Aerosol Properties & Processes: Instruments

Optical

InstrumentMethodContacts
AOPAerosol Optical Properties measures aerosol extinction and absorption at multiple wavelengths across the visible spectrum; designed for deployment aboard NASA DC-8 and NOAA WP-3D Nick Wagner AOP suite
LiNephLaser Imaging Nephelometer measures the scattering of light at 660 nm and 405 nm as a function of angle and linear polarization; designed for deployment aboard NASA DC-8 Adam Ahern opCRD
miniSASPminiature scanning aerosol sun photometer measures the radiant flux density at three wavelengths through a layer of atmospheric particles; determines how sunlight in the layer is scattered and absorbed More Info Dan Murphy miniSASP

miniature upward-looking radiometer (ULR) for balloons and UAVs

opCRDcavity ringdown spectroscopy measures aerosol extinction under ambient conditions in an open-path cavity at 670nm; designed for ground sampling Dan Murphy, Nick Wagner opCRD
SOAPSpectrometers for Optical Aerosol Properties measures dry aerosol absoroption, extinction and single scatter albedo at 532nm; designed to operate remote and unatteded for several weeks Nick Wagner SOAP

Chemical

InstrumentMethodContacts
AMSaerosol mass spectrometer samples and volatilizes aerosol particles; evolved gases are ionized and measured with a compact time-of-flight mass spectrometer for composition Ann Middlebrook AMS installed on the P3
PALMSparticle analysis by laser mass spectroscopy single particles are vaporized and ionized by a UV laser; composition is determined by a time-of-flight mass spectrometer Dan Murphy, Karl Froyd PALMS in the lab
PiLSparticle-into-liquid sampler dissolves small aerosol particles into liquids for later chemical composition analysis Ann Middlebrook PiLS in the rack on the P3

Size Distribution: Aerosol Microphysical Properties (AMP)

InstrumentMethodContacts
NMASSnucleation-mode aerosol size spectrometerfive condensation particle counters in parallel estimate particle size distributions from 0.004-0.05 µm diameterChuck BrockNMASS in the lab
UHSASultra-high sensitivity aerosol spectrometerlaser light scattered from single particles is used to determine their size and concentration in the 0.07-1.0 µm diameter rangeChuck BrockUHSAS in the lab
CDACloud Droplet AnalyzerLED light scattered from single particles is used to determine their size and concentration in the 0.6-40 µm diameter range; high flow rate and large optical volume optimized for low particle concentrations; intended for deployment aboard NOAA WP-3D and NASA WB-57 Chuck Brock, Adam Ahern

Size Distribution

InstrumentMethodContacts
SMPSscanning mobility size spectrometerparticles are charged, segregated in an electric field, and counted to determine the size distribution from 0.02-0.7 µm diameterChuck Brock
WLOPCwhite-light optical particle counterLED light scattered from single particles is used to determine their size and concentration in the 0.5-8.5 µm diameter rangeChuck Brock, Adam Ahern

Aerosol physics

InstrumentMethodContacts
PCVIpumped counterflow virtual impactor inertially separates large particles or ice crystals into a dry or inert gas Dan Murphy

Additional Instruments

InstrumentMethodContacts
ASTERaerosol scattering-to-extinction ratio measures scattering and extinction of individual aerosol particles in a ring laser cavity Dan Murphy
CAScloud and aerosol spectrometerforward scattered laser light from aerosol particles and cloud droplets is used to size and count them; 0.05-50 µmChuck BrockCAS instrument in the lab
CCPCloud Combination Probe: cloud imaging and cloud droplet probelaser shadow images of cloud-sized particles are used to determine size, concentration, and shape; 25-1550 µm;
forward scattered laser light from cloud droplets is used to size and count them; 3.0-50 µm
Chuck Brockcloud combination probe in the lab
PIPprecipitation imaging probelaser shadow images of precipitation-sized particles are used to determine size, concentration, and shape; 100-6200 µmChuck BrockPIP installed on the P3