netcdf sgp10rlprofdep1turnC1.c1.20040106.000000 { dimensions: time = UNLIMITED ; // (144 currently) height = 253 ; variables: int base_time ; base_time:string = "6-Jan-2004,00:00:00 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 2004-1-6 00:00:00 0:00" ; float height(height) ; height:long_name = "Height range of the linear depolarization ratio profile" ; height:units = "km AGL" ; height:comment = "Heights correspond to the middle of the bin" ; float shots_summed(time) ; shots_summed:long_name = "Number of laser shots in the ensemble" ; shots_summed:units = "counts" ; float average_energy(time) ; average_energy:long_name = "Average laser energy of the ensemble shots" ; average_energy:units = "mJ" ; short tweaks(time) ; tweaks:long_name = "Flag denoting the occurrence of power or alignment tweaks" ; tweaks:units = "unitless" ; tweaks:valid_values = "{0,1,2,3}" ; tweaks:explanation_of_0 = "No tweaks occurred during this ensemble" ; tweaks:explanation_of_1 = "A power tweak (adjustment) occurred during this ensemble" ; tweaks:explanation_of_2 = "An alignment tweak occurred during this ensemble" ; tweaks:explanation_of_3 = "Both a power and an alignment tweak occurred during this ensemble" ; short qc_flag(time) ; qc_flag:long_name = "Data quality flag" ; qc_flag:units = "unitless" ; qc_flag:valid_values = "{0,1,2,3}" ; qc_flag:explanation_of_0 = "Data quality ok" ; qc_flag:explanation_of_1 = "Data missing" ; qc_flag:explanation_of_2 = "Hatch not open or signal appears attenuated" ; qc_flag:explanation_of_3 = "Data quality suspect" ; float depolarization_ratio(time, height) ; depolarization_ratio:long_name = "Linear depolarization ratio profile" ; depolarization_ratio:units = "%" ; depolarization_ratio:calculation_comment = "Beam_perpendicular component divided by the beam_parallel component" ; float depolarization_ratio_error(time, height) ; depolarization_ratio_error:long_name = "Uncertainty of the linear depolarization ratio profile" ; depolarization_ratio_error:units = "%" ; float calibration_factor(time) ; calibration_factor:long_name = "Depolarization calibration factor" ; calibration_factor:units = "unitless" ; calibration_factor:comment = "Multiplicative factor automatically derived to maintain a depolarization ratio in clear air of 2%" ; short cloud_mask(time, height) ; cloud_mask:long_name = "Cloud mask" ; cloud_mask:units = "unitless" ; cloud_mask:calculation_comment = "Clouds are identified if the depol ratio is greater than 7.0% and the error is less than 50.0%" ; short attenuation_flag(time) ; attenuation_flag:long_name = "Cloud attenuation flag" ; attenuation_flag:units = "unitless" ; attenuation_flag:explanation_of_values = "0 indicates either no cloud or it appears that the lidar has profiled through the cloud, while 1 indicates that the cloud appears to be optically too thick to profile through" ; float cloud_optical_thickness_n2(time) ; cloud_optical_thickness_n2:long_name = "Cloud optical thickness computed from nitrogen data" ; cloud_optical_thickness_n2:units = "unitless" ; cloud_optical_thickness_n2:Density_calculation_comment = "Density calculated from sgpgaeriprofC1.c1 data" ; cloud_optical_thickness_n2:Min_ht_required = "Minimum height required of cloud base for this field is 5.0 km" ; float cloud_optical_thickness_aer(time) ; cloud_optical_thickness_aer:long_name = "Cloud optical thickness computed from aerosol (elastic) data" ; cloud_optical_thickness_aer:units = "unitless" ; cloud_optical_thickness_aer:Density_calculation_comment = "Density calculated from sgpgaeriprofC1.c1 data" ; cloud_optical_thickness_aer:Min_ht_required = "Minimum height required of cloud base for this field is 5.0 km" ; float cloud_depth(time) ; cloud_depth:long_name = "Cloud depth" ; cloud_depth:units = "km" ; cloud_depth:Min_ht_required = "Minimum height required of cloud base for this field is 5.0 km" ; float cloud_base_height(time) ; cloud_base_height:long_name = "Cloud base height (for first cloud above height threshold)" ; cloud_base_height:units = "km" ; cloud_base_height:Min_ht_required = "Minimum height required of cloud base for this field is 5.0 km" ; float cloud_top_height(time) ; cloud_top_height:long_name = "Cloud top height (for highest cloud sensed)" ; cloud_top_height:units = "km" ; cloud_top_height:comment = "This is a lower bound if the cloud attenuation flag is set" ; cloud_top_height:Min_ht_required = "Minimum height required of cloud base for this field is 5.0 km" ; float lat ; lat:long_name = "north latitude" ; lat:units = "degrees" ; float lon ; lon:long_name = "east longitude" ; lon:units = "degrees" ; float alt ; alt:long_name = "altitude" ; alt:units = "meters above Mean Sea Level" ; // global attributes: :Date = "Mon Jan 12 22:30:20 GMT 2004" ; :Version = "$State: process-vap-rlprof_dep-1.10-0 $" ; :RLprof_Lib_Version = "$State: process-vap-rlprof_lib-1.6-1 $" ; :IDL_Tools_Lib_Version = "$State: ds-idltools-idltools-1.21-0 $" ; :IDL_Version = "VAP coded in IDL (sparc / sunos / unix / 5.4)" ; :Command_Line = "/apps/process/bin/rlprof_dep10 -d 20040106" ; :Number_Input_Platforms = "3" ; :Input_Platforms = "sgprlC1.a0, sgprllogC1.a0, sgpgaeriprofC1.c1" ; :Input_Platforms_Versions = "-999, -999, -888" ; :zeb_platform = "sgp10rlprofdep1turnC1.c1" ; :Averaging_Int = "10 min" ; :Averaging_Comment = "Samples taken with in a mode other than _normal_ or _bright_ are EXCLUDED from the ensemble" ; :missing-data = "-999.0" ; :Count_Rate_Correction_Hi_N2_Ch = "Non-paralyzable assumption, with tau = 6.25 ns" ; :Count_Rate_Correction_Hi_Elas_Ch = "Non-paralyzable assumption, with tau = 6.25 ns" ; :Count_Rate_Correction_Hi_Depol_Ch = "Non-paralyzable assumption, with tau = 10.00 ns" ; :Overlap_Correction_Hi_Ch_Tag = "19980812" ; :Original_Hi_Calib_Factor = " 1.5160" ; }