BOREAS Level-1b MAS Imagery: At-Sensor Radiance, Relative X and Y Coordinates 7.3 Data Characteristics 7.3.1 Parameter/Variable The parameters contained in the inventory listing file are: Column Name ------------------------------ SPATIAL_COVERAGE DATE_OBS START_TIME END_TIME PLATFORM INSTRUMENT NUM_BANDS PLATFORM_ALTITUDE MIN_SOLAR_ZEN_ANG MAX_SOLAR_ZEN_ANG MIN_SOLAR_AZ_ANG MAX_SOLAR_AZ_ANG C130_MISSION_ID C130_LINE_NUM C130_RUN_NUM C130_SITE BAND_QUALITY CLOUD_COVER MAS_SCAN_SPEED NW_LATITUDE NW_LONGITUDE NE_LATITUDE NE_LONGITUDE SW_LATITUDE SW_LONGITUDE SE_LATITUDE SE_LONGITUDE CRTFCN_CODE 7.3.2 Variable Description/Definition The descriptions of the parameters contained in the inventory listing file are: Column Name Description ------------------------------ ------------------------------------------------ SPATIAL_COVERAGE The general term used to denote the spatial area over which the data were collected. DATE_OBS The date on which the data were collected. START_TIME The starting Greenwich Mean Time (GMT) for the data collected. END_TIME The ending Greenwich Mean Time (GMT) for the data collected. PLATFORM The object (e.g., satellite, aircraft, tower, person) that supported the instrument. INSTRUMENT The name of the device used to make the measurements. NUM_BANDS The number of spectral bands in the data. PLATFORM_ALTITUDE The nominal altitude of the data collection platform above the target. MIN_SOLAR_ZEN_ANG The minimum angle from the surface normal (straight up) to the sun during the data collection. MAX_SOLAR_ZEN_ANG The maximum angle from the surface normal (straight up) to the sun during the data collection. MIN_SOLAR_AZ_ANG The minimum azimuthal direction of the sun during data collection expressed in clockwise increments from North. MAX_SOLAR_AZ_ANG The maximum azimuthal direction of the sun during data collection expressed in clockwise increments from North. C130_MISSION_ID The mission identifier assigned to the C130 mission in the form of YY-DDD-FF where YY is the last two digits of the fiscal year, DDD is the deployment number for "official" C130 missions and is day of year for non-"official" C130 missions (ie, no site coverage), and FF is the flight number within the given deployment (00 is given for non-"official" C130 missions). An example would be 94-006-04. C130_LINE_NUM The number of the C130 line in its flights over the BOREAS area as given in the flight logs. Zero values are given for non-"official" C130 missions and for data between C130 sites or lines. C130_RUN_NUM The number of the C130 run in its flights over the BOREAS area as given in the flight logs. Zero value is given for non-"official" C130 missions and data between C130 sites, lines or runs. C130_SITE The C130 site designator as given in the flight logs. PRE is used for data taken from the airport to the first "official" C130 site, BTW is used for data taken between two "official" C130 sites, DSC is used for data taken after the last "official" C130 site, TRN is used for transect data, and YTH and YPA are used for data taken at the YTH and YPA airports (aircraft never left the ground). BAND_QUALITY The data analyst's assessment of the quality of the spectral bands in the data. CLOUD_COVER The data analyst's assessment of the cloud cover that exists in the data. MAS_SCAN_SPEED The rate of scan line data collection by the MAS instrument during the given flight. NW_LATITUDE The NAD83 based latitude coordinate of the north- west corner of the minimum bounding rectangle for the data. NW_LONGITUDE The NAD83 based longitude coordinate of the northwest corner of the minimum bounding rectangle for the data. NE_LATITUDE The NAD83 based latitude coordinate of the north east corner of the minimum bounding rectangle for the data. NE_LONGITUDE The NAD83 based longitude coordinate of the north east corner of the minimum bounding rectangle for the data. SW_LATITUDE The NAD83 based latitude coordinate of the south west corner of the minimum bounding rectangle for the data. SW_LONGITUDE The NAD83 based longitude coordinate of the southwest corner of the minimum bounding rectangle for the data. SE_LATITUDE The NAD83 based latitude coordinate of the south east corner of the minimum bounding rectangle for the data. SE_LONGITUDE The NAD83 based longitude coordinate of the southeast corner of the minimum bounding rectangle for the data. 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). 7.3.3 Unit of Measurement The measurement units for the parameters contained in the inventory listing file are: SPATIAL_COVERAGE [none] DATE_OBS [DD-MON-YYYY] START_TIME [HHMM GMT] END_TIME [HHMM GMT] PLATFORM [none] INSTRUMENT [none] NUM_BANDS [counts] PLATFORM_ALTITUDE [meters] MIN_SOLAR_ZEN_ANG [degrees] MAX_SOLAR_ZEN_ANG [degrees] MIN_SOLAR_AZ_ANG [degrees] MAX_SOLAR_AZ_ANG [degrees] C130_MISSION_ID [none] C130_LINE_NUM [none] C130_RUN_NUM [none] C130_SITE [none] BAND_QUALITY [none] CLOUD_COVER [none] MAS_SCAN_SPEED [scan lines][second^-1] NW_LATITUDE [degrees] NW_LONGITUDE [degrees] NE_LATITUDE [degrees] NE_LONGITUDE [degrees] SW_LATITUDE [degrees] SW_LONGITUDE [degrees] SE_LATITUDE [degrees] SE_LONGITUDE [degrees] CRTFCN_CODE [none] 7.3.4 Data Source The source of the parameter values contained in the inventory listing file are: Column Name Data Source ------------------------------ ------------------------------------------------ SPATIAL_COVERAGE [Determined from latitude and longitude information provided in the NASA Ames flight summary reports and navigation data files] DATE_OBS [Software extracted from MAS HDF files] START_TIME [Software extracted from MAS HDF files] END_TIME [Software extracted from MAS HDF files] PLATFORM [Data base constant] INSTRUMENT [Data base constant] NUM_BANDS [Data base constant] PLATFORM_ALTITUDE [Determined from information provided in the NASA Ames flight summary reports] MIN_SOLAR_ZEN_ANG [Calculated with software from latitude and longitude and time information] MAX_SOLAR_ZEN_ANG [Calculated with software from latitude and longitude and time information] MIN_SOLAR_AZ_ANG [Calculated with software from latitude and longitude and time information] MAX_SOLAR_AZ_ANG [Calculated with software from latitude and longitude and time information] C130_MISSION_ID [Taken from the delivered tape label and the NASA Ames Flight Summary Reports] C130_LINE_NUM [Taken from the delivered tape label and the NASA Ames Flight Summary Reports] C130_RUN_NUM [Taken from the delivered tape label and the NASA Ames Flight Summary Reports] C130_SITE [Taken from the delivered tape label and the NASA Ames Flight Summary Reports] BAND_QUALITY [Constant software parameter value] CLOUD_COVER [Constant software parameter value] MAS_SCAN_SPEED [Software extracted from MAS HDF files] NW_LATITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] NW_LONGITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] NE_LATITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] NE_LONGITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] SW_LATITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] SW_LONGITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] SE_LATITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] SE_LONGITUDE [Calculated with software from the C130 altitude and heading, starting and ending flight line latitude and longitude, and the static MAS scan angle information] CRTFCN_CODE [Constant data base value] 7.3.5 Data Range The following table gives information about the parameter values found in the inventory table. Minimum Maximum Missng Unrel Below Data Data Data Data Data Detect Not Column Name Value Value Value Value Limit Cllctd -------------------------------------------------------------------------------- SPATIAL_COVERAGE N/A N/A None None None None DATE_OBS 21-JUL-1994 08-AUG-1994 None None None None START_TIME 1431 2110 None None None None END_TIME 1435 2115 None None None None PLATFORM C130 C130 None None None None INSTRUMENT N/A N/A None None None None NUM_BANDS 12 12 None None None None PLATFORM_ALTITUDE 5369 7962 None None None None MIN_SOLAR_ZEN_ANG 33.5 60.8 None None None None MAX_SOLAR_ZEN_ANG 33.5 60.8 None None None None MIN_SOLAR_AZ_ANG 104.7 228.4 None None None None MAX_SOLAR_AZ_ANG 104.7 228.4 None None None None C130_MISSION_ID 94-007-02 94-007-07 None None None None C130_LINE_NUM 1 703 None None None None C130_RUN_NUM 1 2 None None None None C130_SITE 429 432 None None None None BAND_QUALITY N/A N/A None None None None CLOUD_COVER N/A N/A None None None None MAS_SCAN_SPEED 6.25 6.25 None None None None NW_LATITUDE 53.67695 56.08457 None None None None NW_LONGITUDE -106.49118 -98.43622 None None None None NE_LATITUDE 53.65457 56.02245 None None None None NE_LONGITUDE -106.04228 -98.01404 None None None None SW_LATITUDE 53.45052 55.92475 None None None None SW_LONGITUDE -106.50745 -98.48084 None None None None SE_LATITUDE 53.44061 55.88116 None None None None SE_LONGITUDE -106.06016 -98.06009 None None None None CRTFCN_CODE CPI-PRE CPI-PRE 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 SPATIAL_COVERAGE,DATE_OBS,START_TIME,END_TIME,PLATFORM,INSTRUMENT,NUM_BANDS, PLATFORM_ALTITUDE,MIN_SOLAR_ZEN_ANG,MAX_SOLAR_ZEN_ANG,MIN_SOLAR_AZ_ANG, MAX_SOLAR_AZ_ANG,C130_MISSION_ID,C130_LINE_NUM,C130_RUN_NUM,C130_SITE, BAND_QUALITY,CLOUD_COVER,MAS_SCAN_SPEED,NW_LATITUDE,NW_LONGITUDE,NE_LATITUDE, NE_LONGITUDE,SW_LATITUDE,SW_LONGITUDE,SE_LATITUDE,SE_LONGITUDE,CRTFCN_CODE 'SSA',21-JUL-1994,1546,1549,'C130','MAS',12,7962.0,50.1,50.1,111.9,111.9, '94-007-02',1,1,'430','Fair: some noise in IR channels','NOT ASSESSED', 6.25,54.09045,-104.73796,54.06945,-104.35302,53.94723,-104.7599,53.9263, -104.3763,'CPI-PRE' 'SSA',21-JUL-1994,1555,1600,'C130','MAS',12,7847.0,48.7,48.7,114.7,114.7, '94-007-02',2,1,'430','Fair: some noise in IR channels','NOT ASSESSED', 6.25,54.1104,-104.95096,54.07979,-104.37902,53.91345,-104.98007,53.88298, -104.41086,'CPI-PRE'