
Data Centers
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LP DAAC
ARCHIVERLand Processes Distributed Active Archive Center
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U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls, 57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/
- Home Page
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SD-STATE/GISCCE
PROCESSORGeographic Information Science Center of Excellence, South Dakota State University
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1021 Medary Ave, Wecota Hall 115
Brookings, South Dakota 57007
605-688-6591
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Data Contacts
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LP DAAC User Services
User ServicesLP DAAC User Services
LP DAAC-
U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
Sioux Falls, South Dakota 57198
M-F, 8 a.m. to 4 p.m. Central Time
605-594-6116
866-573-3222
Contact DetailsLP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.
The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
https://lpdaac.usgs.gov/
- Home Page
-
Archive And Distribution Information
There is no archive and distribution information for this collection.