Airborne in-situ characterisation of the microphysical and optical properties of small ice crystals and large hydrometeors (AMOSIL): HALO implementation and analysis methodology
Final Report Abstract
Knowledge or impact gained through the AMOSIL funding includes (a) a successful new holographic instrument (HALOHOLO) that has flown in several field campaigns, and the software to process holograms on supercomputers and software to search through the resulting reconstructed data to get useful science out of the measurements, (b) a unique cloud particle imager/polar nephelometer (PHIPS-HALO) that has been certified and flown on HALO and on several other aircrafts with automated software for the particle image analysis and image-to-scattering function assignment to investigate the fundamental link between the ice particle microphysical and corresponding angular light scattering properties, (c) a SID-3 instrument certified for HALO with automated scattering pattern analysis to gain important information on the structural details of small ice particles that are not accessible by other probes. TV documentary Planet E.: Abenteuer Wolkenforschung, 23 November 2014 on ZDF (http://www.zdf.de/planet-e/projekt-racepac-deutsche-wissenschaftler-erforschen-die-rolle-der-wolken-beim-klimawandel-35926184.html) Deutsche Welle, and Phoenix: English translation of the ZDF Planet E program “Abenteuer Wolkenforschung”, broadcast by DW workldwide several times in 2015.
Publications
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(2011). Design of an in-line, digital holographic imaging system for airborne measurement of clouds. Appl Opt, 50(10), 1405-1412
Spuler, S. M., & Fugal, J.
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(2011). Particle Habit Imaging Using Incoherent Light: A First Step toward a Novel Instrument for Cloud Microphysics. Journal of Atmospheric and Oceanic Technology, 28(4), 493–512
Schön, R., Schnaiter, M., Ulanowski, Z., Schmitt, C., Benz, S., Möhler, O., … Schurath, U.
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(2015). Holographic measurements of inhomogeneous cloud mixing at the centimeter scale. Science, 350(6256), 87-90
Beals, M. J., Fugal, J. P., Shaw, R. A., Lu, J., Spuler, S. M., & Stith, J. L.
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(2015). The origins of ice crystals measured in mixed-phase clouds at the high-alpine site Jungfraujoch. Atmospheric Chemistry and Physics, 15(22), 12953-12969
Lloyd, G., Choularton, T. W., Bower, K. N., Gallagher, M. W., Connolly, P. J., Flynn, M., . . . Henneberger, J.
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(2016). Airborne observations of the microphysical structure of two contrasting cirrus clouds. Journal of Geophysical Research-Atmospheres, 121(22), 13510-13536
O'Shea, S. J., Choularton, T. W., Lloyd, G., Crosier, J., Bower, K. N., Gallagher, M., . . . Pickering, J. C.
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(2016). Cloud chamber experiments on the origin of ice crystal complexity in cirrus clouds. Atmospheric Chemistry and Physics, 16(8), 5091–5110
Schnaiter, M., Järvinen, E., Vochezer, P., Abdelmonem, A., Wagner, R., Jourdan, O., … Heymsfield, A. J.
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(2016). Comparison of measured and computed phase functions of individual tropospheric ice crystals. Journal of Quantitative Spectroscopy and Radiative Transfer, 178, 379–389
Stegmann, P. G., Tropea, C., Järvinen, E., & Schnaiter, M.
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(2016). In situ characterization of mixed phase clouds using the Small Ice Detector and the Particle Phase Discriminator. Atmospheric Measurement Techniques, 9, 159–177
Vochezer, P., Järvinen, E., Wagner, R., Kupiszewski, P., Leisner, T., & Schnaiter, M.
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(2016). Microphysical properties of ice crystal precipitation and surfacegenerated ice crystals in a High Alpine environment in Switzerland. Journal of Applied Meteorology and Climatology
Schlenczek, O., Fugal, J. P., Lloyd, G., Bower, K. N., Choularton, T. W., Flynn, M., . . . Borrmann, S.
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(2016). ML-CIRRUS - The airborne experiment on natural cirrus and contrail cirrus with the high-altitude long-range research aircraft HALO. Bulletin of the American Meteorological Society, BAMS-D-15-00213.1
Voigt, C., Schumann, U., Minikin, A., Abdelmonem, A., Afchine, A., Borrmann, S., … Zöger, M.
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(2016). PHIPS-HALO: The airborne Particle Habit Imaging and Polar Scattering probe-Part 1: Design and operation. Atmospheric Measurement Techniques, 9(7), 3131–3144
Abdelmonem, A., Järvinen, E., Duft, D., Hirst, E., Vogt, S., Leisner, T., & Schnaiter, M.
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(2016). PHIPS-HALO: The airborne Particle Habit Imaging and Polar Scattering probe-Part 1: Design and operation. Atmospheric Measurement Techniques, 9(7), 3131–3144
Abdelmonem, A., Järvinen, E., Duft, D., Hirst, E., Vogt, S., Leisner, T., & Schnaiter, M.
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(2016). Quasi-Spherical Ice in Convective Clouds. Journal of the Atmospheric Sciences, 73(10), 3885–3910
Järvinen, E., Schnaiter, M., Mioche, G., Jourdan, O., Shcherbakov, V. N., Costa, A., … Leisner, T.
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(2016). The ACRIDICON-CHUVA campaign: Studying tropical deep convective clouds and precipitation over Amazonia using the new German research aircraft HALO. Bulletin of the American Meteorological Society, (September), 160128144638003
Wendisch, M., Pöschl, U., Andreae, M. O., Machado, L. A. T., Albrecht, R., Schlager, H., … Zöger, M.
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PHIPS-HALO: the airborne Particle Habit Imaging and Polar Scattering probe – Part 2: Characterization and first results, Atmos. Meas. Tech. Discuss., 2017, 1–33
Schnaiter, M., Järvinen, E., Abdelmonem, A. and Leisner, T.
