BOREAS TF-11 Decomposition

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                                                                        
START_OBS_DATE                                                                  
END_OBS_DATE                                                                    
PEAT_DEPTH                                                                      
C_ADDED                                                                         
N_ADDED                                                                         
DURATION                                                                        
REPLICATE_ID                                                                    
LITTER_MASS_FRACTION                                                            
C_CONC                                                                          
H_CONC                                                                          
N_CONC                                                                          
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. 
START_OBS_DATE                 The date and time at which collection of the 
                               referenced data commenced. 
END_OBS_DATE                   The date and time at which collection of the 
                               referenced data was terminated. 
PEAT_DEPTH                     The depth below the peat surface.                
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.                   
DURATION                       Duration of time that the samples were in the 
                               field since 21-JUL-1994 or 02-AUG-1994.                
REPLICATE_ID                   Replicate id, where 2 denotes a replicate.       
LITTER_MASS_FRACTION           Fraction of original litter mass remaining.      
C_CONC                         Carbon concentration of remaining littermass     
H_CONC                         Hydrogen concentration of remaining littermass   
N_CONC                         Nitrogen concentration of remaining littermass   
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]                                           
START_OBS_DATE                 [none]                                           
END_OBS_DATE                   [none]                                           
PEAT_DEPTH                     [millimeters]                                    
C_ADDED                        [grams C][meter^-2]                              
N_ADDED                        [grams C][meter^-2]                              
DURATION                       [days]                                           
REPLICATE_ID                   [unitless]                                       
LITTER_MASS_FRACTION           [unitless]                                       
C_CONC                         [grams C][grams litter^-1]                       
H_CONC                         [grams H][grams litter^-1]                       
N_CONC                         [grams N][grams litter^-1]                       
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]                         
START_OBS_DATE                 [Investigator]                                
END_OBS_DATE                   [Investigator]                                
PEAT_DEPTH                     [Investigator]                                
C_ADDED                        [Investigator]                                
N_ADDED                        [Investigator]                                
DURATION                       [Investigator]                                
REPLICATE_ID                   [Investigator]                                
LITTER_MASS_FRACTION           [Balance]                                
C_CONC                         [Leco CHN analyzer]                                
H_CONC                         [Leco CHN analyzer]                                
N_CONC                         [Leco CHN analyzer]                                
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-DEC01    9TF11-DEC07    None    None   None    None 
START_OBS_DATE       21-JUL-1994    02-AUG-1994    None    None   None    None 
END_OBS_DATE         17-SEP-1994    17-SEP-1994    None    None   None    None 
PEAT_DEPTH           0              100            None    None   None    None 
C_ADDED              0              300            None    None   None    None 
N_ADDED              0              6              None    None   None    None 
DURATION             46             58             None    None   None    None 
REPLICATE_ID         1              2              None    None   None    None 
LITTER_MASS_FRACTION .64            1.14           None    None   None    None 
C_CONC               .361           .469           None    None   None    None 
H_CONC               .05            .063           None    None   None    None 
N_CONC               .002           .008           None    None   None    None 
SITE_COMMENTS        N/A            N/A            None    None   None    None 
CRTFCN_CODE          CPI            CPI            None    None   None    None 
REVISION_DATE        01-OCT-1998    01-OCT-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,START_OBS_DATE,END_OBS_DATE,PEAT_DEPTH,C_ADDED,N_ADDED,
DURATION,REPLICATE_ID,LITTER_MASS_FRACTION,C_CONC,H_CONC,N_CONC,SITE_COMMENTS,
CRTFCN_CODE,REVISION_DATE
'SSA-FEN-FLXTR','9TF11-DEC01',21-JUL-1994,17-SEP-1994,0,300,6,58,1,.87,.446,
.061,.002,'North of Tower, along transect A','CPI',01-OCT-1998
'SSA-FEN-FLXTR','9TF11-DEC01',21-JUL-1994,17-SEP-1994,0,300,0,58,1,.96,.454,
.062,.004,'North of Tower, along transect A','CPI',01-OCT-1998
