Comparison of techniques for measurements of fog liquid water content

B. G. Arends; G. P. A. Kos; W. Wobrock; D. Schell; K. J. Noone; S. Fuzzi; S. Pahl

doi:10.3402/tellusb.v44i5.15572

Comparison of techniques for measurements of fog liquid water content

Tellus B: Chemical and Physical Meteorology

Volume 44 (1992): Issue 5

By: B. G. Arends, G. P. A. Kos, W. Wobrock, D. Schell, K. J. Noone, S. Fuzzi and S. Pahl

Open Access

|Jan 1992

Abstract

During the Po Valley Fog Experiment 1989, four different methods for the measurement of the liquid water content in fog have been operated side by side. In order to check the performance of the PVM-100 (Particulate Volume Monitor) under field conditions, the data were compared to the results of the measurements with two FSSP-100 (Forward Scattering Spectrometer Probes), a Johnson Williams heated wire probe, and a Lyman-α instrument. Accuracy, limitations, and calibrations of these instruments are discussed. Results of fog chamber calibrations of a PVM-100 are shown. The PVM-100 was concluded to be the best instrument under laboratory and field conditions.

References

Baumgardner , D . 1983 . An analysis of five water droplet measuring instruments . J. Appl. Meteorol . 22 , 891 – 910 .
Search in Google Scholar Back to article
Baumgardner , D. , Strapp , W. and Dye , J. E . 1985 . Evaluation of the Forward Scattering Spectrometer Probe. Part II: Corrections for coincidence and dead-time losses. I Atmos . Ocean. Technal. 2 , 626 – 632 .
Search in Google Scholar Back to article
Cooper , W. A . 1988 . Effects of coincidence on measurements with a Forward Scattering Spectrometer Probe . J. Atmos. Ocean. Technol . 5 , 823 – 832 .
Search in Google Scholar Back to article
Chylek , P . 1978 . Extinction and liquid water content of fogs and clouds . J. Atmos. Scl . 35 , 296 – 300 .
Search in Google Scholar Back to article
Fuzzi , S. , Facchini , M. C. , Orsi , G. , Lind, J. A. , Wobrock, W. , Kessel, M. , Maser, R. , Jaeschke, W. , Enderle, K. H. , Arends, B. G. , Berner, A. , SoIly, I. , Kruisz, C. , Reischl, G. , Pahl, S. , Kaminski, U. , Winkler, P. , Ogren, J. A. , Noone, K.J. , Hallberg, A. , Fierlinger-Oberlinninger, H. , Puxbaum, H. , Marzorati, A. , Hansson, H.-C. , Wiedensohler, A. , Svenningsson, I. B. , Martinsson, B. G. , Schell, D. and Georgii, H. W. 1992 . The Po Valley Fog Experiment 1989: an overview . Tellus 44B , 448 – 468
Search in Google Scholar Back to article
Gayet , J. F . 1986 . Calibration of Johnson-Williams and PMS ASSP probes in a wind tunnel . J. Atmos. Ocean. Technol . 3 , 381 – 90 .
Search in Google Scholar Back to article
Gerber , H . 1984 . Liquid water content of fogs and hazes from visible light scattering . J. Climate Appl. Meteor . 23 , 1247 – 1252 .
Search in Google Scholar Back to article
Gerber , H . 1991 . Direct measurement of suspended particulate volume concentration and far-infrared extinction coefficient with a laser-diffraction instrument . AppL Optics 33 , 4824 – 4831 .
Search in Google Scholar Back to article
Knollenberg , R. G . 1981. Techniques for probing cloud microstructure. In: Clouds, their formation, optical properties and effects (eds. P. V. Hobbs , A. Deepak ). New York, Academic Press, pp. 15 – 92.
Search in Google Scholar Back to article
Mallant , R. K. A. M . 1988. A fog chamber and wind tunnel facility for calibration of cloud water collectors. In: Acid deposition at high elevation sites (eds. M. H. Unsworth , D. Fowler ), Dordrecht, Kluwer Acad. Publ., pp. 479 – 490.
Search in Google Scholar Back to article
Neel , C. B . 1973 . Measurement of liquid-water content with a heated wire. In: Proc. 19th Int. Aerospace Symp. (ed. B. Washburn ). vol . 19 , 301 – 309 .
Search in Google Scholar Back to article
Nolan , P. F. and Jennings , S. G . 1987 . Extinction and liquid water content measurements at CO2 laser wavelength . J. Atmos. Ocean Technol . 4 , 391 – 400 .
Search in Google Scholar Back to article
Noone , K. J. , Ogren , J. A. , Heintzenberg , J. , Charlson , R. J. and Covert , D. S . 1988 . Design and calibration of a counterflow virtual impactor for sampling of atmospheric fog and cloud droplets . Aerosol Sci. Technol . 8 , 235 – 244 .
Search in Google Scholar Back to article
Personne , P. , Brenguier , J. L. , Inty, J. P. and Pointin, Y. 1982 . Comparative study and calibration of sensors for the measurement of the liquid water content of clouds with small droplets . J. Appl. MeteoroL 21 , 189 – 196
Search in Google Scholar Back to article
Pinnick , R. G. , Garvey , D. M. and Duncan , L. D . 1981 . Calibration of Knollenberg light-scattering counters for measurement of cloud droplets . J. Appl. Meteorol . 20 , 1049 – 1057 .
Search in Google Scholar Back to article
Strapp , J. W. and Schemenauer , R. S . 1982 . Calibrations of Johnson-Williams liquid water content meters in a high-speed icing tunnel . J. Appl MeteoroL 21 , 98 – 108 .
Search in Google Scholar Back to article
Valente , R. J. , Mallant , R. K. A. M. , McLaren , S. E. , Schemenauer , R. S. and Stagner , R. E . 1989 . Field intercomparison of ground-based cloud physics instruments at Whitetop Mountain, Virginia . J. Atmos. Ocean. Technol . 6 , 396 – 406 .
Search in Google Scholar Back to article
Zuber , A. and Witt , G . 1987 . Optical hygrometer using differential absorption of hydrogen Lyman-a radiation . Applied Optics 26 , 3083 – 3089 .
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.3402/tellusb.v44i5.15572 | Journal eISSN: 1600-0889

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Language: English

Page range: 604 - 611

Submitted on: Nov 25, 1991

Accepted on: May 25, 1992

Published on: Jan 1, 1992

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1992 B. G. Arends, G. P. A. Kos, W. Wobrock, D. Schell, K. J. Noone, S. Fuzzi, S. Pahl, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 44 (1992): Issue 5