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BOREAS FOLLOW-ON DSP-10 REGRIDDED TM MOSAIC LAND COVER MAPS FOR 1994
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Summary:

Existing 30-m land cover Thematic Mapper classification by CCRS was aggregated and reprocessed and are now available at multiple resolutions (10x5 minutes and 30 minutes). These data were regridded for use by the BOREAS Follow-on Carbon and Hydro-Meteorological modeling groups.  Characteristics of the individual products are described below.

Maps included in this data set:

Regridded TM Mosaic Land Cover Maps, 10 by 5 minutes
Regridded TM Mosaic Land Cover Maps, 30 min
 

Data Citation:

Cite this data set as follows (citation revised on October 30, 2002):

Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded TM Mosaic Land Cover Maps for 1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.

Contacts:

Forrest G. Hall
University of Maryland
NASA GSFC
Greenbelt MD
(301) 614-6659
(301) 614-6695
Forrest.G.Hall@gsfc.nasa.gov

Gloria Rapalee
University of California, Irvine
NASA GSFC
Greenbelt MD
(301) 286-0544
(301) 286-0239
grapalee@pop900.gsfc.nasa.gov

David Knapp
Raytheon ITSS
NASA/GSFC
Greenbelt, MD
Phone: (301) 286-1424
David.Knapp@gsfc.nasa.gov
 

Processing:

If there are any questions about how this aggregation was done, please contact Gloria Rapalee (Gloria.Rapalee@gsfc.nasa.gov) or Jaime
Nickeson (Jaime.Nickeson@gsfc.nasa.gov).



Regridded TM Mosaic Land Cover Maps, 10 by 5 minutes

These images were produced by aggregating the 30-m land cover Thematic Mapper classification by CCRS to a 10' (horizontal) by 5' (vertical) pixel size in a straight latitude/longitude grid. See the document dsp01_tm_landcover_doc.html for more information on the original data product that this is based on.


Image Specifications

Each image is 66 pixels by 60 lines and contains no leading header bytes. Each pixel in the image is represented by one byte. The DN value for each pixel is the percentage of the coverage that pixel that is of a given class. The sum of all of the percentages in the various images might not be 100 for a given pixel because of rounding.
 
Land Cover Maps, 10 by 5 minutes
class001_10by5min.img
class007_10by5min.img
class011_10by5min.img
class013_10by5min.img
class021_10by5min.img
class022_10by5min.img
class025_10by5min.img
class032_10by5min.img
class035_10by5min.img
class036_10by5min.img
class039_10by5min.img
class043_10by5min.img
class053_10by5min.img
class055_10by5min.img
class059_10by5min.img
class064_10by5min.img
class069_10by5min.img
class079_10by5min.img
class080_10by5min.img
class081_10by5min.img
class085_10by5min.img
class099_10by5min.img
class113_10by5min.img
class134_10by5min.img
class150_10by5min.img
class160_10by5min.img
class161_10by5min.img
class162_10by5min.img 

An additional image is included for which the DN value for each pixel is the percentage of the coverage of the CCRS mosaic in that pixel:

class00_10by5min.img
The class numbers correspond to the class numbers used by CCRS in their classification.
 
CCRS Land Cover Classification
Class ID Class Name
Class 0 Percent of data coverage area of image
Class 1 Water
Class 7 Coniferous high crown density black spruce
Class 11 Coniferous high crown density black spruce and Jack pine
Class 13 Burn recent bare area
Class 21 Coniferous high crown density black spruce younger
Class 22 Coniferous medium crown density jack pine
Class 25 Coniferous medium crown density black spruce
Class 32 Coniferous medium crown density black spruce, jack pine
Class 35 Burn recent sparse vegetation cover
Class 36 Mixed coniferous medium density
Class 39 Mixed coniferous high density
Class 43 Coniferous low crown density black spruce, jack pine
Class 53 Mixed forest
Class 55 Coniferous very low density
Class 59 Coniferous low crown density jack pine
Class 64 Old burns mixed regeneration cover
Class 69 Mixed deciduous forest
Class 79 Deciduous high crown density
Class 80 Deciduous medium crown density
Class 81 Older burns shrub-grass cover
Class 85 Shrubs and grassland
Class 99 Deciduous low broadleaf cover
Class 112 Bare disturbed areas sparse vegetation cover
Class 113 Burn rock outcrops
Class 134 Bare disturbed area
Class 150 Clouds
Class 160 Cropland high biomass
Class 161 Cropland medium biomass
Class 162 Cropland low biomass


The Pixel-Area Image

The file "0_pixel_area_10by5min.img" is an image that provides the area for each of the 10 by 5 minute cells. The area for each pixel is given in hectares. One hectare equals 10,000 square meters.
      Each pixel value is represented as a 2-byte integer. This image has the low-order byte first. On some systems, the bytes may need to be swapped in order the read the 2-byte integers correctly. On UNIX systems, this can be done with the following command.
dd if=input_file_name conv=swab of=output_file_name

Spatial Coverage

These data cover the same area as the regional meteorological parameters assembled by Val Pauwels. The data are in a straight latitude/longitude grid. The BOREAS grid coordinates listed below are simply given for reference purposes. The corner coordinates are identical to the upper left corner of Val's regional data set.
Corner          X         Y        Longitude         Latitude
---------------------------------------------------------------------
Upper Left    242.697   675.191  107°00'00.00" W   57°00'00.00" N
Upper Right   903.583   765.939   96°00'00.00" W   57°00'00.00" N
Lower Left    274.686   119.043  107°00'00.00" W   52°00'00.00" N
Lower Right  1022.683   221.752   96°00'00.00" W   52°00'00.00" N
The X and Y coordinates listed above are the BOREAS grid coordinates which are based on an Albers Equal Area Conic (AEAC) projection with the following parameters:
Origin: 111.00 deg W, 51.00 deg N
Standard Parallels: 52.5 deg N, 58.5 deg N
Units of Measure: kilometers


Regridded TM Mosaic Land Cover Maps, 30 min

These images were produced by aggregating the 30-m land cover Thematic Mapper classification by CCRS to a 0.5 degree by 0.5 degree (or 30' by 30') pixel size in a straight latitude/longitude grid. See the document dsp01_tm_landcover_doc.html for more information on the original data product that this is based on.


Image Specifications

Each image is 22 pixels by 10 lines and contains no leading header bytes. Each pixel in the image is represented by one byte. The DN value for each pixel is the percentage of the coverage that pixel that is of a given class. The sum of all of the percentages in the various images might not be 100 for a given pixel because of rounding.
 
Land Cover Maps, 30 minutes
class001_30min.img
class007_30min.img
class011_30min.img
class013_30min.img
class021_30min.img
class022_30min.img
class025_30min.img
class032_30min.img
class035_30min.img
class036_30min.img
class039_30min.img
class043_30min.img
class053_30min.img
class055_30min.img
class059_30min.img
class064_30min.img
class069_30min.img
class079_30min.img
class080_30min.img
class081_30min.img
class085_30min.img
class099_30min.img
class113_30min.img
class134_30min.img
class150_30min.img
class160_30min.img
class161_30min.img
class162_30min.img 

An additional image is included for which the DN value for each pixel is the percentage of the coverage of the CCRS mosaic in that pixel:

class00_30min.img
The class numbers correspond to the class numbers used by CCRS in their classification.
 
CCRS Land Cover Classification
Class ID Class Name
Class 0 Percent of data coverage area of image
Class 1 Water
Class 7 Coniferous high crown density black spruce
Class 11 Coniferous high crown density black spruce and Jack pine
Class 13 Burn recent bare area
Class 21 Coniferous high crown density black spruce younger
Class 22 Coniferous medium crown density jack pine
Class 25 Coniferous medium crown density black spruce
Class 32 Coniferous medium crown density black spruce, jack pine
Class 35 Burn recent sparse vegetation cover
Class 36 Mixed coniferous medium density
Class 39 Mixed coniferous high density
Class 43 Coniferous low crown density black spruce, jack pine
Class 53 Mixed forest
Class 55 Coniferous very low density
Class 59 Coniferous low crown density jack pine
Class 64 Old burns mixed regeneration cover
Class 69 Mixed deciduous forest
Class 79 Deciduous high crown density
Class 80 Deciduous medium crown density
Class 81 Older burns shrub-grass cover
Class 85 Shrubs and grassland
Class 99 Deciduous low broadleaf cover
Class 112 Bare disturbed areas sparse vegetation cover
Class 113 Burn rock outcrops
Class 134 Bare disturbed area
Class 150 Clouds
Class 160 Cropland high biomass
Class 161 Cropland medium biomass
Class 162 Cropland low biomass


Spatial Coverage

These data cover the same area as the regional meteorological parameters assembled by Val Pauwels. The data are in a straight latitude/longitude grid. The BOREAS grid coordinates listed below are simply given for reference purposes. The corner coordinates are identical to the upper left corner of
Val's regional data set.
Corner         X         Y      Longitude         Latitude
----------------------------------------------------------------
Upper Left   242.697  675.191  107°00'00.00" W  57°00'00.00" N
Upper Right  903.583  765.939   96°00'00.00" W  56°00'00.00" N
Lower Left   274.686  119.043  107°00'00.00" W  52°00'00.00" N
Lower Right 1022.683  221.752   96°00'00.00" W  52°00'00.00" N
The X and Y coordinates are the BOREAS grid coordinates which are based on an Albers Equal Area Conic (AEAC) projection with the following parameters:
Origin: 111.00 deg W, 51.00 deg N
Standard Parallels: 52.5 deg N, 58.5 deg N
Units of Measure: kilometers

References:


Steyaert, L.T., F.G. Hall, and T.R. Loveland. 1997. Land Cover Mapping, Fire Disturbance-Regeneration, and Multiresolution Land Cover Scaling Studies in the BOREAS Forest Ecosystem with Multiresolution 1-km AVHRR. J. Geophys. Res.102: 29581-29598.

Citation:

Cite this data set as follows (citation revised on October 30, 2002):

Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded TM Mosaic Land Cover Maps for 1994. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A.

Document ID:

dsp10_tm_mosaic

Document Revision Date:

27-Sept-2001 (citation revised on 30-Oct-2002)

Document Review Date:

27-Sept-2001

Document Curator:

webmaster@daac.ornl.gov

Document URL:

http://daac.ornl.gov/BOREAS/FollowOn/guides/dsp10_landcov_tm_mos_maps.html