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Global Land Survey (GLS)

     

The U.S. Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA) have collaborated on the creation of the Global Land Surveys (GLS) data sets. Each of these collections was created using the primary Landsat sensor in use at the time. The data used in each collection meet quality and cloud cover standards.

Additional details about the Global Land Survey collections can be found at http://landsat.usgs.gov/science_GLS.php.

The following table describes the details of each Global Land Survey data set:

Collection

Instrument(s)

Dates

GLS1975

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

Images acquired from 1972 – 1983
Images acquired from 1982 - 1987

GLS1990

Landsat 4-5 Thematic Mapper (TM)

Images acquired from 1987 - 1997

GLS2000

Landsat 7 ETM+

Images acquired from 1999 - 2003

GLS2005

Landsat 5 Thematic Mapper (TM)
Landsat 7 ETM+
EO-1 ALI

Images acquired from 2003 - 2008

GLS2010

Landsat 5 Thematic Mapper (TM)
Landsat 7 ETM+

Images acquired from 2008 - 2011

All Global Land Survey collections contain the standard Landsat bands designated for each sensor. Band Designations can be found at http://landsat.usgs.gov/band_designations_landsat_satellites.php.

 

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
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

Business Hours: Monday thru Friday, 8:00 a.m. to 4:00 p.m., Central Time