BOREAS 1996 Snow Pit Measurements: HYD-03 7.3 Data Characteristics 7.3.1 Parameter/Variable HYD03_SNOW_PITS_96_DATA Column Name ------------------------------ SITE_NAME SUB_SITE DATE_OBS SNOW_LAYER_TOP_HT SNOW_LAYER_BOTM_HT SNOW_DENSITY_1 SNOW_DENSITY_2 SNOW_DENSITY_3 PARM_VALUE_FLAGS SNOW_TEMP SNOW_TEMP_HT CRTFCN_CODE REVISION_DATE 7.3.2 Variable Description/Definition HYD03_SNOW_PITS_96_DATA 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. SNOW_LAYER_TOP_HT The upper height of a layer or "horizon" of snow. SNOW_LAYER_BOTM_HT The lower height of a layer or "horizon" of snow. SNOW_DENSITY_1 The first snow density measurement. SNOW_DENSITY_2 The second snow density measurement. SNOW_DENSITY_3 The third snow density measurement. PARM_VALUE_FLAGS This contains values or codes that indicate special conditions for the data parameters. N/A = not applicable. SNOW_TEMP The temperature of the snow at the reported snow height. SNOW_TEMP_HT The height above the surface at which the snow temperature measurement was made. 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 HYD03_SNOW_PITS_96_DATA Column Name Units ------------------------------ ------------------------------------------------ SITE_NAME [none] SUB_SITE [none] DATE_OBS [DD-MON-YYYY] SNOW_LAYER_TOP_HT [millimeters] SNOW_LAYER_BOTM_HT [millimeters] SNOW_DENSITY_1 [kilograms][meter^-3] SNOW_DENSITY_2 [kilograms][meter^-3] SNOW_DENSITY_3 [kilograms][meter^-3] PARM_VALUE_FLAGS [none] SNOW_TEMP [degrees Celsius] SNOW_TEMP_HT [millimeters] CRTFCN_CODE [none] REVISION_DATE [DD-MON-YYYY] 7.3.4 Data Source HYD03_SNOW_PITS_96_DATA Column Name Data Source ------------------------------ ------------------------------------------------ SITE_NAME [Assigned by BORIS] SUB_SITE [Assigned by BORIS] DATE_OBS [Supplied by Investigator] SNOW_LAYER_TOP_HT [Supplied by Investigator] SNOW_LAYER_BOTM_HT [Supplied by Investigator] SNOW_DENSITY_1 [Supplied by Investigator] SNOW_DENSITY_2 [Supplied by Investigator] SNOW_DENSITY_3 [Supplied by Investigator] PARM_VALUE_FLAGS [Supplied by Investigator] SNOW_TEMP [Supplied by Investigator] SNOW_TEMP_HT [Supplied by Investigator] CRTFCN_CODE [Assigned by Investigator] REVISION_DATE [Assigned by Investigator] 7.3.5 Data Range HYD03_SNOW_PITS_96_DATA Minimum Maximum Missng Unrel Below Data Data Data Data Data Detect Not Column Name Value Value Value Value Limit Cllctd -------------------------------------------------------------------------------- SITE_NAME SSA-999-WSK04 SSA-WAT-FLXTR None None None None SUB_SITE HYD03-SPT01 HYD03-SPT01 None None None None DATE_OBS 29-FEB-1996 12-MAR-1996 None None None None SNOW_LAYER_TOP_HT 20 410 None None None Blank SNOW_LAYER_BOTM_HT 0 380 None None None Blank SNOW_DENSITY_1 114 397 None None None Blank SNOW_DENSITY_2 117 401 None None None Blank SNOW_DENSITY_3 119 322 None None None Blank PARM_VALUE_FLAGS N/A N/A None None None Blank SNOW_TEMP -21 0 None None None Blank SNOW_TEMP_HT 0 400 None None None Blank CRTFCN_CODE CPI CPI None None None None REVISION_DATE 28-JAN-1997 28-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 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,SNOW_LAYER_TOP_HT,SNOW_LAYER_BOTM_HT,SNOW_DENSITY_1, SNOW_DENSITY_2,SNOW_DENSITY_3,PARM_VALUE_FLAGS,SNOW_TEMP,SNOW_TEMP_HT, CRTFCN_CODE,REVISION_DATE 'SSA-AGR-HYD03','HYD03-SPT01',01-MAR-1996,250,220,193,204,232,'',-6,240,'CPI', 28-JAN-1997 'SSA-AGR-HYD03','HYD03-SPT01',01-MAR-1996,220,190,175,201,,'',-5,200,'CPI', 28-JAN-1997