Articles | Volume 14, issue 3
https://doi.org/10.5194/amt-14-2477-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-14-2477-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Photoacoustic hygrometer for icing wind tunnel water content measurement: design, analysis, and intercomparison
Graz University of Technology, Institute of Electrical Measurement and Sensor Systems, Graz, Austria
FH JOANNEUM GmbH, Institute of Aviation, Graz, Austria
AVL List GmbH, Nanophysics & Sensor Technologies, Graz, Austria
Wolfgang Breitfuss
RTA Rail Tec Arsenal Fahrzeugversuchsanlage GmbH, Vienna, Austria
Simon Schweighart
FH JOANNEUM GmbH, Institute of Aviation, Graz, Austria
Philipp Breitegger
Graz University of Technology, Institute of Electrical Measurement and Sensor Systems, Graz, Austria
Hugo Pervier
Cranfield University, School of Aerospace, Transport and Manufacturing, Cranfield, United Kingdom
Andreas Tramposch
FH JOANNEUM GmbH, Institute of Aviation, Graz, Austria
Andreas Klug
AVL List GmbH, Nanophysics & Sensor Technologies, Graz, Austria
Wolfgang Hassler
FH JOANNEUM GmbH, Institute of Aviation, Graz, Austria
Alexander Bergmann
Graz University of Technology, Institute of Electrical Measurement and Sensor Systems, Graz, Austria
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Markus Knoll, Martin Penz, Hannes Juchem, Christina Schmidt, Denis Pöhler, and Alexander Bergmann
Atmos. Meas. Tech., 17, 2481–2505, https://doi.org/10.5194/amt-17-2481-2024, https://doi.org/10.5194/amt-17-2481-2024, 2024
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Exhaust emissions from combustion-based vehicles are negatively affecting human health and our environment. In particular, a small share (< 20 %) of poorly maintained or tampered vehicles are responsible for the majority (60 %–90 %) of traffic-related emissions. The emissions from vehicles are currently not properly monitored during their lifetime. We present a roadside measurement technique, called
point sampling, which can be used to monitor vehicle emissions throughout their life cycle.
Alexander Schossmann, Michael Töfferl, Christoph Schmidt, and Alexander Bergmann
J. Sens. Sens. Syst., 13, 31–39, https://doi.org/10.5194/jsss-13-31-2024, https://doi.org/10.5194/jsss-13-31-2024, 2024
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We present a concept for angle and position measurement based on metamaterials. The distance between the sensor and the rotating or moving metamaterial target is not limited to a precise value. We use state-of-the-art millimeter wave radar chip technology for read-out, initially intended for applications such as gesture recognition or contactless switches. We implement a demonstrator test setup and show the proof of principle.
Johannes Lucke, Tina Jurkat-Witschas, Romy Heller, Valerian Hahn, Matthew Hamman, Wolfgang Breitfuss, Venkateshwar Reddy Bora, Manuel Moser, and Christiane Voigt
Atmos. Meas. Tech., 15, 7375–7394, https://doi.org/10.5194/amt-15-7375-2022, https://doi.org/10.5194/amt-15-7375-2022, 2022
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Flight testing in icing conditions requires instruments that are able to accurately measure the liquid water content of supercooled large droplets (SLDs). This work finds that the 12 mm cone of the Nevzorov hot-wire probe has excellent collection properties for SLDs. We also derive a correction to compensate for the low collision efficiency of small droplets with the cone. The results provide a procedure to evaluate LWC measurements of the 12 mm cone during wind tunnel and airborne experiments.
Stephan E. Bansmer, Arne Baumert, Stephan Sattler, Inken Knop, Delphine Leroy, Alfons Schwarzenboeck, Tina Jurkat-Witschas, Christiane Voigt, Hugo Pervier, and Biagio Esposito
Atmos. Meas. Tech., 11, 3221–3249, https://doi.org/10.5194/amt-11-3221-2018, https://doi.org/10.5194/amt-11-3221-2018, 2018
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Snow, frost formation and ice cubes in our drinks are part of our daily life. But what about our technical innovations like aviation, electrical power transmission and wind-energy production, can they cope with icing? Icing Wind Tunnels are an ideal laboratory environment to answer that question. In this paper, we show how the icing wind tunnel in Braunschweig (Germany) was built and how we can use it for engineering and climate research.
Related subject area
Subject: Clouds | Technique: Laboratory Measurement | Topic: Instruments and Platforms
Comment on “A universally applicable method of calculating confidence bands for ice nucleation spectra derived from droplet freezing experiments” by Fahy et al. (2022)
Icing wind tunnel measurements of supercooled large droplets using the 12 mm total water content cone of the Nevzorov probe
The Microfluidic Ice Nuclei Counter Zürich (MINCZ): a platform for homogeneous and heterogeneous ice nucleation
Effects of the large-scale circulation on temperature and water vapor distributions in the Π Chamber
SPIN modification for low-temperature experiments
Characterization and first results from LACIS-T: a moist-air wind tunnel to study aerosol–cloud–turbulence interactions
Low-temperature triple-capillary cryostat for ice crystal growth studies
A high-speed particle phase discriminator (PPD-HS) for the classification of airborne particles, as tested in a continuous flow diffusion chamber
The SPectrometer for Ice Nuclei (SPIN): an instrument to investigate ice nucleation
BINARY: an optical freezing array for assessing temperature and time dependence of heterogeneous ice nucleation
Experimental quantification of contact freezing in an electrodynamic balance
Application of linear polarized light for the discrimination of frozen and liquid droplets in ice nucleation experiments
Gabor Vali
Atmos. Meas. Tech., 16, 4303–4306, https://doi.org/10.5194/amt-16-4303-2023, https://doi.org/10.5194/amt-16-4303-2023, 2023
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Different methods for the calculation of nucleation spectra from drop-freezing experiments are discussed as the choice of data processing reflects on underlying principles.
Johannes Lucke, Tina Jurkat-Witschas, Romy Heller, Valerian Hahn, Matthew Hamman, Wolfgang Breitfuss, Venkateshwar Reddy Bora, Manuel Moser, and Christiane Voigt
Atmos. Meas. Tech., 15, 7375–7394, https://doi.org/10.5194/amt-15-7375-2022, https://doi.org/10.5194/amt-15-7375-2022, 2022
Short summary
Short summary
Flight testing in icing conditions requires instruments that are able to accurately measure the liquid water content of supercooled large droplets (SLDs). This work finds that the 12 mm cone of the Nevzorov hot-wire probe has excellent collection properties for SLDs. We also derive a correction to compensate for the low collision efficiency of small droplets with the cone. The results provide a procedure to evaluate LWC measurements of the 12 mm cone during wind tunnel and airborne experiments.
Florin N. Isenrich, Nadia Shardt, Michael Rösch, Julia Nette, Stavros Stavrakis, Claudia Marcolli, Zamin A. Kanji, Andrew J. deMello, and Ulrike Lohmann
Atmos. Meas. Tech., 15, 5367–5381, https://doi.org/10.5194/amt-15-5367-2022, https://doi.org/10.5194/amt-15-5367-2022, 2022
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Ice nucleation in the atmosphere influences cloud properties and lifetimes. Microfluidic instruments have recently been used to investigate ice nucleation, but these instruments are typically made out of a polymer that contributes to droplet instability over extended timescales and relatively high temperature uncertainty. To address these drawbacks, we develop and validate a new microfluidic instrument that uses fluoropolymer tubing to extend droplet stability and improve temperature accuracy.
Jesse C. Anderson, Subin Thomas, Prasanth Prabhakaran, Raymond A. Shaw, and Will Cantrell
Atmos. Meas. Tech., 14, 5473–5485, https://doi.org/10.5194/amt-14-5473-2021, https://doi.org/10.5194/amt-14-5473-2021, 2021
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Fluctuations due to turbulence in Earth's atmosphere can play a role in how many droplets a cloud has and, eventually, whether that cloud rains or evaporates. We study such processes in Michigan Tech's cloud chamber. Here, we characterize the turbulent and large-scale motions of air in the chamber, measuring the spatial and temporal distributions of temperature and water vapor, which we can combine to get the distribution of relative humidity, which governs cloud formation and dissipation.
André Welti, Kimmo Korhonen, Pasi Miettinen, Ana A. Piedehierro, Yrjö Viisanen, Annele Virtanen, and Ari Laaksonen
Atmos. Meas. Tech., 13, 7059–7067, https://doi.org/10.5194/amt-13-7059-2020, https://doi.org/10.5194/amt-13-7059-2020, 2020
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We describe a modification of the SPectrometer for Ice Nuclei (SPIN) chamber to study ice nucleation at low temperatures, relevant for ice formation in cirrus clouds. Validation experiments of homogeneous freezing of aqueous ammonium sulfate droplets and heterogeneous ice nucleation on silver iodide particles are included to demonstrate the advantages of the modified SPIN chamber for the investigation of ice nucleation in the extended temperature range.
Dennis Niedermeier, Jens Voigtländer, Silvio Schmalfuß, Daniel Busch, Jörg Schumacher, Raymond A. Shaw, and Frank Stratmann
Atmos. Meas. Tech., 13, 2015–2033, https://doi.org/10.5194/amt-13-2015-2020, https://doi.org/10.5194/amt-13-2015-2020, 2020
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In this paper, we present the new moist-air wind tunnel LACIS-T (Turbulent Leipzig Aerosol Cloud Interaction Simulator). It is used to study cloud physical processes in general and interactions between turbulence and cloud microphysical processes in particular. The operating principle of LACIS-T is explained, and the first results are depicted from deliquescence and droplet formation experiments observing clear indications on the effect of turbulence on these microphysical processes.
Brian D. Swanson and Jon Nelson
Atmos. Meas. Tech., 12, 6143–6152, https://doi.org/10.5194/amt-12-6143-2019, https://doi.org/10.5194/amt-12-6143-2019, 2019
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We have built a triple-capillary cryostat designed to reduce potential instrumental effects that may have influenced earlier measurements and to improve our understanding of the processes responsible for ice crystal shapes and sizes. In this cryostat, a crystal forms on one of three well-separated and ultrafine capillaries. In this paper we describe the new instrument and present several observations made using the instrument to illustrate the instrument's advantages.
Fabian Mahrt, Jörg Wieder, Remo Dietlicher, Helen R. Smith, Chris Stopford, and Zamin A. Kanji
Atmos. Meas. Tech., 12, 3183–3208, https://doi.org/10.5194/amt-12-3183-2019, https://doi.org/10.5194/amt-12-3183-2019, 2019
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A new instrument, the High Speed Particle Phase Discriminator (PPD-HS), is presented, with the goal of quantifying liquid and ice fraction in conditions relevant for mixed-phase clouds. PPD-HS captures the near-forward spatial intensity distribution of scattered light on a single particle basis. Symmetry analysis of the scattering pattern is used to determine the shape of the particles, with cloud droplets and ice crystals producing symmetrical and asymmetrical scattering patterns, respectively.
Sarvesh Garimella, Thomas Bjerring Kristensen, Karolina Ignatius, Andre Welti, Jens Voigtländer, Gourihar R. Kulkarni, Frank Sagan, Gregory Lee Kok, James Dorsey, Leonid Nichman, Daniel Alexander Rothenberg, Michael Rösch, Amélie Catharina Ruth Kirchgäßner, Russell Ladkin, Heike Wex, Theodore W. Wilson, Luis Antonio Ladino, Jon P. D. Abbatt, Olaf Stetzer, Ulrike Lohmann, Frank Stratmann, and Daniel James Cziczo
Atmos. Meas. Tech., 9, 2781–2795, https://doi.org/10.5194/amt-9-2781-2016, https://doi.org/10.5194/amt-9-2781-2016, 2016
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The SPectrometer for Ice Nuclei (SPIN) is a commercially available ice nuclei counter manufactured by Droplet Measurement Technologies in Boulder, CO. This study characterizes the SPIN chamber, reporting data from laboratory measurements and quantifying uncertainties. Overall, we report that the SPIN is able to reproduce previous CFDC ice nucleation measurements.
C. Budke and T. Koop
Atmos. Meas. Tech., 8, 689–703, https://doi.org/10.5194/amt-8-689-2015, https://doi.org/10.5194/amt-8-689-2015, 2015
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A new optical freezing array for the study of heterogeneous ice nucleation in microliter-sized droplets is introduced, tested and applied to the study of immersion freezing in aqueous Snomax suspensions. Using different cooling rates, a small time dependence of ice nucleation induced by two different classes of ice nucleators was detected and the corresponding heterogeneous ice nucleation rate coefficient was quantified.
N. Hoffmann, A. Kiselev, D. Rzesanke, D. Duft, and T. Leisner
Atmos. Meas. Tech., 6, 2373–2382, https://doi.org/10.5194/amt-6-2373-2013, https://doi.org/10.5194/amt-6-2373-2013, 2013
T. Clauss, A. Kiselev, S. Hartmann, S. Augustin, S. Pfeifer, D. Niedermeier, H. Wex, and F. Stratmann
Atmos. Meas. Tech., 6, 1041–1052, https://doi.org/10.5194/amt-6-1041-2013, https://doi.org/10.5194/amt-6-1041-2013, 2013
Cited articles
Allen, M. D. and Raabe, O. G.: Slip correction measurements of spherical solid aerosol particles in an improved millikan apparatus, Aerosol Sci.
Tech., 4, 269–286, https://doi.org/10.1080/02786828508959055, 1985. a
Bansmer, S. E., Baumert, A., Sattler, S., Knop, I., Leroy, D., Schwarzenboeck, A., Jurkat-Witschas, T., Voigt, C., Pervier, H., and Esposito, B.: Design, construction and commissioning of the Braunschweig Icing Wind Tunnel, Atmos. Meas. Tech., 11, 3221–3249, https://doi.org/10.5194/amt-11-3221-2018, 2018. a, b, c
Bell, I. H., Wronski, J., Quoilin, S., and Lemort, V.: Pure and pseudo-pure fluid thermophysical property evaluation and the open-source thermophysical property library coolprop, Industrial and Engineering Chemistry Research, 53, 2498–2508, https://doi.org/10.1021/ie4033999, 2014. a, b
Belyaev, S. P. and Levin, L. M.: Techniques for collection of representative aerosol samples, J. Aerosol Sci., 5, 325–338, https://doi.org/10.1016/0021-8502(74)90130-X, 1974. a, b, c
Bernstein, B. C., Ratvasky, T. P., Miller, D. R., and McDonough, F.: Freezing Rain as an In-Flight Icing Hazard, Technical Report TM-2000-210058, NASA, Washington D.C., USA, 12 pp., 2000. a
Besson, J.-P., Schilt, S., and Thévenaz, L.: Sub-ppm multi-gas photoacoustic sensor, Spectrochim. Acta A, 63, 899–904, https://doi.org/10.1016/j.saa.2005.10.034, 2006. a
Bozóki, Z., Szakáll, M., Mohácsi, Á., Szabó, G., and Bor, Z.: Diode laser based photoacoustic humidity sensors, Sensor. Actuat. B-Chem., 91, 219–226, https://doi.org/10.1016/S0925-4005(03)00120-5, 2003. a
Bozóki, Z., Pogány, A., and Szabó, G.: Photoacoustic instruments for practical applications: Present, potentials, and future challenges, Appl. Spectrosc. Rev., 46, 1–37, https://doi.org/10.1080/05704928.2010.520178, 2011. a
Breitegger, P. and Bergmann, A.: A Precise Gas Dilutor Based on Binary Weighted Critical Flows to Create NO2 Concentrations, Proceedings, 2, 998, https://doi.org/10.3390/proceedings2130998, 2018. a
Breitfuss, W., Wannemacher, M., Knöbl, F., and Ferschitz, H.: Aerodynamic Comparison of Freezing Rain and Freezing Drizzle Conditions at the RTA Icing Wind Tunnel, SAE J.-Automot. Eng., 2, 245–255, https://doi.org/10.4271/2019-01-2023, 2019. a, b, c
Chalmers, J., Davison, C., Macleod, J., Neuteboom, M., and Fuleki, D.: Icing Test and Measurement Capabilities of the NRC's Gas Turbine Laboratory, SAE J. Automot. Eng., SAE Technical Paper 2019-01-1943, https://doi.org/10.4271/2019-01-1943, 2019. a
Cober, S., Bernstein, B., Jeck, R., Hill, E., Isaac, G., Riley, J., and Shah, A.: Data and Analysis for the Development of an Engineering Standard for Supercooled Large Drop Conditions, Technical Report, US Department of Transportation, Federal Aviation Administration, Washington DC, USA, 89 pp., 2009. a
Cober, S. G., Isaac, G. A., Korolev, A. V., and Strapp, J. W.: Assessing cloud-phase conditions, J. Appl. Meteorol., 40, 1967–1983, https://doi.org/10.1175/1520-0450(2001)040<1967:ACPC>2.0.CO;2, 2001a. a
Cober, S. G., Isaac, G. A., and Strapp, J. W.: Characterizations of aircraft icing environments that include supercooled large drops, J. Appl. Meteorol., 40, 1984–2002, https://doi.org/10.1175/1520-0450(2001)040<1984:COAIET>2.0.CO;2, 2001b. a
Davis, S. M., Hallar, A. G., Avallone, L. M., and Engblom, W.: Measurement of
total water with a tunable diode laser hygrometer: Inlet analysis,
calibration procedure, and ice water content determination, J.
Atmos. Ocean. Tech., 24, 463–475, https://doi.org/10.1175/JTECH1975.1,
2007. a
Davison, C., MacLeod, J., Strapp, J., and Buttsworth, D.: Isokinetic Total Water Content Probe in a Naturally Aspirating Configuration: Initial Aerodynamic Design and Testing, in: Proceedings of the 46th AIAA Aerospace Sciences Meeting and Exhibit, Reston, USA, 7–10 January 2008, https://doi.org/10.2514/6.2008-435, 2008. a
Davison, C. R., Walter Strapp, J., Lilie, L., Ratvasky, T. P., and Dumont, C.: Isokinetic TWC evaporator probe: Calculations and systemic uncertainty analysis, in: Proceedings of the 8th AIAA Atmospheric and Space Environments Conference, Washington, D.C., 13–17 June 2016, https://doi.org/10.2514/6.2016-4060, 2016. a, b, c
Dorsi, S. W., Kalnajs, L. E., Toohey, D. W., and Avallone, L. M.: A fiber-coupled laser hygrometer for airborne total water measurement, Atmos. Meas. Tech., 7, 215–223, https://doi.org/10.5194/amt-7-215-2014, 2014. a, b
Emery, E. F., Miller, D. R., Plaskon, S. R., Strapp, W., and Lillie, L.: Ice particle impact on cloud water content instrumentation, in: Proceedings of the 42nd AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, 5–8 January 2004, 8387–8398, https://doi.org/10.2514/6.2004-731, 2004. a
FAA CFR-25: US Code of Federal Regulations, Title 14, Part 25, Airworthiness Standards, Transport Category Airplanes, Federal Aviation Administration, Department of Transportation, USA, 2019. a
Gent, R. W., Dart, N. P., and Cansdale, J. T.: Aircraft icing, Philos.
T. R. Soc. A, 358, 2873–2911, https://doi.org/10.1098/rsta.2000.0689, 2000. a
Giacomo, P.: Equation for the determination of the density of moist air
(1981), Metrologia, 18, 33–40, https://doi.org/10.1088/0026-1394/18/1/006, 1982. a, b
Gordon, I. E., Rothman, L. S., Hill, C., Kochanov, R. V., Tan, Y., Bernath, P. F., Birk, M., Boudon, V., Campargue, A., Chance, K. V., Drouin, B. J., Flaud, J. M., Gamache, R. R., Hodges, J. T., Jacquemart, D., Perevalov, V. I., Perrin, A., Shine, K. P., Smith, M. A., Tennyson, J., Toon, G. C., Tran, H., Tyuterev, V. G., Barbe, A., Császár, A. G., Devi, V. M., Furtenbacher, T., Harrison, J. J., Hartmann, J. M., Jolly, A., Johnson, T. J., Karman, T., Kleiner, I., Kyuberis, A. A., Loos, J., Lyulin, O. M., Massie, S. T., Mikhailenko, S. N., Moazzen-Ahmadi, N., Müller, H. S., Naumenko, O. V., Nikitin, A. V., Polyansky, O. L., Rey, M., Rotger, M., Sharpe, S. W., Sung, K., Starikova, E., Tashkun, S. A., Auwera, J. V., Wagner, G., Wilzewski, J., Wcisło, P., Yu, S., and Zak, E. J.: The HITRAN2016 molecular spectroscopic database, J. Quant. Spectrosc. Ra., 203, 3–69, https://doi.org/10.1016/j.jqsrt.2017.06.038, 2017. a
Greenspan, L.: Functional equations for the enhancement factors for CO2-free
moist air, J. Res. NBS
A Phys. Ch., 80, 41–44, https://doi.org/10.6028/jres.080a.007, 1976. a
Hardy, J. E., Hylton, J. O., and Mcknight, T. E.: Empirical correlations for thermal flowmeters covering a wide range of thermal-physical properties, National Conference of Standards Labs, Charlotte, NC, USA, 19–22 July 1999. a
Hare, D. E. and Sorensen, C. M.: The density of supercooled water. II. Bulk
samples cooled to the homogeneous nucleation limit, J. Chem.
Phys., 87, 4840–4845, https://doi.org/10.1063/1.453710, 1987. a
Hodgkinson, J. and Tatam, R. P.: Optical gas sensing: a review, Meas. Sci. Technol., 24, 012004, https://doi.org/10.1088/0957-0233/24/1/012004, 2013. a
Isaac, G. A., Korolev, A. V., Strapp, J. W., Cober, S. G., Boudala, F. S., Marcotte, D., and Reich, V. L.: Assessing the collection efficiency of natural cloud particles impacting the Nevzorov total water content probe, in: Proceedings of the 44th AIAA Aerospace Sciences Meeting, Reno, Nevada, 9–12 January 2006, Reno, Nevada, 14846–14858, https://doi.org/10.2514/6.2006-1221, 2006. a
Joint Committee for Guides in Metrology: Evaluation of measurement data – Guide to the expression of uncertainty in measurement, ISO/IEC GUIDE 98-3:2008, Uncertainty of measurement – Part 3: Guide to the expression of uncertainty in measurement (GUM:1995), International Organization for Standardization, Geneva, Switzerland, 2008a. a, b
Joint Committee for Guides in Metrology: Evaluation of measurement data – Supplement 1 to the Guide to the expression of uncertainty in measurement – Propagation of distributions using a Monte Carlo method, ISO/IEC GUIDE 98-3:2008/SUPPL 1:2008, Uncertainty of measurement – Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) – Supplement 1: Propagation of distributions using a Monte Carlo method, International Organization for Standardization, Geneva, Switzerland, 2008b. a
Korolev, A., Strapp, J. W., Isaac, G. A., and Emery, E.: Improved airborne hot-wire measurements of ice water content in clouds, J. Atmos. Ocean. Tech., 30, 2121–2131, https://doi.org/10.1175/JTECH-D-13-00007.1, 2013. a, b
Kosterev, A. A., Tittel, F. K., Knittel, T. S., Cowie, A., and Tate, J. D.: Trace Humidity Sensor based on Quartz-Enhanced Photoacoustic Spectroscopy, Laser Applications to Chemical, Security and Environmental Analysis 2006,
Incline Village, Nevada United States, 5–9 February 2006, Paper ID: TuA2, https://doi.org/10.1364/LACSEA.2006.TuA2, 2006. a
Krämer, M. and Afchine, A.: Sampling characteristics of inlets operated at low ratios: New insights from computational fluid dynamics (CFX) modeling, J. Aerosol Sci., 35, 683–694, https://doi.org/10.1016/j.jaerosci.2003.11.011, 2004. a
Lang, B., Breitegger, P., Brunnhofer, G., Prats Valero, J., Schweighart, S., Klug, A., Hassler, W., and Bergmann, A.: Molecular relaxation effects on vibrational water vapor photoacoustic spectroscopy in air, Appl. Phys. B-Lasers O., 126, 1–18, https://doi.org/10.1007/s00340-020-7409-3, 2020. a, b, c, d, e
Langridge, J. M., Richardson, M. S., Lack, D. A., Brock, C. A., and Murphy, D. M.: Limitations of the photoacoustic technique for aerosol absorption measurement at high relative humidity, Aerosol Sci. Tech., 47, 1163–1173, https://doi.org/10.1080/02786826.2013.827324, 2013. a
LI-COR Inc.: Using the LI-830 and LI-850 Gas Analyzers, Technical Report, available at: https://www.licor.com/documents/gz8gaf0ls5vhvpl52xtmyr8mfoh5kwe8 (last access: 12 March 2021), 2020. a
Lira, I.: Evaluating the Measurement Uncertainty, IOP Publishing, London, UK, 2002. a
Mason, J. G., Strapp, J. W., and Chow, P.: The ice particle threat to engines in flight, in: Proceedings of the 44th AIAA Aerospace Sciences Meeting, Reno, Nevada, USA, 9–12 January 2006, 2445–2465, 2006. a
Mercer, T. T.: Aerosol technology in hazard evaluation, Academic Press, New York, USA, https://doi.org/10.1016/0021-9797(74)90320-8, 1973. a
Meyer, C. W., Hodges, J. T., Huang, P. H., Miller, W. W., Ripple, D. C., Scace, G. E., Gutierrez, C. M., and Gallagher, P.: Calibration of Hygrometers with the Hybrid Humidity Generator, National Institute of Standards and Technology, Gaithersburg, Maryland, USA, NIST SP 250-83, 48 pp., https://doi.org/10.6028/NIST.SP.250-83, 2008. a
Orchard, D. M., Szilder, K., and Davison, C. R.: Design of an icing wind tunnel contraction for supercooled large drop conditions, in: 2018 Atmospheric and Space Environments Conference, Atlanta, Georgia, 25–29 June 2018, AIAA 2018-3185, https://doi.org/10.2514/6.2018-3185, 2018. a
Orchard, D. M., Clark, C., and Chevrette, G.: Measurement of Liquid Water Content for Supercooled Large Drop Conditions in the NRC's Altitude Icing Wind Tunnel, in: SAE J.-Automot. Eng., Article ID: 2019-01-2007, https://doi.org/10.4271/2019-01-2007, 2019. a
Politovich, M. K.: Aircraft icing caused by large supercooled droplets, J. Appl. Meteorol., 28, 856–868, https://doi.org/10.1175/1520-0450(1989)028<0856:AICBLS>2.0.CO;2, 1989. a
Rader, D. J.: Momentum slip correction factor for small particles in nine common gases, J. Aerosol Sci., 21, 161–168, https://doi.org/10.1016/0021-8502(90)90001-E, 1990. a
Rader, D. J. and Marple, V. A.: A study of the effects of anisokinetic sampling, Aerosol Sci. Tech., 8, 283–299, https://doi.org/10.1080/02786828808959190, 1988. a
Ratvasky, T., Harrah, S., Strapp, J. W., Lilie, L., Proctor, F., Strickland, J., Hunt, P., Bedka, K., Diskin, G., Nowak, J. B., Bui, T. P., Bansemer, A., and Dumont, C.: Summary of the High Ice Water Content (HIWC) RADAR Flight Campaigns, SAE J.-Automot. Eng., Article ID: 2019-01-2027, https://doi.org/10.4271/2019-01-2027, 2019. a
Riley, J. T.: Mixed-Phase Icing Conditions: A Review, Technical Report
DOT/FAA/AR-98/76, US Department of Transportation Federal Aviation
Administration, Washington DC, USA, 45 pp., 1998. a
SAE AIR-6341: SLD capabilities of icing wind tunnels, SAE International, available at: https://www.sae.org/standards/content/air6341/ (last access: 12 March 2021), 2015. a
SAE ARP-5905: Calibration and Acceptance of Icing Wind Tunnels, SAE International, available at: https://www.sae.org/standards/content/arp5905/ (last access: 12 March 2021), 2015. a
Selamet, A. and Radavich, P. M.: The effect of length on the acoustic attenuation performance of concentric expansion chambers: An analytical, computational and experimental investigation, J. Sound Vib., 201, 407–426, https://doi.org/10.1006/jsvi.1996.0720, 1997. a
Steen, L.-C. E., Ide, R. F., and Van Zante, J. F.: An assessment of the icing blade and the SEA multi-element sensor for liquid water content calibration of the NASA GRC icing research tunnel, in: Proceedings of the 8th AIAA Atmospheric and Space Environments Conference, Washington, D.C., USA 13–17 June 2016, AIAA 2016-4051, https://doi.org/10.2514/6.2016-4051, 2016. a, b
Strapp, J., Lilie, L. E., Ratvasky, T. P., Davison, C., and Dumont, C.: Isokinetic TWC evaporator probe: Development of the IKP2 and performance testing for the HAIC-HIWC darwin 2014 and cayenne-2015 field campaigns, in: Proceedings of the 8th AIAA Atmospheric and Space Environments Conference,
Washington, D.C., USA, 13–17 June 2016, AIAA 2016-4059, 1–28, https://doi.org/10.2514/6.2016-4059, 2016. a, b, c
Strapp, J. W., Oldenburg, J., Ide, R., Lilie, L., Bacic, S., Vukovic, Z.,
Oleskiw, M., Miller, D., Emery, E., and Leone, G.: Wind tunnel measurements
of the response of hot-wire liquid water content instruments to large
droplets, J. Atmos. Ocean. Tech., 20, 791–806,
https://doi.org/10.1175/1520-0426(2003)020<0791:WTMOTR>2.0.CO;2, 2003.
a, b
Szakáll, M., Bozóki, Z., Kraemer, M., Spelten, N., Moehler, O., and
Schurath, U.: Evaluation of a Photoacoustic Detector for Water Vapor
Measurements under Simulated Tropospheric/Lower Stratospheric Conditions,
Environ. Sci. Technol., 35, 4881–4885,
https://doi.org/10.1021/es015564x, 2001. a
Szakáll, M., Varga, A., Pogány, A., Bozóki, Z., and
Szabó, G.: Novel resonance profiling and tracking method for
photoacoustic measurements, Appl. Phys. B, 94, 691–698,
https://doi.org/10.1007/s00340-009-3391-5, 2009. a, b
Tátrai, D., Bozóki, Z., Smit, H., Rolf, C., Spelten, N., Krämer, M., Filges, A., Gerbig, C., Gulyás, G., and Szabó, G.: Dual-channel photoacoustic hygrometer for airborne measurements: background, calibration, laboratory and in-flight intercomparison tests, Atmos. Meas. Tech., 8, 33–42, https://doi.org/10.5194/amt-8-33-2015, 2015. a, b, c
Van Zante, J. F., Ratvasky, T. P., Bencic, T. J., Challis, C. C., Timko, E. N., and Woike, M. R.: Update on the nasa glenn propulsion systems lab icing and ice crystal cloud characterization (2017), in: Proceedings of the 2018 Atmospheric and Space Environments Conference, Atlanta, Georgia, USA, 25–29 June 2018, 77–83, https://doi.org/10.2514/6.2018-3969, 2018. a
Vukits, T. J.: Overview and risk assessment of icing for transport category aircraft and components, in: Proceedings of the 40th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, USA, 14–17 January 2002, Abstract ID: 2002-0811, https://doi.org/10.2514/6.2002-811, 2002. a
Wagner, W. and Pruss, A.: International Equations for the Saturation Properties of Ordinary Water Substance, Revised According to the International Temperature Scale of 1990, J. Phys. Chem. Ref. Data, 22, 783–787, https://doi.org/10.1063/1.555926, 1993. a
Werle, P., Mücke, R., and Slemr, F.: The limits of signal averaging in
atmospheric trace-gas monitoring by tunable diode-laser absorption
spectroscopy (TDLAS), Appl. Phys. B,
57, 131–139, https://doi.org/10.1007/BF00425997, 1993. a
Wernecke, J. and Wernecke, R.: Industrial Moisture and Humidity Measurement: A Practical Guide, Wiley-VCH, Weinheim, Germany, 2013. a
Wiederhold, P. R.: Water Vapor Measurement: Methods and Instrumentation, CRC Press, Boca Raton, Florida, USA, 1997. a
Wieser, M. E. and Berglund, M.: Atomic weights of the elements 2007 (IUPAC technical report), Pure Appl. Chem., 81, 2131–2156, https://doi.org/10.1351/PAC-REP-09-08-03, 2009. a
Willeke, K.: Temperature dependence of particle slip in a gaseous medium,
J. Aerosol Sci., 7, 381–387, https://doi.org/10.1016/0021-8502(76)90024-0,
1976. a
Zuckerwar, A. J.: Handbook of the Speed of Sound in Real Gases, Academic Press, San Diego, California, USA, 2002. a
Short summary
This work describes the design, calibration, and application of a hygrometer and sampling system, which have been developed and used for water content measurement in experimentally simulated atmospheric icing conditions with relevance in fundamental icing research as well as aviation testing and certification. Together with a general description of water content measurement and accompanying uncertainties, the results of a comparison to reference instruments in an icing wind tunnel are presented.
This work describes the design, calibration, and application of a hygrometer and sampling...