BOREAS Follow-on DSP-10 Regridded Land Cover Maps, 54 km -------------------------------------------------------- Revised: March 2, 2001 These images were produced by aggregating the 1-km land cover classification by Lou Steyaert to a 54-km pixel size. 54-km roughly equals one-half a degree (30 minutes) of latitude.. See document "afm12_avhrr_class_doc.html" for more information on the original data product that this is based on. If there are any questions about how this aggregation was done, please contact Dave Knapp (David.Knapp@gsfc.nasa.gov). Image Specifications -------------------- The following files contain the percentage of each class within each 54-km pixel landcover_54km_class00.img landcover_54km_class01.img landcover_54km_class02.img landcover_54km_class03.img landcover_54km_class04.img landcover_54km_class05.img landcover_54km_class07.img landcover_54km_class09.img landcover_54km_class11.img landcover_54km_class12.img landcover_54km_class13.img landcover_54km_class14.img landcover_54km_class15.img landcover_54km_class16.img landcover_54km_class17.img landcover_54km_class18.img landcover_54km_class19.img landcover_54km_class20.img Each image is 16 pixels by 12 lines and contains no leading header bytes. Each pixel in the image is represented by one-byte. The class numbers correspond to the class numbers used by Lou Steyaert in his classification. There is no class 6, 8, or 10. Class 0 Outside of data area of image (edge pixels) Class 1 Wet Conifer (Low Stand Density) Class 2 Wet Conifer (Medium Stand Density) Class 3 Wet Conifer (High Stand Density) Class 4 Upland Conifer/Fen Class 5 Rock Outcrops/Bare Ground/ Sparse Vegetation/ Slow Regeneration Burn Areas Class 7 Open Water Class 9 Regeneration (North: within Canadian Shield Zone) Class 11 Recent Visible Burn Class 12 Rangeland/Pasture/Hay/Aspen Patches Class 13 Mixed Agriculture/Predominantly Grains Class 14 Mixed Agriculture/Predominantly Pasture/Hay Class 15 Grassland Marshes Class 16 Mixed Forest (80% Coniferous) Class 17 Mixed Forest (50% Coniferous) Class 18 Mixed Forest (80% Deciduous) Class 19 Regeneration (South: generally south of Shield Zone) Class 20 Unknown Spatial Coverage ---------------- These data cover the same area as the land cover classification from Lou Steyaert. The upper left corner is identical to the upper left corner of Lou Steyaert's classification. Due to rounding off to the nearest 54-km pixel, the other corners are in slightly different locations. Corner X Y Longitude Latitude -------------------------------------------------------------------------- Upper Left 174.0707 785.4531 108¡03'09.30" W 58¡01'07.68" N Upper Right 1038.0707 785.4531 93¡46'22.83" W 56¡53'37.06" N Lower Left 174.0707 137.4531 108¡27'13.26" W 52¡12'28.30" N Lower Right 1038.0707 137.4531 96¡02'33.91" W 51¡13'46.60" 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