BOREAS HYD-01 Volumetric Soil Moisture 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
TUBE_ROD_ID
SOIL_MOIST_DEPTH
VOL_SOIL_MOIST
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.
TUBE_ROD_ID                    The identifier for the Tube or Rod at which the
                               data was collected.
SOIL_MOIST_DEPTH               Indicates the midpoint of the depth range at
                               which the soil moisture measurements were made.
VOL_SOIL_MOIST                 Contains the percent volumetric soil moisture
                               value.
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]
TUBE_ROD_ID                    [unitless]
SOIL_MOIST_DEPTH               [millimeters]
VOL_SOIL_MOIST                 [percent]
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.]
TUBE_ROD_ID                    [Supplied by Investigator.]
SOIL_MOIST_DEPTH               [Supplied by Investigator.]
VOL_SOIL_MOIST                 [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-FEN-FLXTR  SSA-YJP-FLXTR  None    None   None    None
SUB_SITE             9TE01-SMT01    HYD01-SMT25    None    None   None    None
DATE_OBS             25-MAY-1994    26-JUN-1997    None    None   None    None
TIME_OBS             0              2350           None    None   None    Blank
TUBE_ROD_ID          1              8              None    None   None    None
SOIL_MOIST_DEPTH     50             1650           None    None   None    None
VOL_SOIL_MOIST       1              900            -999    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        05-MAY-1995    26-OCT-1998    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,TUBE_ROD_ID,SOIL_MOIST_DEPTH,
VOL_SOIL_MOIST,CRTFCN_CODE,REVISION_DATE
'NSA-FEN-FLXTR','HYD01-SMT01',03-AUG-1994,,'1',75.0,-999.0,'CPI',05-MAY-1995
'NSA-FEN-FLXTR','HYD01-SMT01',03-AUG-1994,,'1',750.0,94.0,'CPI',05-MAY-1995
