BOREAS TGB-05 CO2, CH4, and CO Chamber Flux Data over the NSA

7.3 Data Characteristics

7.3.1 Parameter/Variable

         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
STATION_ID
CO2_FLUX
CH4_FLUX
CO_FLUX
AIR_TEMP
SOIL_TEMP_1CM
SOIL_TEMP_10CM
DOWN_SHORTWAVE_RAD
REVISION_DATE
CRTFCN_CODE



7.3.2 Variable Description/Definition

         Column Name                             Description
------------------------------ ------------------------------------------------
SITE_NAME                      The identifier assigned to the site by BOREAS
                               Information System (BORIS) staff, in the format
                               SSS-TTT-CCCCC, where SSS identifies the portion
                               of the study area: NSA, SSA, REG, or TRN; TTT
                               identifies the cover type for the site (999 if
                               unknown); and CCCCC is the identifier for the
                               site (exactly what it means will vary with site
                               type).
SUB_SITE                       The identifier assigned to the subsite by BORIS,
                               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 the subsite (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.
STATION_ID                     The station identifier from which the measurement
                               came.
CO2_FLUX                       Carbon dioxide flux.
CH4_FLUX                       Methane flux.
CO_FLUX                        Carbon monoxide flux.
AIR_TEMP                       The measured air temperature.
SOIL_TEMP_1CM                  Soil temperature at 1 cm depth.
SOIL_TEMP_10CM                 Soil temperature at 10 cm depth.
DOWN_SHORTWAVE_RAD             The total downward shortwave (solar) radiation.
REVISION_DATE                  The most recent date that the information in the
                               referenced data base table record was revised.
CRTFCN_CODE                    The BOREAS certification level of the data.  
                               Examples are Checked by PI (CPI), Certified 
                               by Group (CGR), Preliminary (PRE), and CPI 
                               but questionable (CPI-???).


7.3.3 Unit of Measurement

         Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
STATION_ID                     [none]
CO2_FLUX                       [micromoles][meter-2][second-1]
CH4_FLUX                       [micromoles][meter-2][second-1]
CO_FLUX                        [micromoles][meter-2][second-1]
AIR_TEMP                       [degrees Celsius]
SOIL_TEMP_1CM                  [degrees Celsius]
SOIL_TEMP_10CM                 [degrees Celsius]
DOWN_SHORTWAVE_RAD             [Watts][meter-2]
REVISION_DATE                  [DD-MON-YYYY]
CRTFCN_CODE                    [none]



7.3.4 Data Source

         Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      Assigned by BORIS
SUB_SITE                       Assigned by BORIS
DATE_OBS                       Investigator
TIME_OBS                       Investigator
STATION_ID                     Investigator
CO2_FLUX                       RGA-3 Chromatograph
CH4_FLUX                       RGA-3 Chromatograph
CO_FLUX                        RGA-3 Chromatograph
AIR_TEMP                       Thermometer
SOIL_TEMP_1CM                  Temperature probe
SOIL_TEMP_10CM                 Temperature probe
DOWN_SHORTWAVE_RAD             IL-1700 Radiometer
REVISION_DATE                  Assigned by BORIS
CRTFCN_CODE                    Assigned by BORIS



7.3.5  Data Range

                     Minimum        Maximum        Missng  Unrel  Below   Data
                     Data           Data           Data    Data   Detect  Not
Column Name          Value          Value          Value   Value  Limit   Cllctd
--------------------------------------------------------------------------------
SITE_NAME            NSA-9BS-T05GR  NSA-9JP-T5391  None    None   None    None
SUB_SITE             TGB05-F87GR    TGB05-FXCJP    None    None   None    None
DATE_OBS             08-MAR-1994    17-OCT-1996    None    None   None    None
TIME_OBS             0              2300           None    None   None    None
STATION_ID           1              6              None    None   None    None
CO2_FLUX             0.0281        4.47            -999    -888   None    Blank
CH4_FLUX             -11.5625      0.00083         -999    -888   None    Blank
CO_FLUX              -0.0262        0.057          None    -888   None    Blank
AIR_TEMP             -0.6            91            -999    None   None    Blank
SOIL_TEMP_1CM        -0.2            58.2          -999    None   None    Blank
SOIL_TEMP_10CM       -0.3            20            -999    None   None    Blank
DOWN_SHORTWAVE_RAD   21             967            -999    None   None    Blank
REVISION_DATE        26-SEP-1997    26-SEP-1997    None    None   None    None
CRTFCN_CODE          CPI            CPI            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 that an attempt was made to determine the
                      parameter value, but the analysis personnel deemed the
                      value to be unreliable.
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 staff 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,STATION_ID,CO2_FLUX,CH4_FLUX,CO_FLUX,
AIR_TEMP,SOIL_TEMP_1CM,SOIL_TEMP_10CM,DOWN_SHORTWAVE_RAD,REVISION_DATE,
CRTFCN_CODE
'NSA-9BS-T05GR','TGB05-F87GR',04-JUN-1996,1600,'18734',2.22,-.000049,,,,2.5,,
26-SEP-1997,'CPI'
'NSA-9BS-T05GR','TGB05-F87GR',04-JUN-1996,1600,'18743',2,-.00016,,,,3,,
26-SEP-1997,'CPI'
