Land Use Data

Data Set	Coverage	Resolution	Date of data	CTGPROC dataset keyword
Global Land Cover Characterization (GLCC)	Global (developed on a continent by continent basis) Global Readme	30 arc-second (~1 km)	1997 (Version 1) 1999 (Version 2)	GLAZNA, GLAZSA, GLAZEU, GLAZAS, GLAZAF, GLAZAP
National Land Cover Data (NLCD)	U.S.	30m	2011, 2006, 2001, 1992	NLCD92, NLCDTF, NLCD01
USGS Land Use Land Cover (LULC)	U.S.	1:100,000- and 1:250,000-scale	Early 1990s	CTG ¹
Corine	Europe	100m 250m	1990, 2000, 2006	GEN ²

¹ If LULC files come in uncompressed format, the CTGCOMP program needs to be applied first.

² The Corine data has to be converted to a generic format.

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GLCC and NLCD are available through the USGS Earth Explorer site.

The selection of data is performed through a web interface that is easy to navigate: To narrow your search area: type in an address or place name, enter coordinates or click the map to define your search area (for advanced map tools, view the help documentation), and/or choose a date range.

Data come in formats supported by CTGPROC used for land use processing in CALMET/CALPUFF modeling.

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Data can also be downloaded through the following direct links:

USGS National Land Cover Data 1992 (NLCD 92)

NLCD 92 data by State
- Download the NLCD 92 data by State, through the USGS Web Site. Note: download the data files labeled "state_name.nlcd.bin.gz".

Corine: http://www.eea.europa.eu/data-and-maps/data/corine-land-cover-2006-raster-2

USGS CTG Land Use/Land Cover (LULC) Data

1:250,000-scale, US land use data
- Download the 1:250,000 scale LULC US data sorted alphabetically, through the USGS Web Site. Note: download the data files labeled "grid_cell".

1:100,000-scale, US land use data

Download the 1:100,000 scale LULC US data sorted alphabetically, through the USGS Web Site. Note: Download the data files labeled "grid_cell".

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The complete list of data formats supported by CTGPROC is:

(CTG)
(GEN)
(NZGEN)
(GLAZNA)
(GLAZSA)
(GLAZEU)
(GLAZAS)
(GLAZAF)
(GLAZAP)
(USGSLA)
(NLCD92)
(NLCDTF)
(NLCD01)
(GLC2K)
(UMDGLC)
(MODIS)

designates USGS CTG (compressed)
designates Generic (no USGS translation is done)
designates New Zealand Generic
designates USGS Global (Lambert Azimuthal) for North America
designates USGS Global (Lambert Azimuthal) for South America
designates USGS Global (Lambert Azimuthal) for Eurasia - Europe
designates USGS Global (Lambert Azimuthal) for Eurasia - Asia
designates USGS Global (Lambert Azimuthal) for Africa
designates USGS Global (Lambert Azimuthal) for Australia-Pacific
designates USGS Lambert Azimuthal data (~1000m)
designates USGS NLCD 1992
designates National Land Cover Dataset 1992 GeoTIFF
designates National Land Cover Dataset 2001 GeoTIFF
designates Global Land Cover 2000 GeoTIFF
designates Univ. of Maryland Global Land Cover GeoTIFF
designates Boston Univ. Modis Global Land Cover