BOREAS HYD-08 1994 Gravimetric Moss Data

7.3 Data Characteristics

7.3.1 Parameter/Variable

The parameters contained in the data files on the CD-ROM are:

         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
PLOT_ID
WEIGHT
MEASUREMENT_TYPE
CRTFCN_CODE
REVISION_DATE


7.3.2 Variable Description/Definition

The descriptions of the parameters contained in the data files on the CD-ROM 
are:

         Column Name                             Description
------------------------------ ------------------------------------------------
SITE_NAME                      The identifier assigned to the site by BOREAS,
                               in the format SSS-TTT-CCCCC, where SSS identifies
                               the portion of the study area: NSA, SSA, REG,
                               TRN, and TTT identifies the cover type for the
                               site, 999 if unknown, and CCCCC is the identifier
                               for site, exactly what it means will vary with 
                               site type.
SUB_SITE                       The identifier assigned to the sub-site by
                               BOREAS, in the format GGGGG-IIIII, where GGGGG is
                               the group associated with the sub-site 
                               instrument, e.g. HYD06 or STAFF, and IIIII is the
                               identifier for sub-site, often this will refer to
                               an instrument.
DATE_OBS                       The date on which the data were collected.
TIME_OBS                       The Greenwich Mean Time (GMT) when the data were
                               collected.
PLOT_ID                        The identifier for the plot from which the
                               measurement came.

The following is needed to decode the PLOT_ID value.  The characters indicate 
the layer(s) of moss that are in the turf and whether the turf had plastic 
applied to it or not.

L : The litter layer is included.
F : The fibric layer is included.
H : The humus layer is included.
# : A number indicating the plot number of the turf.
p : plastic was applied, restricting the flow of water out of the turf.

WEIGHT                         The weight of the sample (including tray).
MEASUREMENT_TYPE               Indicates whether the measurement was a "WET"
                               measurement during the course of the field season
                               or a "DRY" measurement after the field season
                               was over.

The information regarding MEASUREMENT_TYPE indicates whether the turf is WET or 
DRY.  There is only one DRY measurement per turf, since the dry measurement was 
made when the turf was removed from the field, dried, and weighed in a lab.  

CRTFCN_CODE                    The BOREAS certification level of the data.
                               Examples are CPI (Checked by PI), CGR (Certified
                               by Group), PRE (Preliminary), and CPI-??? (CPI
                               but questionable).
REVISION_DATE                  The most recent date when the information in the
                               referenced data base table record was revised.

7.3.3 Unit of Measurement

The measurement units for the parameters contained in the data files on
the CD-ROM are:

         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
PLOT_ID                        [none]
WEIGHT                         [grams]
MEASUREMENT_TYPE               [none]
CRTFCN_CODE                    [none]
REVISION_DATE                  [DD-MON-YYYY]


7.3.4 Data Source

The source of the parameter values contained in the data files on
the CD-ROM are:

         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      [Assigned by BORIS]
SUB_SITE                       [Assigned by BORIS]
DATE_OBS                       [Supplied by Investigator]
TIME_OBS                       [Supplied by Investigator]
PLOT_ID                        [Supplied by Investigator]
WEIGHT                         [Supplied by Investigator]
MEASUREMENT_TYPE               [Supplied by Investigator]
CRTFCN_CODE                    [Assigned by BORIS]
REVISION_DATE                  [Assigned by BORIS]


7.3.5  Data Range

The following table gives information about the parameter values found in
the data files on the CD-ROM.

                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            NSA-9BS-HYD08  NSA-OBS-FLXTR  None    None   None    None
SUB_SITE             HYD08-MOS01    HYD08-MOS02    None    None   None    None
DATE_OBS             25-JUN-1994    16-SEP-1994    None    None   None    None
TIME_OBS             18             2309           None    None   None    None
PLOT_ID              L1             LFH4p          None    None   None    None
WEIGHT               18.07          1909.21       -99.9    None   None    None
MEASUREMENT_TYPE     DRY            WET            None    None   None    None
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        07-JUL-1997    10-JUL-1997    None    None   None    None
--------------------------------------------------------------------------------
Minimum Data Value -- The minimum value found in the column.
Maximum Data Value -- The maximum value found in the column.
Missng Data Value  -- The value that indicates missing data. This is used to
                      indicate that an attempt was made to determine the
                      parameter value, but the attempt was unsuccessful.
Unrel Data Value   -- The value that indicates unreliable data.  This is used
                      to indicate an attempt was made to determine the
                      parameter value, but the value was deemed to be
                      unreliable by the analysis personnel.
Below Detect Limit -- The value that indicates parameter values below the
                      instruments detection limits.  This is used to
                      indicate that an attempt was made to determine the
                      parameter value, but the analysis personnel determined
                      that the parameter value was below the detection
                      limit of the instrumentation.
Data Not Cllctd    -- This value indicates that no attempt was made to
                      determine the parameter value.  This usually
                      indicates that BORIS combined several similar but
                      not identical data sets into the same data base table
                      but this particular science team did not
                      measure that parameter.

Blank -- Indicates that blank spaces are used to denote that type of value.
N/A   -- Indicates that the value is not applicable to the respective column.
None  -- Indicates that no values of that sort were found in the column.
--------------------------------------------------------------------------------


7.4 Sample Data Record

SITE_NAME,SUB_SITE,DATE_OBS,TIME_OBS,PLOT_ID,WEIGHT,MEASUREMENT_TYPE,
CRTFCN_CODE,REVISION_DATE
'NSA-9BS-HYD08','HYD08-MOS01',25-JUN-1994,1800,'L1p',141.5,'WET','CPI',
10-JUL-1997
'NSA-9BS-HYD08','HYD08-MOS01',25-JUN-1994,1800,'LF1p',267.6,'WET','CPI',
10-JUL-1997
