netcdf twpmplnor1campC2.c1.19991118.220022 {
dimensions:
	time = UNLIMITED ; // (116 currently)
	height = 446 ;
	nlayers = 5 ;
variables:
	int base_time ;
		base_time:string = "18-Nov-1999,22:00:22 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 1999-11-18 22:00:22 0:00" ;
	float height(height) ;
		height:long_name = "Vertical height above ground level of the center of corresponding range_bin" ;
		height:units = "km AGL" ;
	float backscatter(time, height) ;
		backscatter:long_name = "Normalized corrected relative backscatter" ;
		backscatter:units = "Phe counts * km^2 / (us * mJ)" ;
		backscatter:comment = "System dead-time corrected, background subtracted, range, overlap, and afterpulsing corrected, and normalized to the energy level" ;
		backscatter:calculation = "new_signal = ((old_signal - background - afterpulse) * range^2) / (overlap * energy)" ;
		backscatter:Data_quality_comment = "Afterpulse and overlap corrections have been approximated - aerosol analysis suspect" ;
	float background_signal(time) ;
		background_signal:long_name = "Background signal" ;
		background_signal:units = "Phe counts / us" ;
		background_signal:comment = "Derived from the dead-time corrected signal between 44.500 and 55.000 km" ;
	float cloud_base_height(time, nlayers) ;
		cloud_base_height:long_name = "Cloud base height" ;
		cloud_base_height:units = "kilometers AGL" ;
		cloud_base_height:explanation_of_0 = "Value of 0.0 indicates beam is not blocked and no cloud detected" ;
		cloud_base_height:explanation_of_60 = "Value of 60.0 indicates a beam-blocked condition, or that the beam is severely attenuated" ;
		cloud_base_height:min_cloud_detection_height = " 0.300 km AGL" ;
		cloud_base_height:max_cloud_detection_height = "18.900 km AGL" ;
	float cloud_top_height(time, nlayers) ;
		cloud_top_height:long_name = "Cloud top height" ;
		cloud_top_height:units = "km AGL" ;
		cloud_top_height:comment = "Valid min, valid max, and accuracy are the same as for cloud_base_height" ;
	float cloud_top_attenuation_flag(time, nlayers) ;
		cloud_top_attenuation_flag:long_name = "Flag indicating whether the beam was extinguished at indicated cloud top" ;
		cloud_top_attenuation_flag:units = "unitless" ;
		cloud_top_attenuation_flag:explanation_of_0 = "Indicates that the beam was not extinguished by the layer" ;
		cloud_top_attenuation_flag:explanation_of_1 = "Indicates that the beam was totally extinguished by the layer" ;
		cloud_top_attenuation_flag:explanation_of_2 = "Indicates that the beam was blocked, or severely attenuated, in the first bin" ;
	short cloud_mask_1(time, height) ;
		cloud_mask_1:long_name = "Cloud mask" ;
		cloud_mask_1:units = "unitless" ;
		cloud_mask_1:comment = "Derived from the cloud_base_height, cloud_top_height, and cloud_top_attenuation_flag fields" ;
		cloud_mask_1:averaging_comment = "Mask does not have spatial or temporal averaging" ;
		cloud_mask_1:explanation_of_0 = "No significant return" ;
		cloud_mask_1:explanation_of_1 = "Significant return" ;
		cloud_mask_1:explanation_of_2 = "Beam appears attenuated" ;
		cloud_mask_1:min_cloud_detection_height = " 0.300 km AGL" ;
		cloud_mask_1:max_cloud_detection_height = "18.900 km AGL" ;
	short cloud_mask_2(time, height) ;
		cloud_mask_2:long_name = "Cloud mask" ;
		cloud_mask_2:units = "unitless" ;
		cloud_mask_2:comment = "Derived from cloud_mask_1 field" ;
		cloud_mask_2:averaging_comment = "Mask contains spatial and temporal averaging assuming clouds persist both in time and height.  This assumption is used to eliminate false positives" ;
		cloud_mask_2:explanation_of_0 = "No significant return" ;
		cloud_mask_2:explanation_of_1 = "Significant return" ;
		cloud_mask_2:explanation_of_2 = "Beam appears attenuated" ;
	float random_error(time, height) ;
		random_error:long_name = "Relative random error in backscatter profiles" ;
		random_error:units = "Fraction" ;
		random_error:comment1 = "Calculated from shot-noise statistics" ;
		random_error:comment2 = "If the signal (backscatter - background) is less than 0.000500, then the error value is set to 555.000000" ;
	double baseline_update_time(time) ;
		baseline_update_time:long_name = "The update time of the historical baseline used for the cloud boundary determination of this sample" ;
		baseline_update_time:units = "yymmdd.hhmmss" ;
	float shots_summed(time) ;
		shots_summed:long_name = "Number of laser pulses summed during measurement interval" ;
		shots_summed:units = "Unitless" ;
	float pulse_rep(time) ;
		pulse_rep:long_name = "Repetition rate, or Trigger Frequency of the laser" ;
		pulse_rep:units = "Hertz" ;
	float energy_monitor(time) ;
		energy_monitor:long_name = "Energy output per pulse of transmitted laser beam at 523 nm (Doubled Nd-YLF)" ;
		energy_monitor:units = "microjoules per pulse" ;
	float detector_temp(time) ;
		detector_temp:long_name = "Detector temperature" ;
		detector_temp:units = "Celsius" ;
	float instrument_temp(time) ;
		instrument_temp:long_name = "Instrument temperature" ;
		instrument_temp:units = "Celsius" ;
	float laser_temp(time) ;
		laser_temp:long_name = "Laser temperature" ;
		laser_temp:units = "Celsius" ;
	float lat ;
		lat:long_name = "north latitude" ;
		lat:units = "degrees" ;
		lat:valid_range = -90.f, 90.f ;
	float lon ;
		lon:long_name = "east longitude" ;
		lon:units = "degrees" ;
		lon:valid_range = -180.f, 180.f ;
	float alt ;
		alt:long_name = "altitude" ;
		alt:units = "meters above Mean Sea Level" ;

// global attributes:
		:Date = "Thu Aug 10 01:10:31 2000" ;
		:Version = "Release_2_2" ;
		:Command_Line = "mplnor -d 19991118 -f twpC2" ;
		:Input_Platforms = "twpmplC2.a1" ;
		:BW_Version = "Release_3_3" ;
		:Comment = "Pass-through VAP to improve the data quality" ;
		:Backscatter_data_quality_comment = "Afterpulse and overlap corrections have been approximated - aerosol analysis suspect" ;
		:Height_uncertainty = "Due to uncertainty in the timing of the laser pulse with respect to the data acquisition, the ground bin might be displaced +/- one bin" ;
		:Cloud_detection_algorithm = "High-resolution algorithm V2" ;
		:Min_cloud_detection_height = " 0.300 km AGL" ;
		:Max_cloud_detection_height = "18.900 km AGL" ;
		:Serial_number = "009" ;
		:Deadtime_correction = "Applied for Detector #3929b - Calculated by DMP and DDT" ;
		:Overlap_correction = "Applied - Calculated by DMP" ;
		:Afterpulse_correction = "Applied - Calculated by DMP" ;
		:NASA_GSFC_MPL_Help = "http://virl.gsfc.nasa.gov" ;
		:missing_value = "-9999.0" ;
		:Number_Input_Platforms = "1" ;
		:Input_Platforms_Versions = "3.0.10" ;
		:zeb_platform = "twpmplnor1campC2.c1" ;
		:history = "created by the Zebra DataStore library, 10-Aug-2000,1:11:21, $RCSfile: DFA_NetCDF.c,v $ $Revision: 3.52 $\n",
			";\n",
			"Modified by user sri on machine copper at 2014-08-02 21:00:45, using $Id: idl_la.pro 55839 2014-08-02 20:59:59Z sri $" ;
}