BOREAS Follow-on DSP-10 Regridded LAI Maps for 1994, 54 km
----------------------------------------------------------
Revised: March 2001

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 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 average LAI within each 54-km pixel:

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)

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 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.   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