Il Nuovo Cimento C

, Volume 18, Issue 4, pp 419–440 | Cite as

A study of the assessment of air temperature, and sensible-and latent-heat fluxes from sonic-anemometer observations

  • C. Cassardo
  • D. Sacchetti
  • M. G. Morselli
  • D. Anfossi
  • G. Brusasca
  • A. Longhetto


In the past ten years, use of sonic anemometers to provide fast-response wind sensing in the atmospheric surface layer became more and more intensive, due to their increasing availability, decreasing cost and increasing number of publications regarding their data treatment. In this paper, we present an algorithm we have developed in order to analyse the data of one of the most diffused types of sonic anemometer,i.e. the Gill sonic anemometer. Our software allows to evaluate the air temperature and the sensible- and latent-heat fluxes if also low-response measurements of air humidity at the same level of sonic anemometer, and of net radiation and ground surface flux are available. We let our software the option of evaluating the fluxes along the mean local streamline (thus the turbulent fluxes are associated with transport across mean streamline surfaces). By using the data gathered in two field experiments, we discuss the applications of the proposed formulations and check the accuracy of our method by comparing the evaluated fluxes with those measured by fluxmeter.

PACS 92.60.Fm

Boundary layer structure and processes 


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  1. [1]
    Carrier andCarlson,A true air speed indicator, Internal Report, NDRC, Cruft Laboratories, Harvard University (1944).Google Scholar
  2. [2]
    Barret F. andSuomi V. F.,J. Meteor.,6 (1949) 273.Google Scholar
  3. [3]
    Corby R. F.,Electronics,23 (1950) 1.Google Scholar
  4. [4]
    Schotland R. M.,J. Meteor.,12 (1955) 386.Google Scholar
  5. [5]
    Suomi V. E.,Energy budget studies and development of the sonic anemometer for spectrum analysis, Technical Report AFCRC 56-274, Dept. of Meteorology, University of Wisconsin (1957).Google Scholar
  6. [6]
    Kaimal J. C.,Sonic anemometer measurement of atmospheric turbulence, inProceedings of Dynamic Flow Conference, 1978, Skowlunde, Denmark (1979), p. 551.Google Scholar
  7. [7]
    Kaimal J. C. andBusinger, J. A.,J. Appl. Meteor.,2 (1963) 863.CrossRefGoogle Scholar
  8. [8]
    Wyngaard J. C.,Annu. Rev. Fluid Mech.,13 (1981) 399.CrossRefADSGoogle Scholar
  9. [9]
    Friehe C. A.,J. Appl. Meteor.,15 (1976) 607.CrossRefADSGoogle Scholar
  10. [10]
    Ataktürk S. S. andKatsaros K. B.,J. Atmos. Ocean. Technol.,6 (1989) 509.CrossRefADSGoogle Scholar
  11. [11]
    Hanafusa T., Fujitani T., Kobori Y. andMitsuta Y.,Pap. Meteorol. Geophys.,33 (1982) 1.Google Scholar
  12. [12]
    Schotanus P., Nieuwstadt F. T. M. andDe Bruine H. A. R.,Boundary-Layer Meteorol.,26 (1983) 81.CrossRefADSGoogle Scholar
  13. [13]
    Mortensen N.,Flow-response characteristics of the Kaijo Denki omni-directional sonic anemometer, Internal Report Risø-R-704(EN), Risø National Laboratory, Roskilde, Denmark, 1994.Google Scholar
  14. [14]
    Mc Millen R. T.,Boundary-Layer Meteorol.,43 (1988) 231.CrossRefADSGoogle Scholar
  15. [15]
    Kaimal J. C. andGaynor J. E.,Boundary-Layer Meteorol.,56 (1991) 401.CrossRefADSGoogle Scholar
  16. [16]
    Hignett P.,Boundary-Layer Meteorol.,61 (1992) 175.CrossRefADSGoogle Scholar
  17. [17]
    Gill G. C.,Gill Instrument 3 axis ultrasonic anemometer product specification, issue 4.0, Gill anemometer reference user's guide, Gill Instruments Ltd.Google Scholar
  18. [18]
    Anfossi D., Cassardo C., Ferrero E., Longhetto A., Sacchetti D., Brusasca G., Colombo V., Marzorati A., Morselli M. G., Rocchetti, F., Tinarelli G.,On the analysis of ultrasonic anemometer data, Internal Report ICG/CNR N. 282/93, CNR (National Research Council), Turin (Italy) 1993.Google Scholar
  19. [19]
    Van der Howen, I.,J. Meteor.,14 (1957) 160.Google Scholar
  20. [20]
    Tanner B. D., Tanner M. S., Dugas W. A., Campbell E. C. andBland B. L.,Evaluation of an operational eddy correlation system for evapotranspiration measurements, collected paper of “Eddy correlation instrumentation (models KH20 and CA27)», version 1/1.88, Campbell Scientific Ltd.Google Scholar
  21. [21]
    Tanner B. D.,Measurements with a portable eddy correlation system, collected paper of «Eddy correlation instrumentation (models KH20 and CA27)», version 1/1.88, Campbell Scientific Ltd.Google Scholar
  22. [22]
    Campbell E. C. andTanner B. D.,A Kripton hygrometer for measurement of atmospheric water vapor concentration, collected paper of «Eddy correlation instrumentation (models KH20 and CA27)», version 1/1.88, Campbell Scientific Ltd.Google Scholar
  23. [23]
    Biltoft C. A. andGaynor J. E.,Comparison of two types of sonic anemometers and fast response thermometers, collected paper of «Eddy correlation instrumentation (models KH20 and CA27)», version 1/1.88, Campbell Scientific Ltd.Google Scholar
  24. [24]
    Stull R.,An introduction to Boundary Layer Meteorology (Kluwer Academic Publisher) 1988.Google Scholar
  25. [25]
    Kaimal J. C. andFinnigan J. J.,Atmospheric Boundary Layer Flows (Oxford University Press) 1994.Google Scholar
  26. [26]
    Garratt J. R.,The Atmospheric Boundary Layer (Cambridge Atmospheric and Space Science) 1992.Google Scholar
  27. [27]
    Marzorati A., Brusasca G., Colombo V., Bistacchi S., Bocchiola G., Marcacci P., Morselli M. G., Quinteri G., Rocchetti F., Tinarelli G., Anfossi D., Ferrero E. andSacchetti D.,Vertical soundings and surface measurements of meteorological variables performed by ENEL/CNR team during TRACT 1992 Campaign, in TRACT Workshop, 12–14 January1993, Karlsruhe, Germany (Fraunhofer Institute, Garmish-Partenkirchen).Google Scholar
  28. [28]
    Gaynor J. E. andBiltoft C. A.,J. Atmos. Ocean Technol.,6 (1989) 208.CrossRefADSGoogle Scholar
  29. [29]
    Zhang S. F., Wyngaard J. C., Businger J. A. andOncley S. P.,J. Atmos. Ocean. Technol.,3 (1986) 315.CrossRefGoogle Scholar
  30. [30]
    Huges W. F. andBrighton J. A.,Fluidodinamica (Shaum) (Italian version of McGraw-Hill, New York, N.Y.) 1972.Google Scholar
  31. [31]
    Holton J. R.,An introduction to Dynamical Meteorology (Academic Press) 1979.Google Scholar

Copyright information

© Società Italiana di Fisica 1995

Authors and Affiliations

  • C. Cassardo
    • 1
    • 2
  • D. Sacchetti
    • 2
  • M. G. Morselli
    • 3
  • D. Anfossi
    • 4
  • G. Brusasca
    • 3
  • A. Longhetto
    • 2
  1. 1.Dipartimento di Scienze (DSTA)Università di Torino, Sede di AlessandriaAlessandriaItaly
  2. 2.Istituto di Fisica Generale (IFG) dell'UniversitàTorinoItaly
  3. 3.Environmental and Material Research Center (CRAM)ENEL S.p.A.MilanoItaly
  4. 4.Istituto di Cosmo-Geofisica (ICG)CNRTorinoItaly

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