netcdf hfepblhtsonde1mcfarlM1.s1.20081228.172900 {
dimensions:
	time = UNLIMITED ; // (2486 currently)
	height_ss = 198 ;
	layer = 5 ;
variables:
	int base_time ;
		base_time:string = "2008-12-28 00:00:00 0:00" ;
		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 2008-12-28 00:00:00 0:00" ;
		time_offset:ancillary_variables = "base_time" ;
	double time(time) ;
		time:long_name = "Time offset from midnight" ;
		time:units = "seconds since 2008-12-28 00:00:00 0:00" ;
	float height_ss(height_ss) ;
		height_ss:long_name = "Height above mean sea level subsampled at 5 mb resolution" ;
		height_ss:units = "m" ;
		height_ss:valid_min = 0.f ;
		height_ss:valid_max = 40000.f ;
	int layer(layer) ;
		layer:long_name = "Inversion layer number for Heffter (1980) method" ;
		layer:units = "unitless" ;
	float atm_pres(time) ;
		atm_pres:long_name = "Atmospheric pressure" ;
		atm_pres:units = "hPa" ;
		atm_pres:valid_min = 0.f ;
		atm_pres:valid_max = 1100.f ;
		atm_pres:missing_value = -9999.f ;
	float air_temp(time) ;
		air_temp:long_name = "Dry bulb ambient air temperature" ;
		air_temp:units = "degC" ;
		air_temp:valid_min = -90.f ;
		air_temp:valid_max = 50.f ;
		air_temp:missing_value = -9999.f ;
	float wspd(time) ;
		wspd:long_name = "Wind speed" ;
		wspd:units = "m/s" ;
		wspd:standard_name = "wind_speed" ;
		wspd:valid_min = 0.f ;
		wspd:valid_max = 100.f ;
		wspd:missing_value = -9999.f ;
		wspd:comment = "Wind speed values greater than 33.5 m/s below 50 m are set to missing value" ;
	float rh(time) ;
		rh:long_name = "Relative humidity" ;
		rh:units = "%" ;
		rh:standard_name = "relative_humidity" ;
		rh:valid_min = 0.f ;
		rh:valid_max = 100.f ;
		rh:resolution = 1.f ;
		rh:missing_value = -9999.f ;
	float pbl_height_heffter ;
		pbl_height_heffter:long_name = "Planetary boundary layer height above mean sea level calculated using the Heffter (1980) method" ;
		pbl_height_heffter:units = "m" ;
		pbl_height_heffter:standard_name = "atmosphere_boundary_layer_thickness" ;
		pbl_height_heffter:valid_min = 21.f ;
		pbl_height_heffter:valid_max = 4021.f ;
		pbl_height_heffter:missing_value = -9999.f ;
		pbl_height_heffter:ancillary_variables = "qc_pbl_height_heffter" ;
		pbl_height_heffter:comment = "valid_min is site elevation; valid_max is site elevation plus 4000 m" ;
	int qc_pbl_height_heffter ;
		qc_pbl_height_heffter:long_name = "Quality check results on field: Planetary boundary layer height above mean sea level calculated using the Heffter (1980) method" ;
		qc_pbl_height_heffter:units = "unitless" ;
		qc_pbl_height_heffter:flag_method = "bit" ;
		qc_pbl_height_heffter:description = "This field contains qc values which should be interpreted as listed:\n",
			"0 = Good: Data exists and passed all qc tests.\n",
			"1 = Indeterminate: Data may be bad, further analysis recommended.\n",
			"2 = Bad: Data has a bad value.\n",
			"3 = Missing: Data is missing." ;
	int pbl_regime_type_liu_liang ;
		pbl_regime_type_liu_liang:long_name = "Planetary boundary layer regime type determined by Liu and Liang (2010) method" ;
		pbl_regime_type_liu_liang:units = "unitless" ;
		pbl_regime_type_liu_liang:missing_value = -9999 ;
		pbl_regime_type_liu_liang:flag_values = "0, 1, 2" ;
		pbl_regime_type_liu_liang:flag_meanings = "neutral_boundary_layer stable_boundary_layer convective_boundary_layer" ;
		pbl_regime_type_liu_liang:flag_0_description = "Neutral boundary layer" ;
		pbl_regime_type_liu_liang:flag_1_description = "Stable boundary layer" ;
		pbl_regime_type_liu_liang:flag_2_description = "Convective boundary layer" ;
	int qc_pbl_regime_type_liu_liang ;
		qc_pbl_regime_type_liu_liang:long_name = "Quality check results on field: Planetary boundary layer regime type determined by Liu and Liang (2010) method" ;
		qc_pbl_regime_type_liu_liang:units = "unitless" ;
		qc_pbl_regime_type_liu_liang:flag_method = "bit" ;
		qc_pbl_regime_type_liu_liang:description = "This field contains qc values which should be interpreted as listed:\n",
			"0 = Good: Data exists and passed all qc tests.\n",
			"1 = Indeterminate: Data may be bad, further analysis recommended.\n",
			"2 = Bad: Data has a bad value.\n",
			"3 = Missing: Data is missing." ;
	float pbl_height_liu_liang ;
		pbl_height_liu_liang:long_name = "Planetary boundary layer height above mean sea level calculated by Liu and Liang (2010) method" ;
		pbl_height_liu_liang:units = "m" ;
		pbl_height_liu_liang:standard_name = "atmosphere_boundary_layer_thickness" ;
		pbl_height_liu_liang:valid_min = 21.f ;
		pbl_height_liu_liang:valid_max = 4021.f ;
		pbl_height_liu_liang:missing_value = -9999.f ;
		pbl_height_liu_liang:ancillary_variables = "qc_pbl_height_liu_liang pbl_regime_type_liu_liang" ;
		pbl_height_liu_liang:comment = "valid_min is site elevation; valid_max is site elevation plus 4000 m" ;
	int qc_pbl_height_liu_liang ;
		qc_pbl_height_liu_liang:long_name = "Quality check results on field: Planetary boundary layer height above mean sea level calculated by Liu and Liang (2010) method" ;
		qc_pbl_height_liu_liang:units = "unitless" ;
		qc_pbl_height_liu_liang:flag_method = "bit" ;
		qc_pbl_height_liu_liang:description = "This field contains qc values which should be interpreted as listed:\n",
			"0 = Good: Data exists and passed all qc tests.\n",
			"1 = Indeterminate: Data may be bad, further analysis recommended.\n",
			"2 = Bad: Data has a bad value.\n",
			"3 = Missing: Data is missing." ;
	float pbl_height_bulk_richardson_pt25 ;
		pbl_height_bulk_richardson_pt25:long_name = "Planetary boundary layer height above mean sea level calculated from bulk Richardson number using critical threshold of 0.25" ;
		pbl_height_bulk_richardson_pt25:units = "m" ;
		pbl_height_bulk_richardson_pt25:standard_name = "atmosphere_boundary_layer_thickness" ;
		pbl_height_bulk_richardson_pt25:valid_min = 21.f ;
		pbl_height_bulk_richardson_pt25:valid_max = 4021.f ;
		pbl_height_bulk_richardson_pt25:missing_value = -9999.f ;
		pbl_height_bulk_richardson_pt25:ancillary_variables = "qc_pbl_height_bulk_richardson_pt25" ;
		pbl_height_bulk_richardson_pt25:comment = "valid_min is site elevation; valid_max is site elevation plus 4000 m" ;
	int qc_pbl_height_bulk_richardson_pt25 ;
		qc_pbl_height_bulk_richardson_pt25:long_name = "Quality check results on field: Planetary boundary layer height above mean sea level calculated from bulk Richardson number using critical threshold of 0.25" ;
		qc_pbl_height_bulk_richardson_pt25:units = "unitless" ;
		qc_pbl_height_bulk_richardson_pt25:flag_method = "bit" ;
		qc_pbl_height_bulk_richardson_pt25:description = "This field contains qc values which should be interpreted as listed:\n",
			"0 = Good: Data exists and passed all qc tests.\n",
			"1 = Indeterminate: Data may be bad, further analysis recommended.\n",
			"2 = Bad: Data has a bad value.\n",
			"3 = Missing: Data is missing." ;
	float pbl_height_bulk_richardson_pt5 ;
		pbl_height_bulk_richardson_pt5:long_name = "Planetary boundary layer height above mean sea level calculated from bulk Richardson number using critical threshold of 0.5" ;
		pbl_height_bulk_richardson_pt5:units = "m" ;
		pbl_height_bulk_richardson_pt5:standard_name = "atmosphere_boundary_layer_thickness" ;
		pbl_height_bulk_richardson_pt5:valid_min = 21.f ;
		pbl_height_bulk_richardson_pt5:valid_max = 4021.f ;
		pbl_height_bulk_richardson_pt5:missing_value = -9999.f ;
		pbl_height_bulk_richardson_pt5:ancillary_variables = "qc_pbl_height_bulk_richardson_pt5" ;
		pbl_height_bulk_richardson_pt5:comment = "valid_min is site elevation; valid_max is site elevation plus 4000 m" ;
	int qc_pbl_height_bulk_richardson_pt5 ;
		qc_pbl_height_bulk_richardson_pt5:long_name = "Quality check results on field: Planetary boundary layer height above mean sea level calculated from bulk Richardson number using critical threshold of 0.5" ;
		qc_pbl_height_bulk_richardson_pt5:units = "unitless" ;
		qc_pbl_height_bulk_richardson_pt5:flag_method = "bit" ;
		qc_pbl_height_bulk_richardson_pt5:description = "This field contains qc values which should be interpreted as listed:\n",
			"0 = Good: Data exists and passed all qc tests.\n",
			"1 = Indeterminate: Data may be bad, further analysis recommended.\n",
			"2 = Bad: Data has a bad value.\n",
			"3 = Missing: Data is missing." ;
	float lat ;
		lat:long_name = "North latitude" ;
		lat:units = "degree_N" ;
		lat:valid_min = -90.f ;
		lat:valid_max = 90.f ;
	float lon ;
		lon:long_name = "East longitude" ;
		lon:units = "degree_E" ;
		lon:valid_min = -180.f ;
		lon:valid_max = 180.f ;
	float alt ;
		alt:long_name = "Altitude above mean sea level" ;
		alt:units = "m" ;

// global attributes:
		:command_line = "idl -D 0 -R -n pblhtsonde -s hfe -f M1 -b 20080503 -e 20090109" ;
		:process_version = "vap-pblhtsonde-0.5-0.el5" ;
		:dod_version = "pblhtsonde1mcfarl-c1-2.0" ;
		:site_id = "hfe" ;
		:platform_id = "pblhtsonde1mcfarl" ;
		:facility_id = "M1: Shouxian, China" ;
		:data_level = "s1" ;
		:datastream = "hfepblhtsonde1mcfarlM1.c1" ;
		:inversion_strength_threshold = "1" ;
		:instability_threshold = "0.5" ;
		:overshoot_threshold = "4" ;
		:reference_1 = "Heffter, J. L., 1980: Transport layer depth calculations. Second Joint Conference on Applications of Air Pollution Meteorology, New Orleans, LA (1980)." ;
		:reference_2 = "Liu, S. and X. Z. Liang, 2010: Observed Diurnal Cycle Climatology of Planetary Boundary Layer Height. J. Climate, 23, 5790-5807." ;
		:input_datastreams = "hfesondewnpnM1.b1 : 8.1 : 20081228.052500-20081228.172900\n",
			"" ;
		:input_datastreams_description = "A string consisting of the datastream(s), datastream version(s), and datastream date (range)." ;
		:history = "created by user sivaraman on machine mercury at 20-Aug-2013,19:55:01" ;
}