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Aircraft Instrument Package for the NOAA/NCAR Lockheed Electra

Parameter	Time Resolution	Method	Det. Limit
Ozone (O3)	10 s	UV Absorption	1 ppb
Fast O3 (FO3)	1 s	NO/O3 Chemiluminescence	0.2 ppb
Fast CO (FCO)	1 s	VUV Resonance Fluorescence	1 ppb
Carbon Dioxide (CO2)	< 1 s	NDIR	0.2 ppm
Sulfur Dioxide (SO2)	2 s	UV Pulsed Fluorescence	1 ppb
Nitric Oxide (NO)	1 s	NO/O3 Chemiluminescence	30 ppt
Nitrogen Dioxide (NO2)	3 s	Photolysis, NO/O3 Chem.	100 ppt
Total Nitrogen Oxides (NOy)	1 s	Au Converter, NO/O3 Chem.	50 ppt
PAN	1 s / every 6 min	Dir. Injection, GC/ECD	< 5 ppt
PPN	1 s / every 6 min	Dir. Injection, GC/ECD	< 5 ppt
MPAN	1 s /every 6 min	Dir. Injection, GC/ECD	< 5 ppt
Nitric Acid (HNO3)	1 s	C I Mass Spectrometry	10 ppt
NH3	5 s	C I Mass Spectrometry	50 ppt
In-situ VOCs	1 min./every 15 min	Cryo Collection, GC/FID	< 10 ppt
Canister VOCs	< 1 min.	Canister Sampling, GC/MS	< 10 ppt
CH2O		Liquid Chromatography
Peroxides (incl. H2O2)	1 min	Dual Enzymatic / Fluorimeter	30 ppt
Aerosol size distribution	1 s	NMASS	5 - 90 nm
Aerosol size distribution	1 s	ERAST	70 - 1000 nm
Total Radiation	1 s	Eppley Pyranometers - Zenith & Nadir	0.28 - 2.8 µ
UV Radiation	~10 s	Spectral Radiometer - Zenith & Nadir	295 - 480 nm
Visible Radiation		Visible Absorption Spectrometer	420 - 700 nm
Water Vapor (H2O)	1 s	Lyman Alpha Absorption
Air Temperature	1 s	Platinum Thermistor
Dewpoint/Frostpoint	< 3 s	Chilled Mirror
Wind Speed	1 s	Derived from INE
Wind Direction	1 s	Derived from INE
Altitude	1 s	Barometric
Position	1 s	GPS, INE
Air Speed	1 s	Barometric
Biometer		3-wavelength IR Absorption
Atmospheric Reflectivity		C & X Band Radars

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