Table 2. Aerosol and Cloud Instrument Payload on Twin Otter During MASE

Parameter	Instrument	Averaging Time	Detection Limit	Size Range Detected
Particle Number Concentration	Condensation Particle Counter (TSI CPC 3010)	1 s	0-10,000 particles cm­3	Dp >10 nm
Particle Number Concentration (Including Ultrafine)	Condensation Particle Counter (TSI CPC 3025)a	1 s	0-100,000 particles cm­3	Dp >3 nm
Aerosol Size Distributions at Dry and Humid Conditions	Scanning differential mobility analyzer (Dual Automated Classified Aerosol Detector, DACAD)	73 s	N/A	10-700 nm
Aerosol Size Distribution	Passive Cavity Aerosol Spectrometer Probe (PCASP)	1 s	N/A	0.1-2.6 mum
Separation of Cloud Droplets From Interstitial Aerosol	Counterflow Virtual Impactor	N/A	N/A	N/A
Cloud Droplet Size Distribution	Phase Doppler Interferometer (PDI)	1 s	N/A	4-200 mum
Cloud and Drizzle Drop Size Distribution	Cloud, Aerosol, and Precipitation Spectrometer (CAPS)b	1 s	N/A	0.4 mum-1.6 mm
Cloud Droplet Size distribution	Forward Scattering Spectrometer Probe (FSSP)	1 s	N/A	1-46 mum
Cloud Droplet Liquid Water Content	Light diffraction (Gerber PVM-100 probe)	1 s	N/A	~5-50 mum
Aerosol Bulk Ionic Composition and Soluble Organic Composition	Particle-into-Liquid Sampler (PILS)	5 min	0.02-0.28 mug m­3 (depending on species)	<1 mum
Aerosol Bulk Composition (Nonrefractory Species)	Aerodyne Time-of-Flight Aerosol Mass Spectrometer (TOF-AMS)	1 s or 15 s	<0.25 mug m­3 (all species)	Dva ~40 nm-1 mum
Soot Absorption	Photoacoustic Absorption Spectrometer (PAS)	1 s	1 Mm­1	10 nm-5 mum
Soot Absorption	Particle Soot Absorption Photometer (PSAP)	1 s or higher	N/A	N/A

aThe ultrafine CPC, referred to UFCPC in the text.
bDrizzle drop size distribution is measured by the cloud imaging probe (CIP) included in the CAPS package.