BOREAS RSS-04 1994 Southern Study Area Jack Pine LAI & fPAR Data

7.3 Data Characteristics

7.3.1 Parameter/Variable

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

LAI from LAI-2000:
         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
OP_GRID_ID
MASK
NUM_OBS
LAI_STD_METHOD
MTA_STD_METHOD
LAI_LANG_METHOD
MTA_LANG_METHOD
LAI_ELLIP_METHOD
MTA_ELLIP_METHOD
LAI_CLS_METHOD
MTA_CLS_METHOD
GROUP_PLOT
COMMENTS
CRTFCN_CODE
REVISION_DATE

LAI from Ceptometer:
         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
OP_GRID_ID
LOCATION
LAI
FPAR
GROUP_PLOT
COMMENTS
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:

LAI from LAI-2000:
         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.
OP_GRID_ID                     The identifier given to the BOREAS auxiliary and 
                               tower sites during the execution of field 
                               operations.  An example of this is B9B7A.
MASK                           A number representing the presence or absence of
                               five azmuthal viewing mask rings for each 
                               measurement.
NUM_OBS                        Number of observations of the given sample used
                               to calculate given values.
LAI_STD_METHOD                 Leaf angle index calculated by the standard 
                               method with the LICOR LAI-2000.
MTA_STD_METHOD                 Mean tip angle calculated by the standard method
                               with the LICOR LAI-2000.
LAI_LANG_METHOD                Leaf angle index calculated by the slope/
                               intercept method of Lang (1987) with the LICOR 
                               LAI-2000.
MTA_LANG_METHOD                Mean tip angle calculated by the slope/intercept
                               method of Lang (1987) with the LICOR LAI-2000.
LAI_ELLIP_METHOD               Leaf angle index calculated by the elliptical 
                               distribution method of Norman and Campbell (1989)
                               with the LICOR LAI-2000.
MTA_ELLIP_METHOD               Elliptical distribution method of Norman and 
                               Campbell (1989) for determining the mean tip 
                               angle with the LICOR LAI-2000.
LAI_CLS_METHOD                 Leaf angle index calculated by the constrained 
                               least squares method of Norman and Campbell 
                               (1989) with the LICOR LAI-2000.
MTA_CLS_METHOD                 Mean tip angle calculated by the constrained 
                               least squares method of Norman and Campbell 
                               (1989)with the LICOR LAI-2000.
GROUP_PLOT                     Group associated with or who has defined location
                               information.
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.

LAI from Ceptometer:

         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.
OP_GRID_ID                     The identifier given to the BOREAS auxiliary and 
                               tower sites during the execution of field 
                               operations.  An example of this is B9B7A.
LOCATION                       Specific position within the site, relative to
                               the tower.
LAI                            Leaf area index calculated from Ceptometer 
                               measurements.
FPAR                           Fraction of photosythetically active radiation 
                               measured from Ceptometer instrument.
GROUP_PLOT                     Group associated with or who has defined location
                               information.
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

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

LAI from LAI-2000:
         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
OP_GRID_ID                     [none]
MASK                           [unitless]
NUM_OBS                        [counts]
LAI_STD_METHOD                 [unitless]
MTA_STD_METHOD                 [degrees]
LAI_LANG_METHOD                [unitless]
MTA_LANG_METHOD                [degrees]
LAI_ELLIP_METHOD               [unitless]
MTA_ELLIP_METHOD               [degrees]
LAI_CLS_METHOD                 [unitless]
MTA_CLS_METHOD                 [degrees]
GROUP_PLOT                     [none]
COMMENTS                       [none]
CRTFCN_CODE                    [none]
REVISION_DATE                  [DD-MON-YYYY]

LAI from Ceptometer:
         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
OP_GRID_ID                     [none]
LOCATION                       [none]
LAI                            [unitless]
FPAR                           [unitless]
GROUP_PLOT                     [none]
COMMENTS                       [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:

LAI from LAI-2000:
         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      [Assigned by BORIS Staff]
SUB_SITE                       [Assigned by BORIS Staff]
DATE_OBS                       [Observer]
TIME_OBS                       [Observer]
OP_GRID_ID                     [BOREAS Experiment Plan]
MASK                           [LAI-2000]
NUM_OBS                        [LAI-2000]
LAI_STD_METHOD                 [LAI-2000, calculated]
MTA_STD_METHOD                 [LAI-2000, calculated]
LAI_LANG_METHOD                [LAI-2000, calculated]
MTA_LANG_METHOD                [LAI-2000, calculated]
LAI_ELLIP_METHOD               [LAI-2000, calculated]
MTA_ELLIP_METHOD               [LAI-2000, calculated]
LAI_CLS_METHOD                 [LAI-2000, calculated]
MTA_CLS_METHOD                 [LAI-2000, calculated]
GROUP_PLOT                     [RSS04 team]
COMMENTS                       [RSS04 team]
CRTFCN_CODE                    [Assigned by BORIS Staff]
REVISION_DATE                  [Assigned by BORIS Staff]

LAI from Ceptometer:
         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      [Assigned by BORIS Staff]
SUB_SITE                       [Assigned by BORIS Staff]
DATE_OBS                       [Observer]
TIME_OBS                       [Observer]
OP_GRID_ID                     [BOREAS Experiment Plan]
LOCATION                       [RSS04 team]
LAI                            [Ceptometer]
FPAR                           [Ceptometer]
GROUP_PLOT                     [RSS04 team]
COMMENTS                       [RSS04 team]
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.

LAI from LAI-2000:
                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            SSA-9JP-AUX02  SSA-YJP-FLXTR  None    None   None    None
SUB_SITE             RSS04-LAI01    RSS04-LAI01    None    None   None    None
DATE_OBS             14-AUG-1993    05-AUG-1994    None    None   None    None
TIME_OBS             122            2030           None    None   None    None
OP_GRID_ID           F5I6P          G9L0P          None    None   None    None
MASK                 1111           11111          None    None   None    None
NUM_OBS              10             40             None    None   None    None
LAI_STD_METHOD       1.09           3.54           None    None   None    None
MTA_STD_METHOD       43             73             None    None   None    None
LAI_LANG_METHOD      1.03           3.82           None    None   None    None
MTA_LANG_METHOD                                    -999    None   None    None
LAI_ELLIP_METHOD     .92            3.69           None    None   None    None
MTA_ELLIP_METHOD     31             75             None    None   None    None
LAI_CLS_METHOD       .92            3.53           None    None   None    None
MTA_CLS_METHOD       31             69             None    None   None    None
GROUP_PLOT           None           TE-13          None    None   None    None
COMMENTS             N/A            N/A            None    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        03-AUG-1995    25-OCT-1996    None    None   None    None


LAI from Ceptometer:
                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            SSA-9BS-AUX01  SSA-YJP-FLXTR  None    None   None    None
SUB_SITE             RSS04-LAI01    RSS04-LAI01    None    None   None    None
DATE_OBS             19-AUG-1993    04-AUG-1994    None    None   None    None
TIME_OBS             0              2357           None    None   None    None
OP_GRID_ID           D0H6S          G9L0P          None    None   None    None
LOCATION             0              90 m           None    None   None    None
LAI                  .11            7.81           None    None   None    None
FPAR                 .04            .96            None    None   None    None
GROUP_PLOT           RSS-1          TE-6           None    None   None    None
COMMENTS             N/A            N/A            None    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        07-AUG-1995    25-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

LAI from LAI-2000:

SITE_NAME,SUB_SITE,DATE_OBS,TIME_OBS,OP_GRID_ID,MASK,NUM_OBS,LAI_STD_METHOD,
MTA_STD_METHOD,LAI_LANG_METHOD,MTA_LANG_METHOD,LAI_ELLIP_METHOD,
MTA_ELLIP_METHOD,LAI_CLS_METHOD,MTA_CLS_METHOD,GROUP_PLOT,COMMENTS,CRTFCN_CODE,
REVISION_DATE
'SSA-9JP-AUX02','RSS04-LAI01',04-AUG-1994,333,'F5I6P',11111,10,3.07,53,3.13,
-999,2.96,46,2.91,43,'None','Adjacent to F5I6P','CPI',25-OCT-1996
'SSA-9JP-AUX02','RSS04-LAI01',04-AUG-1994,333,'F5I6P',1111,10,3.08,45,3.04,-999,
3.0,40,2.94,37,'None','Adjacent to F5I6P','CPI',25-OCT-1996


LAI from Ceptometer:

SITE_NAME,SUB_SITE,DATE_OBS,TIME_OBS,OP_GRID_ID,LOCATION,LAI,FPAR,GROUP_PLOT,
COMMENTS,CRTFCN_CODE,REVISION_DATE
'SSA-9BS-AUX01','RSS04-LAI01',28-JUL-1994,29,'D0H6S','0A TOP',1.53,.74,'RSS-7',
'First Layer','CPI',25-OCT-1996
'SSA-9BS-AUX01','RSS04-LAI01',28-JUL-1994,31,'D0H6S','0A BASE',2.43,.87,'RSS-7',
'Second Layer','CPI',25-OCT-1996
