BOREAS TF-03 Tower Flux & Meteorological 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
SENSIBLE_HEAT_FLUX_ABV_CNPY
LATENT_HEAT_FLUX_ABV_CNPY
NET_RAD_ABV_CNPY
CO2_FLUX_ABV_CNPY
CO2_CONC_ABV_CNPY
CO2_STORAGE
DOWN_PPFD_ABV_CNPY
DOWN_PPFD_BELOW_CNPY
WIND_DIR_MAG_ABV_CNPY
WIND_SPEED_ABV_CNPY
FRICTION_VELOC_ABV_CNPY
AIR_TEMP_ABV_CNPY
AIR_TEMP_10M
AIR_TEMP_2M
SOIL_TEMP_5CM_1
SOIL_TEMP_10CM_1
SOIL_TEMP_20CM_1
SOIL_TEMP_50CM_1
SOIL_TEMP_100CM_1
SOIL_TEMP_5CM_2
SOIL_TEMP_10CM_2
SOIL_TEMP_20CM_2
SOIL_TEMP_50CM_2
SOIL_TEMP_100CM_2
VAPOR_PRESS_ABV_CNPY
RAIN_RATE
MONIN_OBUKHOV_LENGTH
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) of the start of the 
                               data collection.
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.
CO2_FLUX_ABV_CNPY              The carbon dioxide flux measured above the canopy
CO2_CONC_ABV_CNPY              The carbon dioxide concentration measured above
                               the canopy.
CO2_STORAGE                    The storage term of carbon dioxide under the eddy
                               flux system.
DOWN_PPFD_ABV_CNPY             The incoming photosynthetic photon flux density
                               measured above the canopy.
DOWN_PPFD_BELOW_CNPY           The downward photosynthetic photon flux density
                               measured under the canopy.
WIND_DIR_MAG_ABV_CNPY          The wind direction measured above the canopy from
                               magnetic north.
WIND_SPEED_ABV_CNPY            The wind speed measured above the canopy.
FRICTION_VELOC_ABV_CNPY        The friction velocity above the canopy.
AIR_TEMP_ABV_CNPY              The air temperature measured above the canopy.
AIR_TEMP_10M                   The air temperature measured at 10 meters above
                               the ground.
AIR_TEMP_2M                    The air temperature at 2 meters above the ground
SOIL_TEMP_5CM_1                The soil temperature recorded at 5 cm in depth at
                               plot 1.
SOIL_TEMP_10CM_1               The soil temperature recorded at 10 cm in depth
                               at plot 1.
SOIL_TEMP_20CM_1               The soil temperature recorded at 20 cm in depth
                               at plot 1.
SOIL_TEMP_50CM_1               The soil temperature recorded at 50 cm in depth
                               at plot 1.
SOIL_TEMP_100CM_1              The soil temperature recorded at 1 m in depth at
                               plot 1.
SOIL_TEMP_5CM_2                The soil temperature recorded at 5 cm in depth at
                               plot 2.
SOIL_TEMP_10CM_2               The soil temperature recorded at 10 cm in depth
                               at plot 2.
SOIL_TEMP_20CM_2               The soil temperature recorded at 20 cm in depth
                               at plot 2.
SOIL_TEMP_50CM_2               The soil temperature recorded at 50 cm in depth
                               at plot 2.
SOIL_TEMP_100CM_2              The soil temperature recorded at 1 m in depth at
                               plot 2.
VAPOR_PRESS_ABV_CNPY           The vapor pressure measured above the canopy.
RAIN_RATE                      The rainfall rate measured in a clearing.
MONIN_OBUKHOV_LENGTH           The Monin-Obukhov length.
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]
SENSIBLE_HEAT_FLUX_ABV_CNPY    [Watts][meter^-2]
LATENT_HEAT_FLUX_ABV_CNPY      [Watts][meter^-2]
NET_RAD_ABV_CNPY               [Watts][meter^-2]
CO2_FLUX_ABV_CNPY              [micromoles][meter^-2][second^-1]
CO2_CONC_ABV_CNPY              [parts per million]
CO2_STORAGE                    [micromoles][meter^-2][second^-1]
DOWN_PPFD_ABV_CNPY             [micromoles][meter^-2][second^-1]
DOWN_PPFD_BELOW_CNPY           [micromoles][meter^-2][second^-1]
WIND_DIR_MAG_ABV_CNPY          [degrees from magnetic North]
WIND_SPEED_ABV_CNPY            [meters][second^-1]
FRICTION_VELOC_ABV_CNPY        [meters][second^-1]
AIR_TEMP_ABV_CNPY              [degrees Celsius]
AIR_TEMP_10M                   [degrees Celsius]
AIR_TEMP_2M                    [degrees Celsius]
SOIL_TEMP_5CM_1                [degrees Celsius]
SOIL_TEMP_10CM_1               [degrees Celsius]
SOIL_TEMP_20CM_1               [degrees Celsius]
SOIL_TEMP_50CM_1               [degrees Celsius]
SOIL_TEMP_100CM_1              [degrees Celsius]
SOIL_TEMP_5CM_2                [degrees Celsius]
SOIL_TEMP_10CM_2               [degrees Celsius]
SOIL_TEMP_20CM_2               [degrees Celsius]
SOIL_TEMP_50CM_2               [degrees Celsius]
SOIL_TEMP_100CM_2              [degrees Celsius]
VAPOR_PRESS_ABV_CNPY           [kiloPascals]
RAIN_RATE                      [millimeters][hour^-1]
MONIN_OBUKHOV_LENGTH           [meters]
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                       [Investigator]
TIME_OBS                       [Investigator]
SENSIBLE_HEAT_FLUX_ABV_CNPY    [ATI sonic anemometer]
LATENT_HEAT_FLUX_ABV_CNPY      [Infrared Gas Analyzer]
NET_RAD_ABV_CNPY               [Net radiometer]
CO2_FLUX_ABV_CNPY              [Infrared Gas Analyzer]
CO2_CONC_ABV_CNPY              [Infrared Gas Analyzer]
CO2_STORAGE                    [Infrared Gas Analyzer]
DOWN_PPFD_ABV_CNPY             [Quantum sensor]
DOWN_PPFD_BELOW_CNPY           [Quantum sensor]
WIND_DIR_MAG_ABV_CNPY          [Met One sensor]
WIND_SPEED_ABV_CNPY            [Met One spinning cup]
FRICTION_VELOC_ABV_CNPY        [ATI sonic anemometer]
AIR_TEMP_ABV_CNPY              [thermocouple]
AIR_TEMP_10M                   [thermocouple]
AIR_TEMP_2M                    [thermocouple]
SOIL_TEMP_5CM_1                [thermocouple]
SOIL_TEMP_10CM_1               [thermocouple]
SOIL_TEMP_20CM_1               [thermocouple]
SOIL_TEMP_50CM_1               [thermocouple]
SOIL_TEMP_100CM_1              [thermocouple]
SOIL_TEMP_5CM_2                [thermocouple]
SOIL_TEMP_10CM_2               [thermocouple]
SOIL_TEMP_20CM_2               [thermocouple]
SOIL_TEMP_50CM_2               [thermocouple]
SOIL_TEMP_100CM_2              [thermocouple]
VAPOR_PRESS_ABV_CNPY           [thermocouple]
RAIN_RATE                      [Infrared Gas Analyzer]
MONIN_OBUKHOV_LENGTH           [ATI sonic anemometer]
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-OBS-FLXTR  NSA-OBS-FLXTR  None    None   None    None
SUB_SITE             9TF03-FLX01    9TF03-FLX01    None    None   None    None
DATE_OBS             16-MAR-1994    31-OCT-1996    None    None   None    None
TIME_OBS             0              2330           None    None   None    None
SENSIBLE_HEAT_FLUX_  -192.857       661.963        -999    None   None    None
ABV_CNPY
LATENT_HEAT_FLUX_ABV_-182.232       514.406        -999    None   None    None
CNPY
NET_RAD_ABV_CNPY     -77.88         831.6          -999    None   None    None
CO2_FLUX_ABV_CNPY    -17.964        52.586         -999    None   None    None
CO2_CONC_ABV_CNPY    333.035        448.098        -999    None   None    None
CO2_STORAGE          -20.49         12.09          -999    None   None    None
DOWN_PPFD_ABV_CNPY   -41.878        2129.89        -999    None   None    None
DOWN_PPFD_BELOW_CNPY -23.073        379.72         -999    None   None    None
WIND_DIR_MAG_ABV_    0              360            -999    None   None    None
CNPY
WIND_SPEED_ABV_CNPY  .06            12.24          -999    None   None    None
FRICTION_VELOC_ABV_  .01            1.928          -999    None   None    None
CNPY
AIR_TEMP_ABV_CNPY    -44.299        36.216         -999    None   None    None
AIR_TEMP_10M         -44.81         37.268         -999    None   None    None
AIR_TEMP_2M          -45.071        37.31          -999    None   None    None
SOIL_TEMP_5CM_1      -10.382        33.19          -999    None   None    None
SOIL_TEMP_10CM_1     -4.971         19.37          -999    None   None    None
SOIL_TEMP_20CM_1     -1.686         12.582         -999    None   None    None
SOIL_TEMP_50CM_1     -1.003         6.065          -999    None   None    None
SOIL_TEMP_100CM_1    -.196          3.932          -999    None   None    None
SOIL_TEMP_5CM_2      -22.327        34.565         -999    None   None    None
SOIL_TEMP_10CM_2     -24.914        30.136         -999    None   None    None
SOIL_TEMP_20CM_2     -13.726        20.396         -999    None   None    None
SOIL_TEMP_50CM_2     -4.872         10.316         -999    None   None    None
SOIL_TEMP_100CM_2    -.958          2.112          -999    None   None    None
VAPOR_PRESS_ABV_CNPY .0423          2.8647         -999    None   None    None
RAIN_RATE            0              6.6            -999    None   None    None
MONIN_OBUKHOV_LENGTH -2305260       2048890        -999    None   None    None
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        05-FEB-1998    05-FEB-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,SENSIBLE_HEAT_FLUX_ABV_CNPY,
LATENT_HEAT_FLUX_ABV_CNPY,NET_RAD_ABV_CNPY,CO2_FLUX_ABV_CNPY,CO2_CONC_ABV_CNPY,
CO2_STORAGE,DOWN_PPFD_ABV_CNPY,DOWN_PPFD_BELOW_CNPY,WIND_DIR_MAG_ABV_CNPY,
WIND_SPEED_ABV_CNPY,FRICTION_VELOC_ABV_CNPY,AIR_TEMP_ABV_CNPY,AIR_TEMP_10M,
AIR_TEMP_2M,SOIL_TEMP_5CM_1,SOIL_TEMP_10CM_1,SOIL_TEMP_20CM_1,SOIL_TEMP_50CM_1,
SOIL_TEMP_100CM_1,SOIL_TEMP_5CM_2,SOIL_TEMP_10CM_2,SOIL_TEMP_20CM_2,
SOIL_TEMP_50CM_2,SOIL_TEMP_100CM_2,VAPOR_PRESS_ABV_CNPY,RAIN_RATE,
MONIN_OBUKHOV_LENGTH,CRTFCN_CODE,REVISION_DATE
'NSA-OBS-FLXTR','9TF03-FLX01',16-MAR-1994,30,-999.0,-999.0,-999.0,-999.0,-999.0,
-999.0,-999.0,-999.0,-999,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,
-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,
'CPI',05-FEB-1998
'NSA-OBS-FLXTR','9TF03-FLX01',16-MAR-1994,100,-999.0,-999.0,-999.0,-999.0,
-999.0,-999.0,-999.0,-999.0,-999,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,
-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,-999.0,
-999.0,'CPI',05-FEB-1998
