BOREAS Follow-on DSP-10 Regridded LAI Maps for 1994, 2 kilometers
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Revised: March 2, 2001

These images were produced by averaging the 1-km LAI maps by Jing Chen to 
a 2-km pixel size.

See document "rss07_avhrr_lai_fpar_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 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.

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)

Each image is 431 pixels by 336 lines and contains no leading header bytes.
Each pixel in the image is represented by one-byte.

The DN for each pixel can be converted to LAI with the following equation:

LAI = (DN - 1) / 10


Spatial Coverage
----------------
These data cover the same area as the land cover classification from Lou
Steyaert. 

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" 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