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This documentation is an April, 1997 addition to the NDP-017 database 
for ARC/INFO geographic information system (GIS) users.  The olson-carbon.e00 file was
generated and annotated with the help of Tammy W. Beaty (beatytw@ornl.gov).  Questions
about the file can be addressed to her or to Robert M. Cushman (cushmanrm@ornl.gov).

The files, and this ndp017_gis.doc  file, are available, free of charge, from
CDIAC's anonymous FTP (File Transfer Protocol) area as follows:

  > ftp to cdiac.esd.ornl.gov (or 128.219.24.36)
  > enter 'anonymous' as user id
  > enter your e-mail address as password
  > cd pub/ndp017
  > dir
  > get filenames
  > bye

Note: for binary files, use the command:

  > bin

before the file transfer.

The database can also be accessed via the World Wide Web from CDIAC's 
homepage  http://cdiac.esd.ornl.gov as follows:
   click on Products
   click on CDIAC's Anonymous FTP Service
   click on CDIAC's Anonymous FTP Area
   click on ndp017
   click on any of the files
   click on table.html, world.gif, or world.ps (postscript file) for a visual image of the data

Or go directly to the visualization:
  http://cdiac.ESD.ORNL.GOV/ftp/ndp017/table.html

For non-FTP data acquisitions (e.g. IBM- or MacIntosh-formatted floppy
diskettes or CD), users may request data,
free of charge from CDIAC using the following address:

  Carbon Dioxide Information Analysis Center
  Oak Ridge National Laboratory
  Post Office Box 2008
  Oak Ridge, TN 37831-6335, USA

  Phone:  (865) 574-3645 or (865) 574-0390
  FAX:    (865) 574-2232
  E-Mail: cdiac@ornl.gov

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The exported ARC/INFO Version 7.0.2 polygon coverage, 
olson-carbon.e00.Z, was exported using the ARC/INFO export command with the
no file compression option.  The file was then compressed
using the unix compress command.  File olson-carbon.e00.Z  has a size of 1240021 k bytes.

To uncompress the file type:
uncompress olson-carbon.e00.Z

When uncompressed olson-carbon.e00 has a file size of
6768069 k bytes.

To retrieve the file, execute the following command from
within ARC/INFO software:

IMPORT COVER OLSON-CARBON OLSON-CARBON


Coverage Description:


   COVERAGE NAME:  OLSON-CARBON
    COVERAGE TYPE:  POLYGON
  NUMBER OF ITEMS:  11
NUMBER OF RECORDS:  6512

ITEM NAME      DESCRIPTION

AREA           ARC/INFO SYSTEM VARIABLE
PERIMETER      ARC/INFO SYSTEM VARIABLE
OLSON-CARBON#       ARC/INFO INTERNAL POLYGON ID NUMBER
OLSON-CARBON-ID          ARC/INFO EXTERNAL POLYGON ID NUMBER
GRID-CODE      Ecosystem Complex/Vegetation Code
MEAN-C              Medium carbon density (Kg C/m2)
MEAS-C              Revised medium carbon density (Kg C/m2)
MIN-C               Minimum carbon density (Kg C/m2)
MAX-C               Maximum carbon density (Kg C/m2)
NOTE           Description
SHADE               Carbon ranking and Color identifier

LIMITATIONS & RESTRICTIONS:

ARC/INFO has a character limitation that abbreviated the 
note item for the following carbon codes:

GRID-CODE SHADE     NOTE
55        12   Second Growth Field/Woods (Tropical/Temperate Woods/
          Fields/Grass/Scrub)
56         8   Second Growth Forest/Fields (Tropical/Subtropical
          Humid/ Temperate/Boreal Forests)
57         8   Second Growth Forest/Fields (Tropical/Subtropical
          Humid/ Temperate/Boreal Forests)
58        12   Second Growth Field/Woods (Tropical/Temperate Woods/   
          Fields/Grass/Scrub)

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