ATR-42
ATR-42

This data will be added in future versions.

This data will be added in future versions

The Community Aerosol Inlet (CAI) is used to sample aerosols. It flies aboard an aircraft and takes measurements during the flight. CAI instruments are operated by both the National Center for Atmospheric Research (NCAR) and the National Centre for Meteorological Research (CNRM) in France.

a miniature, lightweight, low-power cloud particle spectrometer that measures droplets in the range of 2-50 µm in concentrations as high as 2000 particles/cm3

Condensation Particle Counters (CPCs) are in situ sensors that measure aerosol particle concentration. CPCs measure aerosol concentration by condensing fluid onto the particles, allowing them to grow to more detectable sizes for optical scattering. Typically, CPCs can detect particles with a size range of 7 nm-3 μm, can measure particle concentrations up to 100,000 particles/cc, and can provide measurements at 1-second intervals. CPCs are manufactured by TSI Incorporated and can be deployed on airborne, shipborne, and ground-based platforms.

The Scanning Mobility Particle Sizer (SMPS) is an in situ airborne or ground-based aerosol sensor manufactured by TSI Incorporated. SMPS uses a differential mobility analyzer (DMA) to measure the electrical mobility diameter of aerosol particles to determine the size distribution. It also measures the number of aerosol particles by using a condensation particle counter (CNC). It can detect particles within the size range of 10-1000 nm and can provide measurements typically around 10 seconds per scan.

The Lidar pour l’Etude des interactions Ae´rosols Nuages Dynamique Rayonnement et du cycle de l’Eau, or LEANDRE II, is a DIAL airborne system that measures water vapor and water vapor mixing ratios in the lower troposphere. It was developed at the Service d’Ae´ronomie in Paris.

The Aerosol Mass Spectrometer (AMS) is a spectrometer that measures the chemical composition and properties of sub-micron aerosol particles. AMS has a maximum data collection of 100 Hz and can detect particles with a size range of 40 nm to 1 micron. It operates by switching between mass spectrum (MS) mode and particle time-of-flight (PToF) mode to determine the chemical makeup of aerosol samples. The AMS can be deployed on aircraft, ships, mobile laboratories, or placed directly at a field site.

The Optical Particle Counter is an instrument based on the principle of light scattering from particles. It is a real time instrument that is typically used to measure particles above 0.05 μm in diameter.

The Passive-Cavity Aerosol Spectrometer Probe (PCASP) is an in situ airborne optical spectrometer manufactured by Droplet Measurement Technologies. It measures the light scattered by particles to determine the aerosol size distribution and concentration in the 0.1 to 3.0 μm size range. PCASP operates at the 632 nm wavelength and has a typical sampling rate of 10 Hz.

The PVM-100 instrument developed by Gerber Scientific conducts particulate volume measurements using a forward-scattering laser spectrometer. A laser is used to measure the forward light scattering within a 3 cubic centimeter volume, and a liquid water content is inferred from the calculated scattering flux of the volume. Droplets in the 3-50 µm Diameter range can be detected with the instrument, and measurements can be taken up to 200 times a second.

The Fast Mobility Particle Sizer (FMPS) spectrometer can measure particle size distributions in the 5.6 to 560 nm range with 32 channels of resolution. By using multiple, low noise electrometers, it can generate a distribution with a frequency as high as every second; making the FMPS a valuable instrument in situations where the aerosol content is rapidly changing. The FMPS designed by TSI Incorporated was designed to be easily transportable and can be configured to collect data continuously for up to 12 hours.

The Condensation Nuclei Counter (CNC) is optical method for counting atmospheric aerosol particles.

The Forward Scattering Spectrometer Probe (FSSP) is an in situ airborne optical particle counter originally designed by Particle Measuring Systems, Inc. It provides particle size distribution by measuring the intensity of the light scattered by individual particles within the cloud. FSSP can detect particles within a diameter range of 0.5 to 47 μm. It operates at a wavelength of 633 nm and has a typical sampling frequency of 1 Hz.

The Cloud Imaging Probe (CIP) is an in situ airborne optical array probe manufactured by Droplet Measurement Technologies. CIP records cloud particle images by capturing the shadow of the particles as they pass through the laser. It also provides information on the particle size distribution and cloud liquid water content. CIP has a typical resolution of 25 μm and can measure particles in the size range of 12.5 μm - 1.55 mm.

The Particle Soot Absorption Photometer (PSAP) is an in situ airborne photometer manufactured by Radiance Research. It uses Beer's Law to measure the change in light transmission of aerosol particles. These measurements can be used to derive aerosol absorption and extinction. PSAP operates across three wavelengths (467, 530, and 660 nm) and has a temporal resolution of 1 second. It is typically deployed on aircraft, but it can be deployed on other platforms such as ships and vehicles.