Maps included in this data set:
Regridded LAI Maps for 1994,
2 kilometers
Regridded LAI Maps
for 1994, 10 by 5 minutes
Regridded FPAR Maps
for 1994, 10 by 5 minutes
Regridded LAI Maps for 1994,
54 km
Hall, F., G. Rapalee, and D. Knapp. 2001. BOREAS Follow-On DSP-10 Regridded FPAR and LAI 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
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 averaging the 1-km LAI maps by Jing
Chen to a 2-km pixel size. See the document BOREAS
RSS-07 Regional LAI and FPAR Images From Ten-Day AVHRR-LAC Composites
for more information on the original data product that this is based on.
LAI = (DN - 1) / 10The 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.
| LAI Maps, 2km |
|---|
| 94-05-21_lai_2km.img (May 21-31, 1994)
94-07-21_lai_2km.img (July 21-31, 1994) 94-09-01_lai_2km.img (September 1-10, 1994) |
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:
There are two sets of images associated with this document. These
images were produced by averaging the 1-km LAI maps by Jing Chen to a 10'
(horizontal) by 5' (vertical) pixel size in a straight latitude/longitude
grid. See the document BOREAS
RSS-07 Regional LAI and FPAR Images From Ten-Day AVHRR-LAC Composites
for more information on the original data product that this is based on.
LAI = (DN - 1) / 10The first image product is the "Average LAI Maps", where each pixel represents the average LAI of the1-km pixels that fall in each 10' by 5' pixel.
| Average LAI Maps, 10 by 5 minutes |
|---|
| 94-05-21_lai_10by5min.img (May 21-31, 1994)
94-07-21_lai_10by5min.img (July 21-31, 1994) 94-09-01_lai_10by5min.img (September 1-10, 1994) |
The second image product is the "Average LAI by Land Cover Class Maps", where each pixel DN represents the average LAI of the 1-km pixels of the given land cover class that falls in each 10' by 5' pixel.
| Average LAI by Land Cover Class Maps, 10 by 5 minutes | ||
|---|---|---|
| LAI from 21-31 May 1994 | LAI from 21-31 Jul 1994 | LAI from 01-10 Sep 1994 |
| 94-05-21_lai_class00.img
94-05-21_lai_class01.img 94-05-21_lai_class02.img 94-05-21_lai_class03.img 94-05-21_lai_class04.img 94-05-21_lai_class05.img 94-05-21_lai_class06.img 94-05-21_lai_class07.img 94-05-21_lai_class08.img 94-05-21_lai_class09.img 94-05-21_lai_class10.img 94-05-21_lai_class11.img 94-05-21_lai_class12.img 94-05-21_lai_class13.img 94-05-21_lai_class14.img 94-05-21_lai_class15.img 94-05-21_lai_class16.img 94-05-21_lai_class17.img 94-05-21_lai_class18.img 94-05-21_lai_class19.img 94-05-21_lai_class20.img |
94-07-21_lai_class00.img
94-07-21_lai_class01.img 94-07-21_lai_class02.img 94-07-21_lai_class03.img 94-07-21_lai_class04.img 94-07-21_lai_class05.img 94-07-21_lai_class06.img 94-07-21_lai_class07.img 94-07-21_lai_class08.img 94-07-21_lai_class09.img 94-07-21_lai_class10.img 94-07-21_lai_class11.img 94-07-21_lai_class12.img 94-07-21_lai_class13.img 94-07-21_lai_class14.img 94-07-21_lai_class15.img 94-07-21_lai_class16.img 94-07-21_lai_class17.img 94-07-21_lai_class18.img 94-07-21_lai_class19.img 94-07-21_lai_class20.img |
94-09-01_lai_class00.img
94-09-01_lai_class01.img 94-09-01_lai_class02.img 94-09-01_lai_class03.img 94-09-01_lai_class04.img 94-09-01_lai_class05.img 94-09-01_lai_class06.img 94-09-01_lai_class07.img 94-09-01_lai_class08.img 94-09-01_lai_class09.img 94-09-01_lai_class10.img 94-09-01_lai_class11.img 94-09-01_lai_class12.img 94-09-01_lai_class13.img 94-09-01_lai_class14.img 94-09-01_lai_class15.img 94-09-01_lai_class16.img 94-09-01_lai_class17.img 94-09-01_lai_class18.img 94-09-01_lai_class19.img 94-09-01_lai_class20.img |
Example: The file "94-05-21_lai_class18.img" represents the average
LAI of the 1-km pixels (from 21-31 May 1994 LAI image) that are of class
18. The class numbers correspond to the class numbers from Lou Steyaert's
AFM-12 classification. There is no class 6, 8, or 10 in Lou Steyaert's
classification, thus there are no images representing the average LAI for
those class numbers.
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 are the BOREAS grid coordinates which are based on an Albers Equal Area Conic (AEAC) projection with the following parameters:
Units of Measure: kilometers
These images were produced by averaging the 1-km FPAR maps by Jing
Chen to a 10' (horizontal) by 5' (vertical) pixel size in a straight latitude/longitude
grid. Each pixel DN represents the average FPAR of the1-km pixels of the
given land cover class that falls in each 10' by 5' pixel.
See the document BOREAS
RSS-07 Regional LAI and FPAR Images From Ten-Day AVHRR-LAC Composites
for more information on the original data product that this is based on.
FPAR = (DN - 1) / 100A DN of 255 indicates that there were no 1-km pixels of the given class within the 10' by 5' pixel area. Therefore, there is no average LAI value for that class.
| FPAR Maps, 10 by 5 minutes | ||
|---|---|---|
|
|
|
|
| 94-05-21_fpar_class00.img
94-05-21_fpar_class01.img 94-05-21_fpar_class02.img 94-05-21_fpar_class03.img 94-05-21_fpar_class04.img 94-05-21_fpar_class05.img 94-05-21_fpar_class06.img 94-05-21_fpar_class07.img 94-05-21_fpar_class08.img 94-05-21_fpar_class09.img 94-05-21_fpar_class10.img 94-05-21_fpar_class11.img 94-05-21_fpar_class12.img 94-05-21_fpar_class13.img 94-05-21_fpar_class14.img 94-05-21_fpar_class15.img 94-05-21_fpar_class16.img 94-05-21_fpar_class17.img 94-05-21_fpar_class18.img 94-05-21_fpar_class19.img 94-05-21_fpar_class20.img |
94-07-21_fpar_class00.img
94-07-21_fpar_class01.img 94-07-21_fpar_class02.img 94-07-21_fpar_class03.img 94-07-21_fpar_class04.img 94-07-21_fpar_class05.img 94-07-21_fpar_class06.img 94-07-21_fpar_class07.img 94-07-21_fpar_class08.img 94-07-21_fpar_class09.img 94-07-21_fpar_class10.img 94-07-21_fpar_class11.img 94-07-21_fpar_class12.img 94-07-21_fpar_class13.img 94-07-21_fpar_class14.img 94-07-21_fpar_class15.img 94-07-21_fpar_class16.img 94-07-21_fpar_class17.img 94-07-21_fpar_class18.img 94-07-21_fpar_class19.img 94-07-21_fpar_class20.img |
94-09-01_fpar_class00.img
94-09-01_fpar_class01.img 94-09-01_fpar_class02.img 94-09-01_fpar_class03.img 94-09-01_fpar_class04.img 94-09-01_fpar_class05.img 94-09-01_fpar_class06.img ** 94-09-01_fpar_class07.img 94-09-01_fpar_class08.img ** 94-09-01_fpar_class09.img 94-09-01_fpar_class10.img ** 94-09-01_fpar_class11.img 94-09-01_fpar_class12.img 94-09-01_fpar_class13.img 94-09-01_fpar_class14.img 94-09-01_fpar_class15.img 94-09-01_fpar_class16.img 94-09-01_fpar_class17.img 94-09-01_fpar_class18.img 94-09-01_fpar_class19.img 94-09-01_fpar_class20.img |
Example: The file "94-05-21_fpar_class18.img" represents the average
FPAR of the 1-km pixels (from 21-31 May 1994 FPAR image) that are of class
18. The class numbers correspond to the class numbers from Lou Steyaert's
AFM-12 classification. There is no class 6, 8, or 10 in Lou Steyaert's
classification, thus there are no images representing the average FPAR
for those class numbers.
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 averaging the 1-km LAI maps by Jing
Chen to a 54-km pixel size. 54-km roughly equals one-half a degree (30
minutes) of latitude. See the document BOREAS
RSS-07 Regional LAI and FPAR Images From Ten-Day AVHRR-LAC Composites
for more information on the original data product that this is based on.
.
LAI = (DN - 1) / 10The following files contain the average LAI within each 54-km pixel.
| Average LAI Maps, 54 km |
|---|
| 94-05-21_lai_54km.img (May 21-31, 1994)
94-07-21_lai_54km.img (July 21-31, 1994) 94-09-01_lai_54km.img (September 1-10, 1994) |
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 FPAR and LAI 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.