BOREAS TE-10 Leaf Gas Exchange Data

7.3 Data Characteristics                                                        

7.3.1 Parameter/Variable                                                        
                                                                                
The parameters contained in the 1994 data files are:                   
      
Column Name                                                            
------------------------------                                                  
SITE_NAME                                                                       
SUB_SITE                                                                        
DATE_OBS                                                                        
SPECIES                                                                         
CANOPY_LOCATION                                                                 
SAMPLE_GROWTH_YEAR                                                              
SAMPLE_NUM                                                                      
CO2_ASSIMILATION                                                                
STOMATAL_MOLAR_CONDUCT_CO2                                                            
TRANSPIRATION_RATE                                                              
INTERCELL_CO2_CONC                                                              
WATER_USE_EFF    
CRTFCN_CODE                                                                     
REVISION_DATE                                                                   
                                                             
The parameters contained in the 1996 data files are:                   

Column Name                                                            
------------------------------                                                  
SITE_NAME                                                                       
SUB_SITE                                                                        
DATE_OBS                                                                        
SPECIES                                                                         
CANOPY_LOCATION                                                                 
SAMPLE_GROWTH_YEAR                                                              
SAMPLE_NUM                                                                      
CO2_ASSIMILATION                                                                
STOMATAL_MOLAR_CONDUCT_CO2                                                            
TRANSPIRATION_RATE                                                              
INTERCELL_CO2_CONC                                                              
WATER_USE_EFF    
DOWN_PPFD_CHAMBER                                                               
LEAF_AREA                                                                       
CRTFCN_CODE                                                                     
REVISION_DATE                                                                   
COMMENTS

7.3.2 Variable Description/Definition                                           
                                                                                
The descriptions of the parameters contained in the 1994 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.       
SPECIES                        Botanical (Latin) name of the species (Genus 
                               species).                                           
CANOPY_LOCATION                Location in the canopy from which the sample was 
                               taken.                                          
SAMPLE_GROWTH_YEAR             The year in which the collected sample first 
                               grew.                                               
SAMPLE_NUM                     The number of the sample.                        
CO2_ASSIMILATION               CO2 assimilation on leaf area basis              
STOMATAL_MOLAR_CONDUCT_CO2     Stomatal conductance of CO2                      
TRANSPIRATION_RATE             Transpiration rate                               
INTERCELL_CO2_CONC             Intercellular CO2 concentration                  
WATER_USE_EFF                  Water use efficiency                             
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.  


The descriptions of the parameters contained in the 1996 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.       
SPECIES                        Botanical (Latin) name of the species (Genus 
                               species).                                           
CANOPY_LOCATION                Location in the canopy from which the sample was 
                               taken.                                          
SAMPLE_GROWTH_YEAR             The year in which the collected sample first 
                               grew.                                               
SAMPLE_NUM                     The number of the sample.                        
CO2_ASSIMILATION               CO2 assimilation on leaf area basis              
STOMATAL_MOLAR_CONDUCT_CO2     Stomatal conductance of CO2                      
TRANSPIRATION_RATE             Transpiration rate                               
INTERCELL_CO2_CONC             Intercellular CO2 concentration                  
WATER_USE_EFF                  Water use efficiency                             
DOWN_PPFD_CHAMBER              The incoming photosynthetic photon flux density  
                               measured in the chamber.                         
LEAF_AREA                      The area of the leaf (or needles) enclosed in the
                               chamber, this value is always half the total  
                               surface area of the sample.                       
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.  
COMMENTS                       Descriptive information to clarify or enhance the 
                               understanding of the other entered data.       


7.3.3 Unit of Measurement                                                       
                                                                                                                                                               
The measurement units for the parameters contained in the 1994 data files are:                                                                 
 
Column Name                                Units                       
------------------------------ ------------------------------------------------ 
SITE_NAME                      [none]                                           
SUB_SITE                       [none]                                           
DATE_OBS                       [DD-MON-YYYY]                                      
SPECIES                        [none]                                           
CANOPY_LOCATION                [none]                                           
SAMPLE_GROWTH_YEAR             [unitless]                                       
SAMPLE_NUM                     [none]                                           
CO2_ASSIMILATION               [micromoles CO2][meter^-2][second^-1]            
STOMATAL_MOLAR_CONDUCT_CO2     [millimoles CO2][meter^-2][second^-1]            
TRANSPIRATION_RATE             [millimoles H2O][meter^-2][second^-1]            
INTERCELL_CO2_CONC             [parts per million]                              
WATER_USE_EFF                  [micromoles CO2][millimole H20^-1]               
CRTFCN_CODE                    [none]                                           
REVISION_DATE                  [DD-MON-YYYY]                                      


The measurement units for the parameters contained in the 1996 data files are:                                                                 
 
Column Name                                Units                       
------------------------------ ------------------------------------------------ 
SITE_NAME                      [none]                                           
SUB_SITE                       [none]                                           
DATE_OBS                       [DD-MON-YYYY]                                      
SPECIES                        [none]                                           
CANOPY_LOCATION                [none]                                           
SAMPLE_GROWTH_YEAR             [unitless]                                       
SAMPLE_NUM                     [none]                                           
CO2_ASSIMILATION               [micromoles CO2][meter^-2][second^-1]            
STOMATAL_MOLAR_CONDUCT_CO2     [millimoles CO2][meter^-2][second^-1]            
TRANSPIRATION_RATE             [millimoles H2O][meter^-2][second^-1]            
INTERCELL_CO2_CONC             [parts per million]                              
WATER_USE_EFF                  [micromoles CO2][millimole H20^-1]               
DOWN_PPFD_CHAMBER              [micromoles][meters^-2][second^-1]               
LEAF_AREA                      [millimeter^2]                                   
CRTFCN_CODE                    [none]                                           
REVISION_DATE                  [DD-MON-YYYY]                                      
COMMENTS                       [none]                                           


7.3.4 Data Source                                                               
                                                                                
The source of the parameter values contained in the 1994 data files are:                                                                 
    
Column Name                             Data Source                    
------------------------------ ------------------------------------------------ 
SITE_NAME                      [BORIS Designation]                                
SUB_SITE                       [BORIS Designation]                                
DATE_OBS                       [Human Observer]                                
SPECIES                        [Human Observer]                                
CANOPY_LOCATION                [Human Observer]                                
SAMPLE_GROWTH_YEAR             [Human Observer]                                
SAMPLE_NUM                     [Human Observer]                                
CO2_ASSIMILATION               [Laboratory Equipment]                                
STOMATAL_MOLAR_CONDUCT_CO2     [Laboratory Equipment]                                
TRANSPIRATION_RATE             [Laboratory Equipment]                                
INTERCELL_CO2_CONC             [Laboratory Equipment]                                
WATER_USE_EFF                  [Laboratory Equipment] 
CRTFCN_CODE                    [BORIS Designation]                                
REVISION_DATE                  [BORIS Designation]                                


The source of the parameter values contained in the 1996 data files are:                                                                 
    
Column Name                             Data Source                    
------------------------------ ------------------------------------------------ 
SITE_NAME                      [BORIS Designation]                                
SUB_SITE                       [BORIS Designation]                                
DATE_OBS                       [Human Observer]                                
SPECIES                        [Human Observer]                                
CANOPY_LOCATION                [Human Observer]                                
SAMPLE_GROWTH_YEAR             [Human Observer]                                
SAMPLE_NUM                     [Human Observer]                                
CO2_ASSIMILATION               [Laboratory Equipment]                                
STOMATAL_MOLAR_CONDUCT_CO2     [Laboratory Equipment]                                
TRANSPIRATION_RATE             [Laboratory Equipment]                                
INTERCELL_CO2_CONC             [Laboratory Equipment]                                
WATER_USE_EFF                  [Laboratory Equipment] 
DOWN_PPFD_CHAMBER              [Laboratory Equipment]                                
LEAF_AREA                      [Laboratory Equipment]                                
CRTFCN_CODE                    [BORIS Designation]                                
REVISION_DATE                  [BORIS Designation]                                
COMMENTS                       [Human Observer]                                

7.3.5  Data Range                                                               
                                                                                
The following table gives information about the parameter values found in the 
1994 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-9OA-FLXTR  SSA-YJP-FLXTR  None    None   None    None 
SUB_SITE             9TE10-LGS01    9TE10-LGS02    None    None   None    None 
DATE_OBS             25-MAY-1994    15-SEP-1994    None    None   None    None 
SPECIES              N/A            N/A            None    None   None    None 
CANOPY_LOCATION      bottom         top            None    None   None    None 
SAMPLE_GROWTH_YEAR   1991           1994           None    None   None    None 
SAMPLE_NUM           1              20             None    None   None    None 
CO2_ASSIMILATION     -1.92          19.9           -999    None   None    None 
STOMATAL_MOLAR_      0              .64            -999    None   None    None 
CONDUCT_CO2
TRANSPIRATION_RATE   .19            6.43           -999    None   None    None 
INTERCELL_CO2_CONC   0              640.1          -999    None   None    None 
WATER_USE_EFF        -5.536         8.569          -999    None   None    None 
CRTFCN_CODE          CPI            CPI            None    None   None    None 
REVISION_DATE        30-JUL-1998    30-JUL-1998    None    None   None    None 
--------------------------------------------------------------------------------


The following table gives information about the parameter values found in the 
1996 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-ASP-AUX04  SSA-OBS-FLXTR  None    None   None    None 
SUB_SITE             9TE10-LGS01    9TE10-LGS01    None    None   None    None 
DATE_OBS             19-JUN-1996    15-JUL-1996    None    None   None    None 
SPECIES              N/A            N/A            None    None   None    None 
CANOPY_LOCATION      Top            Top            None    None   None    None 
SAMPLE_GROWTH_YEAR   1995           1996           None    None   None    None 
SAMPLE_NUM           1              10             None    None   None    None 
CO2_ASSIMILATION     -.579          12.08          None    None   None    None 
STOMATAL_MOLAR_      -.488724       .965402        None    None   None    None 
CONDUCT_CO2         
TRANSPIRATION_RATE   .003926        21.630424      None    None   None    None 
INTERCELL_CO2_CONC   -9240.5234     406.7621       None    None   None    None 
WATER_USE_EFF        -2.315888      596.509082     None    None   None    None 
DOWN_PPFD_CHAMBER    71.01          2107           None    None   None    None 
LEAF_AREA            752            3921           None    None   None    None 
CRTFCN_CODE          CPI            CPI            None    None   None    None 
REVISION_DATE        03-SEP-1999    07-SEP-1999    None    None   None    None 
COMMENTS             N/A            N/A            None    None   None    Blank
--------------------------------------------------------------------------------

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,SPECIES,CANOPY_LOCATION,SAMPLE_GROWTH_YEAR,
SAMPLE_NUM,CO2_ASSIMILATION,STOMATAL_MOLAR_CONDUCT_CO2,TRANSPIRATION_RATE,
INTERCELL_CO2_CONC,WATER_USE_EFF,CRTFCN_CODE,REVISION_DATE
'SSA-9OA-FLXTR','9TE10-LGS01',26-MAY-1994,'Corylus cornuta','top','1994',
18,1.42,.07,2.71,292.1,.524,'CPI',30-JUL-1998
'SSA-9OA-FLXTR','9TE10-LGS01',26-MAY-1994,'Corylus cornuta','top','1994',
19,.92,.05,1.87,299.3,.492,'CPI',30-JUL-1998
