BOREAS RSS-03 Reflectance Measured from a Helicopter-Mounted SE-590

7.3 Data Characteristics

7.3.1 Parameter/Variable

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

Data File
         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME
WAVELENGTH
MEAN_RADIANCE
SDEV_RADIANCE
MEAN_REFL
MEAN_SURF_REFL
GASEOUS_TRANSMITTANCE
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:

Data File
         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                           The Greenwich Mean Time (GMT) when the data were
                               collected.
WAVELENGTH                     Spectral wavelength at which measurement was
                               acquired.
MEAN_RADIANCE                  The mean at-sensor radiance.
SDEV_RADIANCE                  The standard deviation at-sensor radiance.
MEAN_REFL                      The mean reflectance factor.
MEAN_SURF_REFL                 The mean surface reflectance factor 
                               (atmospherically corrected).
GASEOUS_TRANSMITTANCE          One minus the absorptance and reflectance of the
                               atmosphere (two-way) due to global gases 
                               (primarily water vapor and ozone).
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.

The OP_GRID_INFO in the SE590 reference data are tightly linked to the 
Helicopter log documentation;  much information relevant to the location of the 
observation and the conditions at the time are available in the log. 

7.3.3 Unit of Measurement

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

Data File
         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME                           [HHMMSS GMT]
WAVELENGTH                     [micrometers]
MEAN_RADIANCE                  [Watts][meter^-2][steradian^-1][micrometer^-1]
SDEV_RADIANCE                  [Watts][meter^-2][steradian^-1][micrometer^-1]
MEAN_REFL                      [percent]
MEAN_SURF_REFL                 [unitless]
GASEOUS_TRANSMITTANCE          [unitless]
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:

Data File
         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      [Assigned by BORIS Staff]
SUB_SITE                       [Assigned by BORIS Staff]
DATE_OBS                       [Controller]
TIME                           [Controller]
WAVELENGTH                     [SE-590 spectroradiometer]
MEAN_RADIANCE                  [SE-590 spectroradiometer]
SDEV_RADIANCE                  [Calculated by software]
MEAN_REFL                      [Calculated by software]
MEAN_SURF_REFL                 [Calculated by software]
GASEOUS_TRANSMITTANCE          [Calculated by software]
CRTFCN_CODE                    [Assigned by BORIS Staff]
REVISION_DATE                  [Assigned by BORIS Staff]

7.3.5 Data Range

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

Data File
                     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-YJP-FLXTR  None    None   None    None
SUB_SITE             RSS03-SE501    RSS03-SE501    None    None   None    None
DATE_OBS             31-MAY-1994    16-SEP-1994    None    None   None    None
TIME                 143212         225100         None    None   None    None
WAVELENGTH           .4026          .9007          None    None   None    None
MEAN_RADIANCE        1.5            112.11         None    None   None    None
SDEV_RADIANCE        .034           10.011         None    None   None    None
MEAN_REFL            .4             44.9           None    None   None    None
MEAN_SURF_REFL       0              49.3           -999    None   None    None
GASEOUS_             .77            1              None    None   None    None
TRANSMITTANCE
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        02-JUN-1998    05-JUN-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,WAVELENGTH,MEAN_RADIANCE,SDEV_RADIANCE,
MEAN_REFL,MEAN_SURF_REFL,GASEOUS_TRANSMITTANCE,CRTFCN_CODE,REVISION_DATE
'NSA-9BS-9TETR','RSS03-SE501',07-JUN-1994,180946,.4026,4.8,.184,1.2,.9,1.0,
'CPI',02-JUN-1998
'NSA-9BS-9TETR','RSS03-SE501',07-JUN-1994,180946,.4053,5.28,.206,1.3,1.0,1.0,
'CPI',02-JUN-1998