Maps included in this data set:
Regridded Land Cover Maps,
2 kilometers
Regridded Land Cover
Maps, 10 by 5 minutes
Regridded Land Cover Maps,
54 km
Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded 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.
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
These regridded maps may utilize class numbers that correspond to Lou Steyaert's AFM-12 classification or include data that cover the same area as the land cover classification. When referenced in the regridded map description, please refer to the following Land Cover Classification table. For more information, please access the following BOREAS data set and documentation.
BOREAS AFM-12 1-km AVHRR Seasonal Land Cover Classification
This regional land cover data set was developed as part of a multitemporal
1-km AVHRR land cover analysis approach that was used as the basis for
regional land cover mapping, fire disturbance-regeneration, and multiresolution
land cover scaling studies in the boreal forest ecosystem of central Canada
(Steyaert et al., 1997). This land cover classification was derived
by using regional field observations from ground and low-level aircraft
transits to analyze spectral-temporal clusters that were derived from an
unsupervised cluster analysis of monthly NDVI image composites (April-September
1992). This regional data set was developed for use by BOREAS investigators,
especially those involved in simulation modeling, remote sensing algorithm
development, and aircraft flux studies. Based on regional field data
verification, this multitemporal 1-km AVHRR land cover mapping approach
was effective in characterizing the biome-level land cover structure, embedded
spatially heterogeneous landscape patterns, and other types of key land
cover information of interest to BOREAS modelers.
|
|
|
| Class ID | Class Name |
|---|---|
| 1 | Wet Conifer (Low Stand Density) |
| 2 | Wet Conifer (Medium Stand Density) |
| 3 | Wet Conifer (High Stand Density) |
| 4 | Upland Conifer/Fen |
| 5 | Rock Outcrops/Bare Ground/Sparse Vegetation/
Slow Regeneration Burn Areas |
| 6 | NA |
| 7 | Open Water |
| 8 | NA |
| 9 | Regeneration (North: Within Canadian Shield Zone) |
| 10 | NA |
| 11 | Recent Visible Burn |
| 12 | Rangeland/Pasture/Hay/Aspen Patches |
| 13 | Mixed Agriculture/Predominately Grains |
| 14 | Mixed Agriculture/Predominately Pasture/Hay |
| 15 | Grassland Marshes |
| 16 | Mixed Forest (80% Coniferous) |
| 17 | Mixed Forest (50% Coniferous) |
| 18 | Mixed Forest (80% Deciduous) |
| 19 | Regeneration (South: generally south of Shield Zone) |
| 20 | Unknown |
These images were produced by aggregating the 1-km land cover classification
by Lou Steyaert to a 2-km pixel size. The following files contain the percentage
of each class within each 2-km pixel. The pixel values will be either 0,
25, 50, 75, or 100, since exactly four 1-km pixels are nested within a
2-km pixel.
See the document AFM12_AVHRR_CLASS.html
for more information on the original data product that this is based on.
| Land Cover maps, 2km |
|---|
|
class01_2km.img class02_2km.img class03_2km.img class04_2km.img class05_2km.img class07_2km.img class09_2km.img class11_2km.img class12_2km.img class13_2km.img class14_2km.img class15_2km.img class16_2km.img class17_2km.img class18_2km.img class19_2km.img class20_2km.img |
Corner X Y Longitude Latitude ---------------------------------------------------------------------- Upper Left 174.0707 785.4531 108°03'09.30" W 58°01'07.68" N Upper Right 1036.0707 785.4531 93°48'17.52" W 56°53'52.87" N Lower Left 174.0707 113.4531 108°27'59.25" W 51°59'32.04" N Lower Right 1036.0707 113.4531 96°08'36.17" W 51°01'20.43" NThe X and Y coordinates are the BOREAS grid coordinates which are based on an Albers Equal Area Conic (AEAC) projection with the following parameters:
These images were produced by aggregating the 1-km land cover classification
by Lou Steyaert to a 10' (horizontal) by 5' (vertical) pixel size in a
straight latitude/longitude grid.
See the document AFM12_AVHRR_CLASS.html
for more information on the original data product that this is based on.
The following files contain the percentage of each class within each 10' by 5' pixel.
| Land Cover Maps, 10 by 5 minutes |
|---|
|
landcover01_10by5min.img landcover02_10by5min.img landcover03_10by5min.img landcover04_10by5min.img landcover05_10by5min.img landcover07_10by5min.img landcover09_10by5min.img landcover11_10by5min.img landcover12_10by5min.img landcover13_10by5min.img landcover14_10by5min.img landcover15_10by5min.img landcover16_10by5min.img landcover17_10by5min.img landcover18_10by5min.img landcover19_10by5min.img landcover20_10by5min.img |
dd if=input_file_name conv=swab of=output_file_name
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" NThe 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:
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 the document AFM12_AVHRR_CLASS.html
for more information on the original data product that this is based on.
The following files contain the percentage of each class within each 54-km pixel.
| Land Cover Maps, 54 km |
|---|
|
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 |
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" NThe X and Y coordinates are the BOREAS grid coordinates which are based on an Albers Equal Area Conic (AEAC) projection with the following parameters:
Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded 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.