BOREAS TF-04 SSA-YJP Tower Flux, Meteorological, and Canopy Condition 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
CAM_SENS_HEAT_FLUX_ABV_CNPY
LATENT_HEAT_FLUX_ABV_CNPY
CAM_LATENT_HEAT_FLUX_ABV_CNPY
NET_RAD_ABV_CNPY
CO2_FLUX_ABV_CNPY
LIC_CO2_FLUX_ABV_CNPY
CO2_FLUX_PROFILE
CO2_CONC_ABV_CNPY
WIND_SPEED_ABV_CNPY
WIND_SPEED_ABV_CNPY_2
MAGN_WINDSPEED_VECTOR_ABV_CNPY
WIND_DIR_ABV_CNPY
MEAN_WIND_DIR_ABV_CNPY
SDEV_WIND_DIR_ABV_CNPY
WIND_SPEED_110CM
FRICTION_VEL_ABV_CNPY
STABILITY_INDEX_ABV_CNPY
DOWN_PAR_ABV_CNPY
DOWN_PPFD_ABV_CNPY
AIR_TEMP_ABV_CNPY
AIR_TEMP_ABV_CNPY_2
AIR_TEMP_110CM
DOWN_SOLAR_RAD_ABV_CNPY
DOWN_SOLAR_RAD_ABV_CNPY_2
VAPOR_PRESS_ABV_CNPY
VAPOR_PRESS_ABV_CNPY_2
VAPOR_PRESS_110CM
VAPOR_PRESS_DEFICIT_ABV_CNPY
VAPOR_PRESS_DEFICIT_110CM
SURF_PRESS
SENSIBLE_HEAT_FLUX_BELOW_CNPY
LATENT_HEAT_FLUX_BELOW_CNPY
MEAN_BOLE_TEMP_1
MEAN_BOLE_TEMP_2
CNPY_AIR_TEMP_120CM
CNPY_VAPOR_PRESS_120CM
CNPY_SURF_PRESS_170CM
LEAF_WET_160CM
LEAF_WET_140CM
RAINFALL
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
CAM_SENS_HEAT_FLUX_ABV_CNPY    The sensible heat flux measured above the canopy
                               using the Campbell Scientific sensor.
LATENT_HEAT_FLUX_ABV_CNPY      The latent heat flux measured above the canopy.
CAM_LATENT_HEAT_FLUX_ABV_CNPY  The latent heat flux measured above the canopy 
                               using the Campbell Scientific sensor.
NET_RAD_ABV_CNPY               The net radiation measured above the canopy.
CO2_FLUX_ABV_CNPY              The carbon dioxide flux measured above the canopy
LIC_CO2_FLUX_ABV_CNPY          The carbon dioxide flux measured above the canopy
                               using the LiCor instrument.
CO2_FLUX_PROFILE               The CO2 flux profile.
CO2_CONC_ABV_CNPY              The carbon dioxide concentration measured above
                               the canopy.
WIND_SPEED_ABV_CNPY            The wind speed measured above the canopy.
WIND_SPEED_ABV_CNPY_2          The mean wind speed measured above the canopy 
                               over a 30 minute period.
MAGN_WINDSPEED_VECTOR_ABV_CNPY The magnitude of the wind speed vector measured 
                               above the canopy.
WIND_DIR_ABV_CNPY              The direction from which the wind is blowing (in
                               creasing in a clockwise direction from the North)
                               and measured above the canopy.
MEAN_WIND_DIR_ABV_CNPY         The mean wind direction measured above the canopy
                               over a 30 minute period.
SDEV_WIND_DIR_ABV_CNPY         The standard deviation of the wind direction 
                               measured above the canopy over a 30 minute
                               period.
WIND_SPEED_110CM               The wind speed measured at 1.1 meters above 
                               ground level.
FRICTION_VEL_ABV_CNPY          The friction velocity above the canopy.
STABILITY_INDEX_ABV_CNPY       The z/L stability index measured above the canopy
DOWN_PAR_ABV_CNPY              The incoming photosynthetically active radiation
                               measured above the canopy.
DOWN_PPFD_ABV_CNPY             The downward (incoming) photosynthetic photon
                               flux density measured above the canopy.
AIR_TEMP_ABV_CNPY              The air temperature measured above the canopy.
AIR_TEMP_ABV_CNPY_2            The mean air temperature measured above the 
                               canopy over a 30 minute period.
AIR_TEMP_110CM                 The air temperature measured at 1.1 meters above
                               ground level.
DOWN_SOLAR_RAD_ABV_CNPY        The downward (incoming) solar radiation measured
                               above the canopy.
DOWN_SOLAR_RAD_ABV_CNPY_2      The downward (incoming) solar radiation measured
                               above the canopy.
VAPOR_PRESS_ABV_CNPY           The vapor pressure measured above the canopy.
VAPOR_PRESS_ABV_CNPY_2         The mean vapor pressure measured above the canopy
                               over a 30 minute period.
VAPOR_PRESS_110CM              The vapor pressure measured at 1.1 meters above
                               ground level.
VAPOR_PRESS_DEFICIT_ABV_CNPY   The vapor pressure deficit measured above the 
                               canopy.
VAPOR_PRESS_DEFICIT_110CM      The vapor pressure deficit measured at 1.1 meters
                               above ground level.
SURF_PRESS                     The atmospheric pressure measured at the station
SENSIBLE_HEAT_FLUX_BELOW_CNPY  The sensible heat flux measured below the canopy
LATENT_HEAT_FLUX_BELOW_CNPY    The latent heat flux measured below the canopy.
MEAN_BOLE_TEMP_1               The average bole temperature for tree 1.
MEAN_BOLE_TEMP_2               The average bole temperature for tree 2.
CNPY_AIR_TEMP_120CM            The air temperature measured within the canopy 
                               at a height of 1.2 meters.
CNPY_VAPOR_PRESS_120CM         The vapor pressure measured within the canopy at
                               a height of 1.2 meters.
CNPY_SURF_PRESS_170CM          The atmospheric pressure measured within the 
                               canopy at a height of 1.7 meters above ground 
                               level.
LEAF_WET_160CM                 The leaf wetness measured by an artificial leaf
                               electrical resistance sensor.  The sensor was 
                               placed in an opening in the trees at a height of
                               1.6 meters.
LEAF_WET_140CM                 The leaf wetness measured by an artificial leaf
                               electrical resistance sensor.  The sensor was 
                               placed 10 cm from a tree trunk at a height of 
                               1.4 meters.
RAINFALL                       The amount of rainfall measured above the canopy
                               in the 30 minute period following the given time
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]
CAM_SENS_HEAT_FLUX_ABV_CNPY    [Watts][meter^-2]
LATENT_HEAT_FLUX_ABV_CNPY      [Watts][meter^-2]
CAM_LATENT_HEAT_FLUX_ABV_CNPY  [Watts][meter^-2]
NET_RAD_ABV_CNPY               [Watts][meter^-2]
CO2_FLUX_ABV_CNPY              [micromoles][meter^-2][second^-1]
LIC_CO2_FLUX_ABV_CNPY          [micromoles][meter^-2][second^-1]
CO2_FLUX_PROFILE               [micromoles][meter^-2][second]
CO2_CONC_ABV_CNPY              [parts per million]
WIND_SPEED_ABV_CNPY            [meters][second^-1]
WIND_SPEED_ABV_CNPY_2          [meters][second^-1]
MAGN_WINDSPEED_VECTOR_ABV_CNPY [meters][second^-1]
WIND_DIR_ABV_CNPY              [degrees]
MEAN_WIND_DIR_ABV_CNPY         [degrees from north]
SDEV_WIND_DIR_ABV_CNPY         [degrees from north]
WIND_SPEED_110CM               [meters][second^-1]
FRICTION_VEL_ABV_CNPY          [meters][seconds^-1]
STABILITY_INDEX_ABV_CNPY       [unitless]
DOWN_PAR_ABV_CNPY              [watts][meter^-2]
DOWN_PPFD_ABV_CNPY             [micromoles][meter^-2][second^-1]
AIR_TEMP_ABV_CNPY              [degrees Celsius]
AIR_TEMP_ABV_CNPY_2            [degrees Celsius]
AIR_TEMP_110CM                 [degrees Celsius]
DOWN_SOLAR_RAD_ABV_CNPY        [Watts][meter^-2]
DOWN_SOLAR_RAD_ABV_CNPY_2      [Watts][meter^-2]
VAPOR_PRESS_ABV_CNPY           [kiloPascals]
VAPOR_PRESS_ABV_CNPY_2         [kiloPascals]
VAPOR_PRESS_110CM              [kiloPascals]
VAPOR_PRESS_DEFICIT_ABV_CNPY   [kiloPascals]
VAPOR_PRESS_DEFICIT_110CM      [kiloPascals]
SURF_PRESS                     [kiloPascals]
SENSIBLE_HEAT_FLUX_BELOW_CNPY  [Watts][meter^-2]
LATENT_HEAT_FLUX_BELOW_CNPY    [Watts][meter^-2]
MEAN_BOLE_TEMP_1               [degrees Celsius]
MEAN_BOLE_TEMP_2               [degrees Celsius]
CNPY_AIR_TEMP_120CM            [degrees Celsius]
CNPY_VAPOR_PRESS_120CM         [kiloPascals]
CNPY_SURF_PRESS_170CM          [kiloPascals]
LEAF_WET_160CM                 [kilo ohms]
LEAF_WET_140CM                 [kilo ohms]
RAINFALL                       [millimeters]
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    [ATI sonic anemometer]
CAM_SENS_HEAT_FLUX_ABV_CNPY    [Campbell sonic anemometer]
LATENT_HEAT_FLUX_ABV_CNPY      [ATI sonic anemometer]
CAM_LATENT_HEAT_FLUX_ABV_CNPY  [Campbell sonic anemometer]
NET_RAD_ABV_CNPY               [net radiometer]
CO2_FLUX_ABV_CNPY              [ATD CO2 sensor]
LIC_CO2_FLUX_ABV_CNPY          [LiCor CO2 sensor]
CO2_FLUX_PROFILE               [CO2 sensor]
CO2_CONC_ABV_CNPY              [CO2 sensor]
WIND_SPEED_ABV_CNPY            [anemometer]
WIND_SPEED_ABV_CNPY_2          [anemometer]
MAGN_WINDSPEED_VECTOR_ABV_CNPY [anemometer]
WIND_DIR_ABV_CNPY              [windvane]
MEAN_WIND_DIR_ABV_CNPY         [windvane]
SDEV_WIND_DIR_ABV_CNPY         [windvane]
WIND_SPEED_110CM               [anemometer]
FRICTION_VEL_ABV_CNPY          [sonic anemometer]
STABILITY_INDEX_ABV_CNPY       [Supplied by Investigator.]
DOWN_PAR_ABV_CNPY              [quantum sensor]
DOWN_PPFD_ABV_CNPY             [quantum sensor]
AIR_TEMP_ABV_CNPY              [psychrometer]
AIR_TEMP_ABV_CNPY_2            [psychrometer]
AIR_TEMP_110CM                 [psychrometer]
DOWN_SOLAR_RAD_ABV_CNPY        [solarimeter]
DOWN_SOLAR_RAD_ABV_CNPY_2      [solarimeter]
VAPOR_PRESS_ABV_CNPY           [psychrometer]
VAPOR_PRESS_ABV_CNPY_2         [psychrometer]
VAPOR_PRESS_110CM              [psychrometer]
VAPOR_PRESS_DEFICIT_ABV_CNPY   [psychrometer]
VAPOR_PRESS_DEFICIT_110CM      [psychrometer]
SURF_PRESS                     [barometer]
SENSIBLE_HEAT_FLUX_BELOW_CNPY  [ATI sonic anemometer]
LATENT_HEAT_FLUX_BELOW_CNPY    [ATI sonic anemometer]
MEAN_BOLE_TEMP_1               [thermocouple]
MEAN_BOLE_TEMP_2               [thermocouple]
CNPY_AIR_TEMP_120CM            [psychrometer]
CNPY_VAPOR_PRESS_120CM         [psychrometer]
CNPY_SURF_PRESS_170CM          [barometer]
LEAF_WET_160CM                 [wetness sensor]
LEAF_WET_140CM                 [wetness sensor]
RAINFALL                       [tipping bucket rain gauge]
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            SSA-YJP-FLXTR  SSA-YJP-FLXTR  None    None   None    None
SUB_SITE             9TF04-FLX01    9TF04-FLX01    None    None   None    None
DATE_OBS             02-SEP-1993    20-SEP-1994    None    None   None    None
TIME_OBS             0              2330           None    None   None    None
SENSIBLE_HEAT_FLUX_  -83.1          9999           None    None   None    Blank
ABV_CNPY
CAM_SENS_HEAT_FLUX_  -97.3          512.2          -999    None   None    Blank
ABV_CNPY
LATENT_HEAT_FLUX_ABV -19.9          481.3          -999    None   None    Blank
_CNPY
CAM_LATENT_HEAT_FLUX -116.5         454.1          -999    None   None    Blank
_ABV_CNPY
NET_RAD_ABV_CNPY     -78            689            -999    None   None    Blank
CO2_FLUX_ABV_CNPY    -5.88          10.88          -999    None   None    Blank
LIC_CO2_FLUX_ABV_    -15.2          14.67          -999    None   None    Blank
CNPY
CO2_FLUX_PROFILE     -18.1          19.59          -999    None   None    Blank
CO2_CONC_ABV_CNPY    290            447.5          -999    None   None    Blank
WIND_SPEED_ABV_CNPY  0              8.13           -999    None   None    Blank
WIND_SPEED_ABV_CNPY_ .2             8.13           None    None   None    Blank
2
MAGN_WINDSPEED_      .01            7.69           None    None   None    Blank
VECTOR_ABV_CNPY
WIND_DIR_ABV_CNPY    0              360            None    None   None    Blank
MEAN_WIND_DIR_ABV_   0              359.9          None    None   None    Blank
CNPY
SDEV_WIND_DIR_ABV_   0              79.9           None    None   None    Blank
CNPY
WIND_SPEED_110CM     0              1.89           -999    None   None    Blank
FRICTION_VEL_ABV_    0              6.11           -999    None   None    Blank
CNPY
STABILITY_INDEX_ABV_ -13.5          60.52          -999    None   None    Blank
CNPY
DOWN_PAR_ABV_CNPY    -1             1850           None    None   None    Blank
DOWN_PPFD_ABV_CNPY   -.6            1917           None    None   None    Blank
AIR_TEMP_ABV_CNPY    -.56           29.82          None    None   None    Blank
AIR_TEMP_ABV_CNPY_2  -.56           29.82          None    None   None    Blank
AIR_TEMP_110CM       -4.04          32.65          -999    None   None    Blank
DOWN_SOLAR_RAD_ABV_  -1             939            -999    None   None    Blank
CNPY
DOWN_SOLAR_RAD_ABV_  -1             982            None    None   None    Blank
CNPY_2
VAPOR_PRESS_ABV_CNPY .493           2.201          None    None   None    Blank
VAPOR_PRESS_ABV_CNPY .48            2.19           None    None   None    Blank
_2
VAPOR_PRESS_110CM    .46            2.522          -999    None   None    Blank
VAPOR_PRESS_DEFICIT_ 0              3.129          -999    None   None    Blank
ABV_CNPY
VAPOR_PRESS_DEFICIT_ -.099          3.798          -999    None   None    Blank
110CM
SURF_PRESS           93.2           999            None    None   None    Blank
SENSIBLE_HEAT_FLUX_  -32.3          453.3          -999    None   None    Blank
BELOW_CNPY
LATENT_HEAT_FLUX_    -85.7          330            -999    None   None    Blank
BELOW_CNPY
MEAN_BOLE_TEMP_1     -1.78          35.02          None    None   None    Blank
MEAN_BOLE_TEMP_2     -2.93          36.18          None    None   None    Blank
CNPY_AIR_TEMP_120CM  -4.04          32.65          None    None   None    Blank
CNPY_VAPOR_PRESS_    .443           2.519          None    None   None    Blank
120CM
CNPY_SURF_PRESS_     93.2           96.912         None    None   None    Blank
170CM
LEAF_WET_160CM       2.6            6812           -999    None   None    Blank
LEAF_WET_140CM       2              6859           -999    None   None    Blank
RAINFALL             0              12.75          None    None   None    Blank
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        27-APR-1999    27-APR-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,CAM_SENS_HEAT_FLUX_ABV_C
NPY,LATENT_HEAT_FLUX_ABV_CNPY,CAM_LATENT_HEAT_FLUX_ABV_CNPY,NET_RAD_ABV_CNPY,CO2_FLUX_ABV
_CNPY,LIC_CO2_FLUX_ABV_CNPY,CO2_FLUX_PROFILE,CO2_CONC_ABV_CNPY,WIND_SPEED_ABV_CNPY,WIND_S
PEED_ABV_CNPY_2,MAGN_WINDSPEED_VECTOR_ABV_CNPY,WIND_DIR_ABV_CNPY,MEAN_WIND_DIR_ABV_CNPY,S
DEV_WIND_DIR_ABV_CNPY,WIND_SPEED_110CM,FRICTION_VEL_ABV_CNPY,STABILITY_INDEX_ABV_CNPY,DOW
N_PAR_ABV_CNPY,DOWN_PPFD_ABV_CNPY,AIR_TEMP_ABV_CNPY,AIR_TEMP_ABV_CNPY_2,AIR_TEMP_110CM,DO
WN_SOLAR_RAD_ABV_CNPY,DOWN_SOLAR_RAD_ABV_CNPY_2,VAPOR_PRESS_ABV_CNPY,VAPOR_PRESS_ABV_CNPY
_2,VAPOR_PRESS_110CM,VAPOR_PRESS_DEFICIT_ABV_CNPY,VAPOR_PRESS_DEFICIT_110CM,SURF_PRESS,SE
NSIBLE_HEAT_FLUX_BELOW_CNPY,LATENT_HEAT_FLUX_BELOW_CNPY,MEAN_BOLE_TEMP_1,MEAN_BOLE_TEMP_2
,CNPY_AIR_TEMP_120CM,CNPY_VAPOR_PRESS_120CM,CNPY_SURF_PRESS_170CM,LEAF_WET_160CM,LEAF_WET
_140CM,RAINFALL,CRTFCN_CODE,REVISION_DATE
'SSA-YJP-FLXTR','9TF04-FLX01',2-Sep-93,130,,,,,,,,,,,1.03,1.01,,12.9,8.9,,,,,11.6,,8.86,,
,6.6,,1.06,,,,,,,,,,,,,,1.75,'CPI',08-Nov-03
