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Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Photon/Optical Detectors > PI-NEPH

Preferred term

PI-NEPH  

Definition

  • The Polarized Imaging Nephelometer (PI-Neph) is a novel in-situ instrument developed for accurate measurements of the first two matrix elements of the scattering phase function of aerosol particles. The instrument takes in aerosol through an inlet and bombards the sample with a polarized laser beam, at 445, 532, or 661nm, inside a closed chamber. The laser beam is split into forward and backward segments by a retroreflector; a wide field-of-view camera inside the chamber images the intensity of scattered light from 5-175 degrees in scattering angle. The high-resolution phase function measurement from the PI-Neph is used to retrieve aerosol microphysical properties including refractive index, size distributions, sphericity, asymmetry parameter, and single-scattering albedo akin to multi-angle remote sensors. (en)

Broader concept

Change note

  • 2021-03-01 16:07:02.0 [sritz] Insert Concept add broader relation (PI-NEPH [77bb89d9-23a6-47dd-a366-0cd32b00c52e,560894] - Photon/Optical Detectors [72227178-bb4c-4ff5-98a3-f976aa3f3714,544545]);
  • 2021-03-01 16:07:55.0 [sritz] insert AltLabel (id: null category: primary text: Polarized Imaging Nephelometer language code: en);
  • 2021-03-01 16:08:39.0 [sritz] insert Definition (id: null text: The Polarized Imaging Nephelometer (PI-Neph) is a novel in-situ instrument developed for accurate measurements of the first two matrix elements of the scattering phase function of aerosol particles. The instrument takes in aerosol through an inlet and bombards the sample with a polarized laser beam, at 445, 532, or 661nm, inside a closed chamber. The laser beam is split into forward and backward segments by a retroreflector; a wide field-of-view camera inside the chamber images the intensity of scattered light from 5-175 degrees in scattering angle. The high-resolution phase function measurement from the PI-Neph is used to retrieve aerosol microphysical properties including refractive index, size distributions, sphericity, asymmetry parameter, and single-scattering albedo akin to multi-angle remote sensors. language code: en);
  • 2021-03-01 16:12:53.0 [sritz] insert WeightedRelation (id: null related concept uuid: 3f85676a-11a0-460b-a25a-a9bb9118a6c4 relationship type: null relationship value: null generated by: null); insert WeightedRelation (id: null related concept uuid: 50e316c6-41f6-444d-834e-fdfa6fbc80e2 relationship type: null relationship value: null generated by: null); insert WeightedRelation (id: null related concept uuid: eb80f2b1-4c2f-4cbb-8cb2-40a7613edff3 relationship type: null relationship value: null generated by: null); insert WeightedRelation (id: null related concept uuid: d6aa2406-0323-43c1-b890-3509ee22784e relationship type: null relationship value: null generated by: null);
  • 2021-03-01 16:15:34.0 [sritz] insert WeightedRelation (id: null related concept uuid: a930c78a-6ed3-4a49-ad2d-bd2c5c36d291 relationship type: null relationship value: null generated by: null);
  • 2021-03-01 16:16:09.0 [sritz] update WeightedRelation (Platform-Instrument); update WeightedRelation (1.0);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/77bb89d9-23a6-47dd-a366-0cd32b00c52e

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