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Global Land Survey (GLS)

   

The U.S. Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA) collaborated from 2009 to 2011 to create the Global Land Surveys (GLS) datasets. Each of these collections were created using the primary Landsat sensor in use at the time for each collection epoch. The scenes used were a pre-collection format that met strict quality and cloud cover standards at the time the GLS files were created.

Additional details about the Global Land Survey collection can be found at http://landsat.usgs.gov/global-land-surveys-gls.

The Global Land Survey collection consists of images acquired from 1972 to 2012 combined into one dataset.

All Global Land Survey datasets contain the standard Landsat bands designated for each sensor. Band Designations can be found at http://landsat.usgs.gov/what-are-band-designations-landsat-satellites.
 

  GLS2010 GLS2005 GLS2000 GLS1990 GLS1975
Level of Processing Terrain Corrected Terrain Corrected Terrain Corrected Terrain Corrected Terrain Corrected
Number of bands 8 8 8 7 4
Sensor Landsat 5 Thematic Mapper (TM) Landsat 7 ETM+ OLI Landsat 8 Landat 7 ETM+ Landsat 5 Thematic Mapper (TM) Landsat 7 ETM+ EO-1 ALI Landsat 4-5 Thematic Mapper (TM) Landsat 1-3 Multispectral Scanner (MSS) Landsat 4-5* Multispectral Scanner (MSS) *Landsat 4-5 data were used to fill gaps in the Landsat 1-3 data
Dates Images acquired from 2008 - 2012 Images acquired from 2003 - 2008 Images acquired from 1999 - 2003 Images acquired from 1987 - 1997 Images acquired from 1972 – 1983 Images acquired from 1982 - 1987
Resolution Pan 15.0m 15.0m      
Thermal Reflection 30.0m 30.0m 30.0m 30.0m  
Projection Universal Transverse Mercator (UTM) Universal Transverse Mercator (UTM) Universal Transverse Mercator (UTM) Universal Transverse Mercator (UTM) Universal Transverse Mercator (UTM)
Datum WGS84 WGS84 WGS84 WGS84 WGS84
Resampling Cubic Convolution Cubic Convolution Cubic Convolution Cubic Convolution Cubic Convolution
Format GeoTIFF GeoTIFF GeoTIFF GeoTIFF GeoTIFF
Download Available Available Available Available Available

*Many scenes process to complete Terrain Correction (L1T). Some scenes may process to Systematic Correction (L1G) only.

Data Use and Citation Policies

For information on how to cite USGS data plus guidance on usage restrictions,
please see our Data Citations and Use page at https://lta.cr.usgs.gov/citation.

Any use of trade, firm, or product names is for descriptive purposes only and
does not imply endorsement by the U.S. Government.

Contact Information for User Assistance

Long Term Archive User Services
U.S. Geological Survey (USGS)
Earth Resources Observation and Science (EROS) Center
47914 252nd Street
Sioux Falls, SD 57198-0001

Phone Number: 605-594-6151
Toll Free: 800-252-4547
Fax: 605-594-6589

Email:lta@usgs.gov
Web: https://lta.cr.usgs.gov

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