NAMMA Aerosol Optical Parameter Files 	last revised on 03-28-07  
Version R1
Langley Aerosol Research Group
Bruce Anderson, Gao Chen, Lee Thornhill, and Eddie Winstead
MS 483, NASA Langley Research Center, Hampton VA
Data Contact Person: Lee Thornhill, k.l.thornhill@larc.nasa.gov

Time resolution = 5 seconds

Variables:
0.  Time		seconds		UTC seconds (from ICATS feed)	
1.  Latitude		deg 		from ICATS feed
2.  Longitude		deg 		from ICATS feed
3.  Altitude		ft		from ICATS feed
4.  Ambient Temp	deg C		Static Air Temperature (from ICATS feed)
5.  Ambient Pressure	mb		Static Air Pressure (from ICATS feed)
6.  System Temp		deg C   	System Temperature (from TSI Nephelometer)
7.  System Press	mb		System Pressure (from TSI Nephelometer)
8.  System RH		%		System Relative Humidity (from TSI Nephelometer)
9.  Tot450_scat		Mm-1		Total Aerosol Scattering Coefficient at 450nm from the TSI Nephelometer
10.  Tot550_scat		Mm-1		Total Aerosol Scattering Coefficient at 550nm from the TSI Nephelometer
11. Tot700_scat		Mm-1		Total Aerosol Scattering Coefficient at 700nm from the TSI Nephelometer
12. BS450_scat		Mm-1		Aerosol Back Scattering Coefficient at 450nm from the TSI Nephelometer
13. BS550_scat		Mm-1		Aerosol Back Scattering Coefficient at 550nm from the TSI Nephelometer
14. BS700_scat		Mm-1		Aerosol Back Scattering Coefficient at 700nm from the TSI Nephelometer
15. AE450/550		----		Angstrom Exponent for Scattering (450/550 nm)
16. AE550/700		----		Angstrom Exponent for Scattering (550/700 nm)
17. AE450/700		----		Angstrom Exponent for Scattering (450/700 nm)
18. BS550/Tot550	----		Ratio of Backscatter to Total Aerosol Scattering at 550nm
19. Sub535_scat		Mm-1		Submicron Scattering Coefficient at 535 nm from the Radiance Research Nephelometer
20. Tot470_abs		Mm-1		3-WL Total Aerosol Absorption Coefficient at 470nm (corrected to ambient conditions)
21. Tot532_abs		Mm-1		3-WL Total Aerosol Absorption Coefficient at 532nm (corrected to ambient conditions)
22. Tot660_abs		Mm-1		3-WL Total Aerosol Absorption Coefficient at 660nm (corrected to ambient conditions)
23. Sub470_abs		Mm-1		3-WL Submicron Aerosol Absorption Coefficient at 470nm (corrected to ambient conditions)
24. Sub532_abs		Mm-1		3-WL Submicron Aerosol Absorption Coefficient at 532nm (corrected to ambient conditions)
25. Sub660_abs		Mm-1		3-WL Submicron Aerosol Absorption Coefficient at 660nm (corrected to ambient conditions)
26. AE470/532		----		Angstrom Exponent for Absorption (470/532 nm)
27. AE532/660		----		Angstrom Exponent for Absorption (532/660 nm)
28. AE470/660		----		Angstrom Exponent for Absorption (470/660 nm)
29. BC532		ug/m3		Black Carbon Derived From Absorption Data at 532 nm using 10 m2 g-1
30. SSA470		----		Single Scatter Albedo at 470 nm (total)
31. SSA532		----		Single Scatter Albedo at 532 nm (total)
32. SSA660		----		Single Scatter Albedo at 660 nm (total)
33. SSA532(sub)		----		Single Scatter Albedo at 532 nm (submicron)

Data Flags
-999.0 = Data Missing
-888.0 = Data flagged as questionable or below detection limits

Notes:	
1. The TSI nephelometer data were corrected for truncation errors using the procedure described by Anderson and Ogren
Aerosol Science and Technology, 29, 57-69, 1998.
2. The three-wavelength Particle Soot Absorption Photometer data were corrected for a variety of errors using procedures described 
by Virkkula et al., Aerosol Science and Technology, 39, 68-83, 2005.
3. Black Carbon mass loading values were calculated from 532 nm Absorption Coefficients using a mass absorption efficiency for 
soot of 10 m2/g.
4. All absorption and scattering coefficients are corrected to represent values found at ambient air temperatures and pressures

Updates:
1. Added SSA532(submicron) to the archive (03/28 - LT)