BOREAS TF-11 CO2 and CH4 Concentration data from the SSA-Fen

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                                                                         
C_ADDED                                                                          
N_ADDED                                                                          
PEAT_DEPTH                                                                       
PEAT_TEMP                                                                        
DISS_CH4_CONC                                                                    
DISS_CO2_CONC                                                                    
POREWATER_PH                                                                     
SITE_COMMENTS                                                                    
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) when the data were  
                                collected. 
C_ADDED                        Estimated amount of carbon contained in the wheat  
                               straw that was added to the plot. 
N_ADDED                        Estimated amount of nitrogen contained in the  
                               urea that was added to the plot.
PEAT_DEPTH                     The depth below the peat surface.                 
PEAT_TEMP                      The peat temperature measured at the given depth.
DISS_CH4_CONC                  Dissolved methane concentration at the given   
                               depth. 
DISS_CO2_CONC                  Dissolved carbon dioxide concentration at the  
                               given depth. 
POREWATER_PH                   Porewater pH after equilibrium with headspace.    
SITE_COMMENTS                  Descriptive information to clarify or enhance the  
                               site information. 
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]                                        
C_ADDED                        [grams C][meter^-2]                               
N_ADDED                        [grams C][meter^-2]                               
PEAT_DEPTH                     [millimeters]                                     
PEAT_TEMP                      [Celsius]                                         
DISS_CH4_CONC                  [micromoles][liter^-1]                            
DISS_CO2_CONC                  [micromoles][liter^-1]                            
POREWATER_PH                   [pH]                                              
SITE_COMMENTS                  [none]                                            
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 Staff]                                 
SUB_SITE                       [Assigned by BORIS Staff]                                 
DATE_OBS                       [Investigator]                                 
TIME_OBS                       [Investigator]                                 
C_ADDED                        [Investigator]                                 
N_ADDED                        [Investigator]                                 
PEAT_DEPTH                     [Investigator]                                 
PEAT_TEMP                      [Thermometer]                                 
DISS_CH4_CONC                  [Gas chromatograph]                                 
DISS_CO2_CONC                  [Gas chromatorgraph]                                 
POREWATER_PH                   [pH meter]                                 
SITE_COMMENTS                  [Investigator]                                 
CRTFCN_CODE                    [Assigned by BORIS Staff]                                 
REVISION_DATE                  [Assigned by BORIS Staff

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      SSA-FEN-FLXTR  SSA-FEN-FLXTR  None    None   None    None 
SUB_SITE       9TF11-CON01    9TF11-CON08    None    None   None    None 
DATE_OBS       08-JUN-1994    17-SEP-1994    None    None   None    None 
TIME_OBS       1              2202           None    None   None    None 
C_ADDED        0              300            None    None   None    None 
N_ADDED        0              6              None    None   None    None 
PEAT_DEPTH     0              500            None    None   None    None 
PEAT_TEMP      -1.1           20.6           None    None   None    Blank
DISS_CH4_CONC  .01            1750.45        None    None   None    Blank
DISS_CO2_CONC  66             14544          None    None   None    Blank
POREWATER_PH   5.59           7.1            None    None   None    Blank
SITE_COMMENTS  N/A            N/A            None    None   None    None 
CRTFCN_CODE    CPI            CPI            None    None   None    None 
REVISION_DATE  09-SEP-1998    09-SEP-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,C_ADDED,N_ADDED,PEAT_DEPTH,PEAT_TEMP,
DISS_CH4_CONC,DISS_CO2_CONC,POREWATER_PH,SITE_COMMENTS,CRTFCN_CODE,REVISION_DATE
'SSA-FEN-FLXTR','9TF11-CON01',24-AUG-1994,1021,300,6,0,,58.7,3440.0,6.94,
'Hummock: North of Tower, along transect A','CPI',09-SEP-1998
'SSA-FEN-FLXTR','9TF11-CON01',24-AUG-1994,1021,300,6,50,14.1,6.54,3978.0,6.86,
'Hummock: North of Tower, along transect A','CPI',09-SEP-1998
