PHIPS–HALO: the airborne Particle Habit Imaging and Polar Scattering probe – Part 1: Design and operation
The number and shape of ice crystals present in mixed-phase and ice clouds influence the radiation properties, precipitation occurrence and lifetime of these clouds. Since clouds play a major role in the climate system, influencing the energy budget by scattering sunlight and absorbing heat radiatio...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2016-07-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/9/3131/2016/amt-9-3131-2016.pdf |
| _version_ | 1818142753119272960 |
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| author | A. Abdelmonem E. Järvinen D. Duft E. Hirst S. Vogt T. Leisner M. Schnaiter |
| author_facet | A. Abdelmonem E. Järvinen D. Duft E. Hirst S. Vogt T. Leisner M. Schnaiter |
| author_sort | A. Abdelmonem |
| collection | DOAJ |
| description | The number and shape of ice crystals present in mixed-phase and ice clouds influence the radiation properties, precipitation
occurrence and lifetime of these clouds. Since clouds play a major role in
the climate system, influencing the energy budget by scattering sunlight and
absorbing heat radiation from the earth, it is necessary to investigate the
optical and microphysical properties of cloud particles particularly
in situ. The relationship between the microphysics and the single
scattering properties of cloud particles is usually obtained by modelling the
optical scattering properties from in situ measurements of ice crystal size
distributions. The measured size distribution and the assumed particle shape
might be erroneous in case of non-spherical ice particles. There is a
demand to obtain both information correspondently and simultaneously for
individual cloud particles in their natural environment. For evaluating the
average scattering phase function as a function of ice particle habit and
crystal complexity, in situ measurements are required. To this end we have
developed a novel airborne optical sensor (PHIPS-HALO) to measure the optical properties and the corresponding microphysical
parameters of individual cloud particles simultaneously. PHIPS-HALO has been tested in the AIDA cloud simulation chamber and deployed in mountain stations as well as research aircraft (HALO and Polar 6). It is a successive version of the laboratory prototype instrument PHIPS-AIDA. In this paper we present the
detailed design of PHIPS-HALO, including the detection mechanism, optical
design, mechanical construction and aerodynamic characterization. |
| first_indexed | 2024-12-11T11:20:47Z |
| format | Article |
| id | doaj.art-ee1a3ce263234cf49fd288c66b890047 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-11T11:20:47Z |
| publishDate | 2016-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-ee1a3ce263234cf49fd288c66b8900472022-12-22T01:09:11ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482016-07-01973131314410.5194/amt-9-3131-2016PHIPS–HALO: the airborne Particle Habit Imaging and Polar Scattering probe – Part 1: Design and operationA. Abdelmonem0E. Järvinen1D. Duft2E. Hirst3S. Vogt4T. Leisner5M. Schnaiter6Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyCentre for Atmospheric and Instrumentation Research, University of Hertfordshire, Hatfield, AL10 9AB, UKInstitute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute for Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, GermanyThe number and shape of ice crystals present in mixed-phase and ice clouds influence the radiation properties, precipitation occurrence and lifetime of these clouds. Since clouds play a major role in the climate system, influencing the energy budget by scattering sunlight and absorbing heat radiation from the earth, it is necessary to investigate the optical and microphysical properties of cloud particles particularly in situ. The relationship between the microphysics and the single scattering properties of cloud particles is usually obtained by modelling the optical scattering properties from in situ measurements of ice crystal size distributions. The measured size distribution and the assumed particle shape might be erroneous in case of non-spherical ice particles. There is a demand to obtain both information correspondently and simultaneously for individual cloud particles in their natural environment. For evaluating the average scattering phase function as a function of ice particle habit and crystal complexity, in situ measurements are required. To this end we have developed a novel airborne optical sensor (PHIPS-HALO) to measure the optical properties and the corresponding microphysical parameters of individual cloud particles simultaneously. PHIPS-HALO has been tested in the AIDA cloud simulation chamber and deployed in mountain stations as well as research aircraft (HALO and Polar 6). It is a successive version of the laboratory prototype instrument PHIPS-AIDA. In this paper we present the detailed design of PHIPS-HALO, including the detection mechanism, optical design, mechanical construction and aerodynamic characterization.http://www.atmos-meas-tech.net/9/3131/2016/amt-9-3131-2016.pdf |
| spellingShingle | A. Abdelmonem E. Järvinen D. Duft E. Hirst S. Vogt T. Leisner M. Schnaiter PHIPS–HALO: the airborne Particle Habit Imaging and Polar Scattering probe – Part 1: Design and operation Atmospheric Measurement Techniques |
| title | PHIPS–HALO: the airborne Particle Habit Imaging and Polar
Scattering probe – Part 1: Design and operation |
| title_full | PHIPS–HALO: the airborne Particle Habit Imaging and Polar
Scattering probe – Part 1: Design and operation |
| title_fullStr | PHIPS–HALO: the airborne Particle Habit Imaging and Polar
Scattering probe – Part 1: Design and operation |
| title_full_unstemmed | PHIPS–HALO: the airborne Particle Habit Imaging and Polar
Scattering probe – Part 1: Design and operation |
| title_short | PHIPS–HALO: the airborne Particle Habit Imaging and Polar
Scattering probe – Part 1: Design and operation |
| title_sort | phips halo the airborne particle habit imaging and polar scattering probe part 1 design and operation |
| url | http://www.atmos-meas-tech.net/9/3131/2016/amt-9-3131-2016.pdf |
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