BOREAS TGB-01 CH4 & CO2 Chamber Flux Data: NSA

7.3 Data Characteristics

7.3.1 Parameter/Variable

         Column Name
------------------------------
SITE_NAME
SUB_SITE
DATE_OBS
TIME_OBS
CO2_FLUX
CH4_FLUX
COVER_TYPE
SOIL_TEMP_1CM
SOIL_TEMP_5CM
SOIL_TEMP_10CM
SOIL_TEMP_20CM
COLLAR_ID
CO2_CONC
CO2_CONC_2
CH4_CONC
CH4_CONC_2
CRTFCN_CODE
REVISION_DATE

7.3.2 Variable Description/Definition   

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, or
                               TRN; 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 subsite by 
                               BOREAS, in the format GGGGG-IIIII, where GGGGG is 
                               the group associated with the subsite 
                               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.

CO2_FLUX                       Carbon dioxide flux.
CH4_FLUX                       Methane flux.
COVER_TYPE                     The dominant species, vegetation, or type of land
                               cover that exists at the location.

SOIL_TEMP_1CM                  Soil temperature at 1-cm depth.
SOIL_TEMP_5CM                  Soil temperature at 5-cm depth.
SOIL_TEMP_10CM                 Soil temperature at 10-cm depth.
SOIL_TEMP_20CM                 Soil temperature at 20-cm depth.
COLLAR_ID                      A TGB-01 designation for the chamber collar
                               sites, in the form of A-BBB-##, where A = C or M 
                               (Crill or Moosavi), BBB denotes the site and
                               possibly microtopographic designation, and ## is
                               a sequention collar number.

CO2_CONC                       CO2 concentration.
CO2_CONC_2                     CO2 concentration.
CH4_CONC                       CH4 concentration.
CH4_CONC_2                     CH4 concentration.
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-???).

REVISION_DATE                  The most recent date that the information in the
                               referenced data base table record was revised.


7.3.3 Unit of Measurement   

Column Name                                Units
------------------------------ ------------------------------------------------
SITE_NAME                      [none]
SUB_SITE                       [none]
DATE_OBS                       [DD-MON-YYYY]
TIME_OBS                       [HHMM GMT]
CO2_FLUX                       [micromoles][meter-2][second-1]
CH4_FLUX                       [micromoles][meter-2][second-1]
COVER_TYPE                     [none]
SOIL_TEMP_1CM                  [degrees Celsius]
SOIL_TEMP_5CM                  [degrees Celsius]
SOIL_TEMP_10CM                 [degrees Celsius]
SOIL_TEMP_20CM                 [degrees Celsius]
COLLAR_ID                      [none]
CO2_CONC                       [parts per million]
CO2_CONC_2                     [parts per million]
CH4_CONC                       [parts per million]
CH4_CONC_2                     [parts per million]
CRTFCN_CODE                    [none]
REVISION_DATE                  [DD-MON-YYYY]

7.3.4 Data Source

Column Name                             Data Source
------------------------------ ------------------------------------------------
SITE_NAME                      Not applicable
SUB_SITE                       Not applicable
DATE_OBS                       Investigator
TIME_OBS                       Investigator
CO2_FLUX                       Calculated by investigator
CH4_FLUX		       Calculated by investigator
COVER_TYPE                     Determined by investigator
SOIL_TEMP_1CM                  Thermocouple
SOIL_TEMP_5CM                  Thermocouple
SOIL_TEMP_10CM                 Thermocouple
SOIL_TEMP_20CM                 Thermocouple
COLLAR_ID                      Thermocouple
CO2_CONC                       Shimadzu GC-14A
CO2_CONC_2                     Shimadzu GC-14A
CH4_CONC                       Shimadzu GC-14A
CH4_CONC_2                     Shimadzu GC-14A
CRTFCN_CODE                    Shimadzu GC-14A
REVISION_DATE                  Shimadzu GC-14A

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-BVP-FLXTR  NSA-YJP-FLXTR  None    None   None    None
SUB_SITE             TGB01-FLX01    TGB01-FLX01    None    None   None    None
DATE_OBS             16-MAY-1994    13-SEP-1994    None    None   None    None
TIME_OBS             0              2316           None    None   None    None
CO2_FLUX             -3.9236111     10.6365741     -999    -888   None    None
CH4_FLUX             -0.0062153      2.4537037     -999    -888   None    None
COVER_TYPE           N/A            N/A            None    None   None    None
SOIL_TEMP_1CM        1              40.3           -999    None   None    Blank
SOIL_TEMP_5CM        2.8            28.4           -999    None   None    Blank
SOIL_TEMP_10CM       -1             23.1           -999    None   None    None
SOIL_TEMP_20CM       -1.9           99.7           -999    None   None    Blank
COLLAR_ID            C-OBS-01       M-OBS-w-16     None    None   None    None
CO2_CONC             363.5          472.5          None    None   None    Blank
CO2_CONC_2           364            504.3          -999    None   None    Blank
CH4_CONC             1.945          2.319          None    None   None    Blank
CH4_CONC_2           2.066          2.262          -999    None   None    Blank
CRTFCN_CODE          PRE            CPI            None    None   None    None
REVISION_DATE        23-AUG-1996    14-JAN-1997    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
                      instrument's 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 BOREAS Information System (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,CO2_FLUX,CH4_FLUX,COVER_TYPE,SOIL_TEMP_1CM,
SOIL_TEMP_5CM,SOIL_TEMP_10CM,SOIL_TEMP_20CM,COLLAR_ID,CO2_CONC,CO2_CONC_2,
CH4_CONC,CH4_CONC_2,CRTFCN_CODE,REVISION_DATE
'NSA-BVP-FLXTR','TGB01-FLX01',19-MAY-1994,1731,-888.0,.00327546,'Lichen',,3.6,
.7,-.6,'M-BP-ul-17',,,,,'CPI',13-JAN-1997
'NSA-BVP-FLXTR','TGB01-FLX01',19-MAY-1994,1731,-888.0,0.0,'Lichen',,3.6,.7,-.6,
'M-BP-ul-18',,,,,'CPI',13-JAN-1997
