Concept information
Preferred term
PCASP
Definition
- The Passive Cavity Aerosol Spectrometer Probe (PCASP) is an airborne probe, similar in size to the Cloud Particle Probe, Precipitation Probe, and FSSP (see Cloud Physics instrumentation). It is configured in a rugged 17.8 cm (7 inch) cylinder of 0.79 meter (31 inches) in length. A sampling cone extends out from the forward end cap, oriented in the direction of flight. A hollow rake at the rear of the cone creates a venturi that draws a large volume of air flow into the small opening at the tip of the cone during flight. The expanding cone decelerates the input ram air to become iso-kinetic, with the small volume of actual sample air flow drawn straight into the inlet jet. The WMI-PCASP has 15 size channels, and measures particles from 0.10 to 3.00 microns in diameter. Accuracy: ?20% (diameter), ?16% (concentration). The size that is determined by the PCASP assumes that the scattered light detected is from a spherical particle of refractive index 1.58. [Summary provided by Weather Modifications, Inc] (en)
Broader concept
Change note
- 2018-06-08 17:11:40.0 [sritz] Move Concepts delete broader relation (null); add broader relation (PCASP [0ea6e92c-3970-4662-a960-b928fc46ec8b,346311] - TANSO-CAI [e0f71e02-6540-4207-ba18-aacf55057144,348939]);
- 2018-06-08 17:11:59.0 [sritz] Move Concepts delete broader relation (null); add broader relation (PCASP [0ea6e92c-3970-4662-a960-b928fc46ec8b,346311] - Chemical Meters/Analyzers [3d25724b-832f-4a61-b0b2-4f2ccecdba94,346879]);
URI
https://gcmd.earthdata.nasa.gov/kms/concept/0ea6e92c-3970-4662-a960-b928fc46ec8b
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