BOREAS TGB-10 Oxidant Flux Data over the SSA

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
H2O2_CONC
ROOH_CONC
H2O2_CONC_GRAD
ROOH_CONC_GRAD
EDDY_DIFF
MEAN_H2O2_DEP_VELOC
SDEV_H2O2_DEP_VELOC
MEAN_ROOH_DEP_VELOC
SDEV_ROOH_DEP_VELOC
QUALITY_CODE
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.
H2O2_CONC                    The hydrogen peroxide concentration.
ROOH_CONC                    The organic peroxide concentration.
H2O2_CONC_GRAD               Hydrogen peroxide concentration gradient.
ROOH_CONC_GRAD               The oganic peroxide concentration gradient.
EDDY_DIFF                    Eddy diffusivity for heat.
MEAN_H2O2_DEP_VELOC          The mean deposition velocity of hydrogen peroxide.
SDEV_H2O2_DEP_VELOC          The standard deviation of the deposition velocity 
                             of hydrogen peroxide.
MEAN_ROOH_DEP_VELOC          The mean deposition velocity of organic peroxides.
SDEV_ROOH_DEP_VELOC          The standard deviation of the deposition velocity 
                             of organic peroxides.
QUALITY_CODE                 1:good data: normal operation, 2:good data: normal 
                             operation, but uncertainties are greater due to 
                             non-ideal sampling condition or equipment 
                             function, 3:data questionable or possible 
                             instrument malfunction
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]
H2O2_CONC                      [parts per billion]
ROOH_CONC                      [parts per billion]
H2O2_CONC_GRAD                 [parts per billion][meter^-1]
ROOH_CONC_GRAD                 [parts per billion][meter^-1]
EDDY_DIFF                      [meters^2][second^-1]
MEAN_H2O2_DEP_VELOC            [millimeters][second^-1]
SDEV_H2O2_DEP_VELOC            [millimeters][second^-1]
MEAN_ROOH_DEP_VELOC            [millimeters][second^-1]
SDEV_ROOH_DEP_VELOC            [millimeters][second^-1]
QUALITY_CODE                   [unitless]
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                      Not applicable
SUB_SITE                       Not applicable
DATE_OBS                       Investigator
TIME_OBS                       Investigator
H2O2_CONC                      Gas chromatograph
ROOH_CONC                      Gas chromatograph
H2O2_CONC_GRAD                 Gas chromatograph
ROOH_CONC_GRAD                 Gas chromatograph
EDDY_DIFF                      PL Gas chromatograph
MEAN_H2O2_DEP_VELOC            Gas chromatograph]
SDEV_H2O2_DEP_VELOC            Gas chromatograph
MEAN_ROOH_DEP_VELOC            Gas chromatograph
SDEV_ROOH_DEP_VELOC            Gas chromatograph
QUALITY_CODE                   Investigator
CRTFCN_CODE                    Not applicable
REVISION_DATE                  Not applicable

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-OJP-FLXTR  SSA-OJP-FLXTR  None    None   None    None
SUB_SITE             TGB10-FLX01    TGB10-FLX01    None    None   None    None
DATE_OBS             25-MAY-1994    09-SEP-1994    None    None   None    None
TIME_OBS             0              2358           None    None   None    None
H2O2_CONC            -.01           3.55           None    None   None    None
ROOH_CONC            -.03           1.55           None    None   None    None
H2O2_CONC_GRAD       -.1088         .1799          None    None   None    None
ROOH_CONC_GRAD       -.0199         .0618          None    None   None    None
EDDY_DIFF            -1             10.64          None    None   None    None
MEAN_H2O2_DEP_VELOC  -195.6         278.4          -999    None   None    None
SDEV_H2O2_DEP_VELOC  0              34.1           -999    None   None    None
MEAN_ROOH_DEP_VELOC  -139.6         286.5          -999    None   None    None
SDEV_ROOH_DEP_VELOC  0              20.3           -999    None   None    None
QUALITY_CODE         1              3              None    None   None    None
CRTFCN_CODE          CPI            CPI            None    None   None    None
REVISION_DATE        24-OCT-1996    24-OCT-1996    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,H2O2_CONC,ROOH_CONC,H2O2_CONC_GRAD,
ROOH_CONC_GRAD,EDDY_DIFF,MEAN_H2O2_DEP_VELOC,SDEV_H2O2_DEP_VELOC,
MEAN_ROOH_DEP_VELOC,SDEV_ROOH_DEP_VELOC,QUALITY_CODE,CRTFCN_CODE,REVISION_DATE
'SSA-OJP-FLXTR','TGB10-FLX01',25-MAY-1994,609,.59,.42,.0145,0.0,-1.0,-999.0,
-999.0,-999.0,-999.0,2,'CPI',24-OCT-1996
'SSA-OJP-FLXTR','TGB10-FLX01',25-MAY-1994,650,.56,.42,.0153,-.0006,-1.0,-999.0
,-999.0,-999.0,-999.0,2,'CPI',24-OCT-1996
