netcdf sgpnfovC1.b1.20070614.181317 { dimensions: time = UNLIMITED ; // (6655 currently) numfields = 6 ; variables: int base_time ; base_time:string = "14-Jun-2007,18:04:12 GMT" ; base_time:long_name = "Base time in Epoch" ; base_time:units = "seconds since 1970-1-1 0:00:00 0:00" ; double time_offset(time) ; time_offset:long_name = "Time offset from base_time" ; time_offset:units = "seconds since 2007-06-14 18:04:12 0:00" ; double time(time) ; time:long_name = "Time offset from midnight" ; time:units = "seconds since 2007-06-14 00:00:00 0:00" ; int qc_time(time) ; qc_time:long_name = "Results of quality checks on sample time" ; qc_time:units = "unitless" ; qc_time:description = "The qc_time values are calculated by comparing each sample\n", "time with the previous time (i.e. delta_t = t[n] - t[n-1]).\n", "If the \'qc_check_prior\' flag is set the first sample time\n", "from a new raw file will be compared against the time just\n", "previous to it in the stored data. If the \'qc_check_prior\'\n", "flag is not set the qc_time value for the first sample time\n", "will be set to 0\n", "\n", "The qc_time bit values are as follows:\n", "=========================================================\n", "0x0 = delta time is within the specified range\n", "0x1 = delta time is equal to 0, duplicate sample times\n", "0x2 = delta time is less than the \'delta_t_lower_limit\'\n", "0x4 = delta time is greater than the \'delta_t_upper_limit\'\n", "\n", "" ; qc_time:delta_t_lower_limit = 1 ; qc_time:delta_t_upper_limit = 1 ; qc_time:prior_sample_flag = 1 ; float raw_counts(time) ; raw_counts:long_name = "Raw counts from instrument before calibration" ; raw_counts:units = "counts" ; raw_counts:valid_min = 0.f ; raw_counts:valid_max = 4096.f ; raw_counts:resolution = 1.f ; int qc_raw_counts(time) ; qc_raw_counts:long_name = "Quality check results on field: Raw counts from instrument before calibration" ; qc_raw_counts:units = "unitless" ; float radiance(time) ; radiance:long_name = "Calibrated Zenith Radiance" ; radiance:units = "W/m2/nm/sr" ; radiance:valid_min = 0.f ; radiance:valid_max = 0.5f ; radiance:resolution = 0.0001f ; int qc_radiance(time) ; qc_radiance:long_name = "Quality check results on field: Calibrated Zenith Radiance" ; qc_radiance:units = "unitless" ; float head_temp(time) ; head_temp:long_name = "Detector Temperature" ; head_temp:units = "degC" ; head_temp:valid_min = 30.f ; head_temp:valid_max = 50.f ; head_temp:resolution = 0.01f ; int qc_head_temp(time) ; qc_head_temp:long_name = "Quality check results on field: Detector Temperature" ; qc_head_temp:units = "unitless" ; float tube_temp(time) ; tube_temp:long_name = "Tube Temperature" ; tube_temp:units = "degC" ; tube_temp:valid_min = 20.f ; tube_temp:valid_max = 50.f ; tube_temp:resolution = 0.01f ; int qc_tube_temp(time) ; qc_tube_temp:long_name = "Quality check results on field: Tube Temperature" ; qc_tube_temp:units = "unitless" ; float ambient_temp(time) ; ambient_temp:long_name = "Ambient Temperature" ; ambient_temp:units = "degC" ; ambient_temp:valid_min = 20.f ; ambient_temp:valid_max = 50.f ; ambient_temp:resolution = 0.01f ; int qc_ambient_temp(time) ; qc_ambient_temp:long_name = "Quality check results on field: Ambient Temperature" ; qc_ambient_temp:units = "unitless" ; float radiance_temp_cor(time) ; radiance_temp_cor:long_name = "Calibrated zenith radiance data corrected for changes in head temperature." ; radiance_temp_cor:units = "W/m2/nm/sr" ; radiance_temp_cor:valid_min = 0.f ; radiance_temp_cor:valid_max = 0.5f ; radiance_temp_cor:resolution = 0.01f ; int qc_radiance_temp_cor(time) ; qc_radiance_temp_cor:long_name = "Quality check results on field: Calibrated zenith radiance data corrected for changes in head temperature." ; qc_radiance_temp_cor:units = "unitless" ; float cosine_solar_zenith_angle(time) ; cosine_solar_zenith_angle:long_name = "Cosine Solar Zenith Angle" ; cosine_solar_zenith_angle:units = "unitless" ; cosine_solar_zenith_angle:valid_min = -1.f ; cosine_solar_zenith_angle:valid_max = 1.f ; int qc_cosine_solar_zenith_angle(time) ; qc_cosine_solar_zenith_angle:long_name = "Quality check results on field: Cosine Solar Zenith Angle" ; qc_cosine_solar_zenith_angle:units = "unitless" ; short callang_flags(time, numfields) ; callang_flags:long_name = "Fields flagged by callang" ; callang_flags:units = "unitless" ; callang_flags:missing_value = -9999s ; callang_flags:comment = "0 = no flag \n", "1 = divide by zero error \n", "2 = ln of zero error \n", "3 = zero cosine error \n", "4 = Night time" ; float lat ; lat:long_name = "north latitude" ; lat:units = "degrees" ; lat:valid_min = -90.f ; lat:valid_max = 90.f ; float lon ; lon:long_name = "east longitude" ; lon:units = "degrees" ; lon:valid_min = -180.f ; lon:valid_max = 180.f ; float alt ; alt:long_name = "altitude" ; alt:units = "meters above Mean Sea Level" ; // global attributes: :ingest_version = "process-ingest-mfr_ingest-7.19-0" ; :libingest_version = "ds-dsutil-ingest_lib-1.7-0" ; :libdslibc_version = "ds-dslib-c_lib-1.2-0" ; :libdsdb_version = "database-dsdb-c_lib-1.2-0" ; :ingest_software = " mfr_ingest.c,v 1.46 2006/09/14 20:08:46 koontz process-ingest-mfr_ingest-7.19-0 $" ; :input_source = "/data/collection/sgp/sgpnfovC1.00/20070614190405.C1" ; :site_id = "sgp" ; :facility_id = "C1: Lamont, Oklahoma" ; :comment = "The time assigned to each data point indicates the end of any period of \n", "averaging of the geophysical data." ; :resolution_description = "The resolution field attributes refer to the number of significant\n", "digits relative to the decimal point that should be used in\n", "calculations. Using fewer digits might result in greater uncertainty;\n", "using a larger number of digits should have no effect and thus is\n", "unnecessary. However, analyses based on differences in values with\n", "a larger number of significant digits than indicated could lead to\n", "erroneous results or misleading scientific conclusions.\n", "\n", "resolution for lat= 0.001\n", "resolution for lon = 0.001\n", "resolution for alt = 1" ; :CalibInfo_used = "CalibInfo.sgpnfovC1.20060322.0" ; :SolarInfo_used = "SolarInfo.sgpnfovC1.20060322.0" ; :mfr_internal_latitude = "36.600952" ; :mfr_internal_longitude = "97.481689" ; :proc_level = "b1" ; :qc_method = "Standard Mentor QC" ; :Mentor_QC_Field_Information = "For each qc_ interpret the values as follows:\n", "\n", "Basic mentor QC checks (bit values):\n", "==========================================\n", "0x0 = value is within the specified range\n", "0x1 = value is equal to \'missing_value\'\n", "0x2 = value is less than the \'valid_min\'\n", "0x4 = value is greater than the \'valid_max\'\n", "0x8 = value failed the \'valid_delta\' check\n", "\n", "If the value is a \'missing_value\' no min, max, or delta checks are performed.\n", "\n", "The delta checks are done by comparing each data value to the one just\n", "prior to it in time. If a previous data value does not exist or is a\n", "\'missing_value\' the delta check will not be performed.\n", "\n", "Note that the delta computation for multi-dimensioned data compares the\n", "absolute value between points in the same spatial location to the previous\n", "point in time.\n", "\n", "If the associated non-QC field does not contain any mentor-specified minimum,\n", "maximum, or delta information a qc_field is not generated.\n", "" ; :sample_int = "1 seconds" ; :averaging_int = "1 seconds" ; :logger_software_version = "13" ; :serial_number = "F5C8" ; :head_id = "EEBC" ; :flags = "0" ; :alltime_aux = "3211267" ; :dayonly_aux = "0" ; :record_size = "36000" ; :zeb_platform = "sgpnfovC1.b1" ; :history = "created by user dsmgr on machine ruby at 14-Jun-2007,19:13:05, using $State: ds-zebra-zeblib-4.16-0 $" ; }