BOREAS TGB-04 NSA-BVP Tower Flux and Meteorological Data

7.3 Data Characteristics

7.3.1 Parameter/Variable

The parameters contained in the data files are:

         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
SENSIBLE_HEAT_FLUX_ABV_CNPY
LATENT_HEAT_FLUX_ABV_CNPY
NET_RAD_ABV_CNPY
SOIL_HEAT_FLUX
CO2_FLUX_ABV_CNPY
DOWN_PAR_ABV_CNPY
UP_PAR_ABV_CNPY
DOWN_PAR_UNDER_WATER
WIND_DIR_200CM
WIND_SPEED_100CM
AIR_TEMP_100CM
VAPOR_PRESS_ABV_CNPY
RAINFALL
DOWN_SOLAR_RAD_ABV_CNPY
UP_SOLAR_RAD_ABV_CNPY
SURF_PRESS
WATER_TABLE_HGT
WATER_OUTFLOW_WEST
WATER_OUTFLOW_EAST
CRTFCN_CODE
REVISION_DATE

7.3.2 Variable Description/Definition

The descriptions of the parameters contained in the data files 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.
SENSIBLE_HEAT_FLUX_ABV_CNPY    The sensible heat flux measured above the canopy.
LATENT_HEAT_FLUX_ABV_CNPY      The latent heat flux measured above the canopy.
NET_RAD_ABV_CNPY               The net radiation measured above the canopy.
SOIL_HEAT_FLUX                 The surface soil heat flux.
CO2_FLUX_ABV_CNPY              The carbon dioxide flux measured above the 
                               canopy.
DOWN_PAR_ABV_CNPY              The incoming photosynthetically active radiation
                               measured above the canopy.
UP_PAR_ABV_CNPY                The reflected (outgoing) photosynthetically 
                               active radiation measured above the canopy.
DOWN_PAR_UNDER_WATER           The incoming photosynthetically active radiation
                               measured under water.
WIND_DIR_200CM                 The wind direction measured at 2 meters above the
                               reference surface.
WIND_SPEED_100CM               The wind speed measured at 1 meter above the
                               reference surface.
AIR_TEMP_100CM                 The air temperature measured at 1 meter above
                               the reference surface.
VAPOR_PRESS_ABV_CNPY           The vapor pressure measured above the canopy.
RAINFALL                       The amount of rainfall measured above the canopy
                               in the 30 minute period following the given time.
DOWN_SOLAR_RAD_ABV_CNPY        The downward (incoming) solar radiation measured
                               above the canopy.
UP_SOLAR_RAD_ABV_CNPY          The reflected (outgoing) solar radiation measured
                               above the canopy.
SURF_PRESS                     The atmospheric pressure measured at the station.
WATER_TABLE_HGT                Water table height above a reference surface.
WATER_OUTFLOW_WEST             The volume of water leaving the pond from the
                               western drainage.
WATER_OUTFLOW_EAST             The volume of water leaving the pond from the
                               eastern drainage.
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 are:

         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
SENSIBLE_HEAT_FLUX_ABV_CNPY    [Watts][meter^-2]
LATENT_HEAT_FLUX_ABV_CNPY      [Watts][meter^-2]
NET_RAD_ABV_CNPY               [Watts][meter^-2]
SOIL_HEAT_FLUX                 [Watts][meter^-2]
CO2_FLUX_ABV_CNPY              [micromoles][meter^-2][second^-1]
DOWN_PAR_ABV_CNPY              [watts][meter^-2]
UP_PAR_ABV_CNPY                [watts][meter^-2]
DOWN_PAR_UNDER_WATER           [watts][meter^-2]
WIND_DIR_200CM                 [degrees from North]
WIND_SPEED_100CM               [meters][second^-1]
AIR_TEMP_100CM                 [degrees Celsius]
VAPOR_PRESS_ABV_CNPY           [kiloPascals]
RAINFALL                       [millimeters]
DOWN_SOLAR_RAD_ABV_CNPY        [Watts][meter^-2]
UP_SOLAR_RAD_ABV_CNPY          [Watts][meter^-2]
SURF_PRESS                     [kiloPascals]
WATER_TABLE_HGT                [millimeters]
WATER_OUTFLOW_WEST             [meters^3][second^-1]
WATER_OUTFLOW_EAST             [meters^3][second^-1]
CRTFCN_CODE                    [none]
REVISION_DATE                  [DD-MON-YYYY]

7.3.4 Data Source

The source of the parameter values contained in the data files 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.]
SENSIBLE_HEAT_FLUX_ABV_CNPY    [Supplied by Investigator.]
LATENT_HEAT_FLUX_ABV_CNPY      [Supplied by Investigator.]
NET_RAD_ABV_CNPY               [Net radiometer]
SOIL_HEAT_FLUX                 [Supplied by Investigator.]
CO2_FLUX_ABV_CNPY              [Infrared Gas Analyzer]
DOWN_PAR_ABV_CNPY              [quantum sensor]
UP_PAR_ABV_CNPY                [quantum sensor]
DOWN_PAR_UNDER_WATER           [quantum sensor]
WIND_DIR_200CM                 [windvane]
WIND_SPEED_100CM               [anemometer]
AIR_TEMP_100CM                 [Thermocouple]
VAPOR_PRESS_ABV_CNPY           [wet/dry thermocouples]
RAINFALL                       [tipping bucket rain gauge]
DOWN_SOLAR_RAD_ABV_CNPY        [Pyranometer]
UP_SOLAR_RAD_ABV_CNPY          [Pyranometer]
SURF_PRESS                     [barometer]
WATER_TABLE_HGT                [Potentiometer]
WATER_OUTFLOW_WEST             [Supplied by Investigator.]
WATER_OUTFLOW_EAST             [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.

                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            NSA-BVP-FLXTR  NSA-BVP-FLXTR  None    None   None    None
SUB_SITE             TGB04-FLX01    TGB04-FLX01    None    None   None    None
DATE_OBS             28-MAY-1994    17-SEP-1994    None    None   None    None
TIME_OBS             0              2330           None    None   None    None
SENSIBLE_HEAT_FLUX_  -643.31        832.66         -999    None   None    None
ABV_CNPY
LATENT_HEAT_FLUX_ABV -868.65        824.41         -999    None   None    None
_CNPY
NET_RAD_ABV_CNPY     -137.6         769            -999    None   None    None
SOIL_HEAT_FLUX       -498.83        1035.11        -999    None   None    None
CO2_FLUX_ABV_CNPY    -25            23.4224        -999    None   None    Blank
DOWN_PAR_ABV_CNPY    0              412.1          -999    None   None    None
UP_PAR_ABV_CNPY      0              26.68          -999    None   None    None
DOWN_PAR_UNDER_WATER 0              71.2           -999    None   None    None
WIND_DIR_200CM       0              359.5          -999    None   None    None
WIND_SPEED_100CM     .2             5.98           -999    None   None    None
AIR_TEMP_100CM       -2.32          28.67          -999    None   None    None
VAPOR_PRESS_ABV_CNPY .5             3.15           -999    None   None    None
RAINFALL             0              129.84         -999    None   None    Blank
DOWN_SOLAR_RAD_ABV_  0              959            -999    None   None    None
CNPY
UP_SOLAR_RAD_ABV_    0              107.5          -999    None   None    None
CNPY
SURF_PRESS           97.7           101.7          -999    None   None    None
WATER_TABLE_HGT      -2.495         1.362          -999    None   None    Blank
WATER_OUTFLOW_WEST   0              2932.243       -999    None   None    Blank
WATER_OUTFLOW_EAST   0              .03            -999    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        17-MAR-1999    17-MAR-1999    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,SENSIBLE_HEAT_FLUX_ABV_CNPY,
LATENT_HEAT_FLUX_ABV_CNPY,NET_RAD_ABV_CNPY,SOIL_HEAT_FLUX,CO2_FLUX_ABV_CNPY,
DOWN_PAR_ABV_CNPY,UP_PAR_ABV_CNPY,DOWN_PAR_UNDER_WATER,WIND_DIR_200CM,
WIND_SPEED_100CM,AIR_TEMP_100CM,VAPOR_PRESS_ABV_CNPY,RAINFALL,
DOWN_SOLAR_RAD_ABV_CNPY,UP_SOLAR_RAD_ABV_CNPY,SURF_PRESS,WATER_TABLE_HGT,
WATER_OUTFLOW_WEST,WATER_OUTFLOW_EAST,CRTFCN_CODE,REVISION_DATE
'NSA-BVP-FLXTR','TGB04-FLX01',28-MAY-1994,2200,-6.73,102.54,269.3,173.49,
1.8638,170.1,13.31,23.02,134.3,3.32,24.28,.88,-999.0,359.3,33.13,98.9,1.281,
-999.0,-999.0,'CPI',17-MAR-1999
'NSA-BVP-FLXTR','TGB04-FLX01',28-MAY-1994,2230,-11.54,177.5,257.2,91.24,
3.1192,162.8,12.81,22.13,152.5,3.7,24.7,.87,-999.0,347.6,31.97,98.9,1.281,
-999.0,-999.0,'CPI',17-MAR-1999
