BOREAS HYD-04 Standard Snow Course Data

7.3 Data Characteristics

7.3.1 Parameter/Variable

         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
STATION_ID
MEAN_SNOW_DENSITY_HYD04
MEAN_SWE
SDEV_SWE
MEAN_SNOW_DEPTH
COMMENTS
CRTFCN_CODE
REVISION_DATE


7.3.2 Variable Description/Definition

         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.
STATION_ID                     This is the station identifier from which the
                               measurement came.
MEAN_SNOW_DENSITY_HYD04        The mean snow density calculated from the
                               mean SWE divided by the mean of the
                               measured core depths.
MEAN_SWE                       Mean snow water equivalent (SWE) calculated
                               from the average snow depth times the mean snow
                               density.
SDEV_SWE                       Standard deviation of snow water equivalent
                               (SWE) measurements.
MEAN_SNOW_DEPTH                The mean depth of snow.
COMMENTS                       Descriptive information to clarify or enhance
                               the understanding of the other entered data.
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

         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
STATION_ID                     [none]
MEAN_SNOW_DENSITY_HYD04        [kilograms][meter^-3]
MEAN_SWE                       [millimeters]
SDEV_SWE                       [millimeters]
MEAN_SNOW_DEPTH                [millimeters]
COMMENTS                       [none]
CRTFCN_CODE                    [none]
REVISION_DATE                  [DD-MON-YYYY]


7.3.4 Data Source

         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      [Assigned by BORIS]
SUB_SITE                       [Assigned by BORIS]
DATE_OBS                       [Supplied by Investigator]
STATION_ID                     [Supplied by Investigator]
MEAN_SNOW_DENSITY_HYD04        [Supplied by Investigator]
MEAN_SWE                       [Supplied by Investigator]
SDEV_SWE                       [Supplied by Investigator]
MEAN_SNOW_DEPTH                [Supplied by Investigator]
COMMENTS                       [Supplied by Investigator]
CRTFCN_CODE                    [Assigned by BORIS]
REVISION_DATE                  [Assigned by BORIS]


7.3.5  Data Range

                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            NSA-9BS-9TETR  SSA-999-PAA01  None    None   None    None
SUB_SITE             HYD04-SWE01    HYD04-SWE01    None    None   None    None
DATE_OBS             15-NOV-1993    17-MAY-1996    None    None   None    None
STATION_ID           NIB            PAA            None    None   None    None
MEAN_SNOW_DENSITY_   58             400            -999    None   None    Blank
HYD04
MEAN_SWE             0              141            -999    None   None    None
SDEV_SWE             0              145            -999    None   None    None
MEAN_SNOW_DEPTH      0              794            -999    None   None    None
COMMENTS             N/A            N/A            None    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        26-JUN-1995    29-OCT-1996    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,STATION_ID,MEAN_SNOW_DENSITY_HYD04,MEAN_SWE,
SDEV_SWE,MEAN_SNOW_DEPTH,COMMENTS,CRTFCN_CODE,REVISION_DATE
'SSA-999-NIB01','HYD04-SWE01',01-APR-1996,'NIB',171,63,82,368,'','CPI',
29-OCT-1996
'SSA-999-NIB01','HYD04-SWE01',01-FEB-1995,'NIB',120,40,71,336,'','CPI',
28-MAR-1996
