The cloud, aerosol and precipitation spectrometer: a new instrument for cloud investigations

By D. Baumgardner, H. Jonsson, W. Dawson, D. O’Connor, R. Newton. 2001

347 citations recorded by the source corpus.

A new airborne particle spectrometer has been developed with the same measurement capabilities of the Forward Scattering Spectrometer Probes (FSSP) models 100 and 300 (FSSP-300 and FSSP-100), two-dimensional optical imaging probe (2D-OAP), the Multiangle Aerosol Spectrometer Probe (MASP) and hot-wire liquid water probe, but with a single integrated system. The cloud, aerosol and precipitation spectrometer (CAPS) measures particles from 0.35 μm to 1.55 mm in diameter and liquid water content (LWC) from 0.01 to 3 g m -3 . In addition to combining five probes into one, it measures airspeed at the sample volume and transmits a data stream that requires no special interfaces to communicate with most computers.

Subfields: Atmospheric Science, Earth-Surface Processes, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/fe9a88ee9aea03da9f8ce280d1d84ba5267bc657

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atmospheric Science

1. R. P. Lawson
2. A. Nenes
3. Andrew J. Heymsfield
4. Paul R. Field
5. M. Krämer
6. Q. Mo
7. B. Baker
8. J. Crosier

In Earth-Surface Processes

1. R. P. Lawson
2. Paul R. Field
3. M. Krämer
4. Andrew J. Heymsfield
5. P. Lawson
6. S. Borrmann
7. G. McFarquhar
8. S. Abel

In Global and Planetary Change

1. R. P. Lawson
2. Andrew J. Heymsfield
3. A. Nenes
4. Paul R. Field
5. M. Krämer
6. J. Crosier
7. Q. Mo
8. B. Baker

Citations in the corpus

• A microphysics guide to cirrus clouds – Part 1: Cirrus types (2015, background): “However, it starts to record ice crystals at larger sizes than the other instruments (15 µm in com- 3Two instruments are integrated in the CAPS (Cloud and Aerosol Particle Spectrometer): (1) CAS (Cloud and Aerosol Spectrometer: 0.6–50 µm) and (2) CIP (Cloud Imaging Probe, CIP:15930 µm), (Baumgardner”
• The 2D-S (Stereo) Probe: Design and Preliminary Tests of a New Airborne, High-Speed, High-Resolution Particle Imaging Probe (2006, background): “ Baumgardner and Korolev (1997) , and more recently Strapp et al. (2001) show that the time response of the 2D-C probe is limited by the time constant of the photodiode array and first-stage amplifier, leading to a significant reduction in sensitivity to particles with sizes 100 ma t airspeeds of 12”
• Observations of ice multiplication in a weakly convective cell embedded in supercooled mid-level stratus (2010, neutral): “(2007), c Baumgardner et al. (2001), and d Lawson et al.”
• Effects of ice particles shattering on the 2D-S probe (2011, methodology): “The cloud imaging probe (CIP), designed and built by Droplet Measuring Technology (DMT) in the late 1990’s (Baumgardner et al., 2001), has 64 photodiodes, 25-µm pixels and is strobed at 8 MHz.”
• Aerosol–cloud drop concentration closure in warm cumulus (2004, positive): “[ 9 ] Droplet concentrations were observed at 1-Hz ( (cid:2) 50 m) resolution using the Cloud and Aerosol Spectrometer (CAS) optical probe on board the Cloud, Aerosol, and Precipitation Spectrometer (CAPS) integrated spectrometer system [ Baumgardner et al. , 2001].”
• Particle sizing calibration with refractive index correction for light scattering optical particle counters and impacts upon PCASP and CDP data collected during the Fennec campaign (2012, background): “10 also shows data from the Cloud Imaging Probe (CIP), which was part of the Cloud, Aerosol and Precipitation Spectrometer (Baumgardner et al., 2001) operated during Fennec.”
• Cloud Ice Properties: In Situ Measurement Challenges (2017, methodology): “The original 2D design has been improved upon with faster electronics and higher resolution (Baumgardner et al. 2001; Lawson et al. 2006) in the CIP and 2D-S, but the detection technique remains the same.”