netcdf pvcsashevislangleyM1.c0.20130620.090602 {
dimensions:
	time = UNLIMITED ; // (1089 currently)
	wavelength = 1315 ;
variables:
	int base_time ;
		base_time:string = "2013-06-20 05:00:00 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 2013-06-20 05:00:00 0:00" ;
	double time(time) ;
		time:long_name = "Time offset from start of solar day" ;
		time:units = "seconds since 2013-06-20 05:00:00 0:00" ;
	float wavelength(wavelength) ;
		wavelength:long_name = "Wavelength" ;
		wavelength:units = "nm" ;
	float solar_zenith_angle(time) ;
		solar_zenith_angle:long_name = "Apparent solar zenith angle" ;
		solar_zenith_angle:units = "deg" ;
		solar_zenith_angle:comment = "Apparent SZA from solar ephemeris with correction for refraction" ;
	float cosine_solar_zenith_angle(time) ;
		cosine_solar_zenith_angle:long_name = "Cosine of apparent solar zenith angle" ;
		cosine_solar_zenith_angle:units = "unitless" ;
		cosine_solar_zenith_angle:comment = "Cosine of apparent SZA from solar ephemeris with correction for refraction" ;
	float cosine_correction(time) ;
		cosine_correction:long_name = "Cosine correction" ;
		cosine_correction:units = "unitless" ;
	float airmass(time) ;
		airmass:long_name = "Optical path length through Earth\'s atmosphere for light from a celestial source" ;
		airmass:units = "unitless" ;
		airmass:equation = "airmass = 1.0 / [ cos(sza) + 0.50572 * (96.07995 - sza)^-1.6364 ]" ;
	byte airmass_mask(time) ;
		airmass_mask:long_name = "Flags indicating the valid airmass values to use after cloud screening" ;
		airmass_mask:units = "unitless" ;
		airmass_mask:flag_values = 0b, 1b ;
		airmass_mask:flag_meanings = "cloud_detected no_cloud_detected" ;
		airmass_mask:flag_0_description = "Cloud detected by cloud screening algorithm." ;
		airmass_mask:flag_1_description = "No cloud detected by cloud screening algorithm." ;
	float earth_sun_distance(time) ;
		earth_sun_distance:long_name = "Earth sun distance" ;
		earth_sun_distance:units = "AU" ;
	float solar_spectrum(wavelength) ;
		solar_spectrum:long_name = "Extraterrestrial solar irradiance outside the Earth\'s atmosphere" ;
		solar_spectrum:units = "W/(m^2 nm)" ;
	float direct_normal_irradiance(time, wavelength) ;
		direct_normal_irradiance:long_name = "Direct normal irradiance, background subtracted and cosine corrected" ;
		direct_normal_irradiance:units = "counts" ;
	byte direct_normal_irradiance_mask(time, wavelength) ;
		direct_normal_irradiance_mask:long_name = "Flags indicating the values used in the langley regression" ;
		direct_normal_irradiance_mask:units = "unitless" ;
		direct_normal_irradiance_mask:flag_values = 0b, 1b ;
		direct_normal_irradiance_mask:flag_meanings = "value_not_used_in_langley_regression value_used_in_langley_regression" ;
		direct_normal_irradiance_mask:flag_0_meaning = "Value not used in the langley regression." ;
		direct_normal_irradiance_mask:flag_1_meaning = "Value used in the langley regression." ;
	float am_Io(wavelength) ;
		am_Io:long_name = "Calculated Io from am langley regression" ;
		am_Io:units = "counts" ;
		am_Io:missing_value = -9999.f ;
	float am_Io_std(wavelength) ;
		am_Io_std:long_name = "Standard deviation of Io from am langley regression" ;
		am_Io_std:units = "counts" ;
		am_Io_std:missing_value = -9999.f ;
	float am_tau(wavelength) ;
		am_tau:long_name = "Calculated tau from am langley regression" ;
		am_tau:units = "unitless" ;
		am_tau:missing_value = -9999.f ;
	float am_tau_std(wavelength) ;
		am_tau_std:long_name = "Standard deviation of tau from am langley regression" ;
		am_tau_std:units = "unitless" ;
		am_tau_std:missing_value = -9999.f ;
	float am_chi2(wavelength) ;
		am_chi2:long_name = "Sum of squared residuals from am langley regression" ;
		am_chi2:units = "unitless" ;
		am_chi2:missing_value = -9999.f ;
	float pm_Io(wavelength) ;
		pm_Io:long_name = "Calculated Io from pm langley regression" ;
		pm_Io:units = "counts" ;
		pm_Io:missing_value = -9999.f ;
	float pm_Io_std(wavelength) ;
		pm_Io_std:long_name = "Standard deviation of Io from pm langley regression" ;
		pm_Io_std:units = "counts" ;
		pm_Io_std:missing_value = -9999.f ;
	float pm_tau(wavelength) ;
		pm_tau:long_name = "Calculated tau from pm langley regression" ;
		pm_tau:units = "unitless" ;
		pm_tau:missing_value = -9999.f ;
	float pm_tau_std(wavelength) ;
		pm_tau_std:long_name = "Standard deviation of tau from pm langley regression" ;
		pm_tau_std:units = "unitless" ;
		pm_tau_std:missing_value = -9999.f ;
	float pm_chi2(wavelength) ;
		pm_chi2:long_name = "Sum of squared residuals from pm langley regression" ;
		pm_chi2:units = "unitless" ;
		pm_chi2:missing_value = -9999.f ;
	float lat ;
		lat:long_name = "North latitude" ;
		lat:units = "degree_N" ;
		lat:valid_min = -90.f ;
		lat:valid_max = 90.f ;
		lat:standard_name = "latitude" ;
	float lon ;
		lon:long_name = "East longitude" ;
		lon:units = "degree_E" ;
		lon:valid_min = -180.f ;
		lon:valid_max = 180.f ;
		lon:standard_name = "longitude" ;
	float alt ;
		alt:long_name = "Altitude above mean sea level" ;
		alt:units = "m" ;
		alt:standard_name = "altitude" ;

// global attributes:
		:command_line = "sashe_langley -s pvc -f M1 -b 20130620" ;
		:process_version = "vap-sashe_langley-1.0-1.el6" ;
		:dod_version = "sashevislangley-c0-1.1" ;
		:input_datastreams = "pvcsashevishisunM1.a0 : 3.2 : 20130620.000000-20130621.000249" ;
		:site_id = "pvc" ;
		:facility_id = "M1: Cape Cod, Massachusetts" ;
		:data_level = "c0" ;
		:datastream = "pvcsashevislangleyM1.c0" ;
		:history = "created by user dsmgr on machine tin at 2013-10-10 18:32:11, using vap-sashe_langley-1.0-1.el6" ;
}