Existing 1-km moss cover classifications were reprocessed and are
now available at multiple resolutions (2 km, 10x5 minutes, and
0.5 degree). These data were regridded for use by the BOREAS
Follow-on Carbon and Hydro-Meteorological modeling groups to have a number
of data sets available in common grid projections and scales for intercomparison
studies. Characteristics of the individual products are described below.
Maps included in this data set:
Regridded
Moss Cover Maps, 2 kilometers
Regridded
Moss Cover Maps, 10 by 5 minutes
Regridded
Moss Cover Maps, 54 km
Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded Moss 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 moss maps to
a 2-km pixel size. The original 1-km moss map was derived from the 1-km
land cover classification that was done by Lou Steyaert.
See the document dsp09_moss_cover_doc.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 2-km pixel. Th pixel values will be either 0, 25, 50, 75, or 100, since exactly four 1-km pixels are nested within a 2-km pixel.
| Moss Cover Maps, 2km |
|---|
|
moss01_2km.img moss02_2km.img moss03_2km.img moss04_2km.img moss05_2km.img moss06_2km.img |
The class numbers correspond to the class numbers used by Gloria Rapalee
in her classification.
|
|
|
| Class ID | Class Name |
|---|---|
| Class 0 | Outside of data area of image (edge pixels) |
| Class 1 | Feather Moss |
| Class 2 | Feather Moss/Sphagnum |
| Class 3 | Sphagnum |
| Class 4 | Feather/Brown/Spagnum Moss Mix |
| Class 5 | No Moss |
| Class 6 | Water |
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 moss cover classification
by Gloria Rapalee to a 10' (horizontal) by 5' (vertical)pixel size in a
straight latitude/longitude grid. This moss classification is based on
Lou Steyaert's land cover classification.
See the document dsp09_moss_cover_doc.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.
| Moss Cover Maps, 10 by 5 minutes |
|---|
|
moss01_10by5min.img moss02_10by5min.img moss03_10by5min.img moss04_10by5min.img moss05_10by5min.img moss06_10by5min.img |
The class numbers correspond to the class numbers used by Gloria Rapalee
in her classification.
|
|
|
| Class ID | Class Name |
|---|---|
| Class 0 | Outside of data area of image (edge pixels) |
| Class 1 | Feather Moss |
| Class 2 | Feather Moss/Sphagnum |
| Class 3 | Sphagnum |
| Class 4 | Feather/Brown/Spagnum Moss Mix |
| Class 5 | No Moss |
| Class 6 | Water |
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 moss maps to
a 54-km pixel size. 54-km roughly equals one-half a degree (30 minutes)
of latitude. The original 1-km moss map was derived from the 1-km land
cover classification that was done by Lou Steyaert.
See the document dsp09_moss_cover_doc.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.
| Moss Cover Maps, 54 km |
|---|
|
moss01_54km.img moss02_54km.img moss03_54km.img moss04_54km.img moss05_54km.img moss06_54km.img |
The class numbers correspond to the class numbers used by Gloria Rapalee
in her classification.
|
|
|
| Class ID | Class Name |
|---|---|
| Class 0 | Outside of data area of image (edge pixels) |
| Class 1 | Feather Moss |
| Class 2 | Feather Moss/Sphagnum |
| Class 3 | Sphagnum |
| Class 4 | Feather/Brown/Spagnum Moss Mix |
| Class 5 | No Moss |
| Class 6 | Water |
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:
Origin: 111.00 deg W, 51.00 deg N Standard Parallels: 52.5 deg N, 58.5 deg N Units of Measure: kilometers
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.
Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded Moss 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.