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On the Heat Energy Fluxes in the Non-stationary Surface Boundary Layer at Hells Gate, Terra Nova Bay (Antarctica)

  • S. Ferrarese
  • C. Cassardo
  • A. Longhetto
  • D. Bertoni
  • R. Forza
  • G. Ficca
  • M. Pangia
  • R. Purini
Conference paper

Abstract

Within the framework of scientific activities of the Italian Antarctic Expedition at Terra Nova Bay (74° 41’ 42”S, 164° 7’ 23”E) during the southern-summer of 1994–95, an uninterrupted three week programme of measurement of sensible and latent turbulent heat fluxes has been run at two locations, 5 km apart from each other, of Hells Gate ice shelf (inner mast: 74° 50’8.3”S, 163° 44’ 2.8E, 19.85 m a.s.l.; coastal mast: 74°52’ 20.2”S, 163° 49’ 6.4”E, 12.47 m a.s.l.). The aim of the programme was to assess the transfer of heat energy (in particular, its latent component) at the air/ice interface as a function of different atmospheric forcings (wind, temperature, solar radiation) in order to describe the state and evolution of the thermal properties of the non stationary atmospheric boundary layer near the surface. To this end, a prognostic enthalpy balance model, whose input data was the information collected during the experimental programme, has been used to establish the relative role played by the different terms concurring to the heat energy budget under different meteorological conditions, ranging from moderate breeze to strong katabatic wind episodes. The experiment involved the collaboration between teams from the Department of Physics, University of Torino and the Institute of Atmospheric Physics of National Research Council in Roma. This paper reviews the experimental and analytic methodologies and discusses the most meaningful results.

Keywords

Heat Flux Latent Heat Flux Vertical Divergence Turbulent Flux Turbulent Heat Flux 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Muench RD, CH Pease Polynya and leads: an overview of physical processes and environment. J Geophys Res 95(C6):9461–9479Google Scholar
  2. 2.
    Ficca G, Pangia M, Pierini S, Purini R, Sansone E (1996) A turbulent data analysis in the Antarctic boundary layer. Il Nuovo Cimento 19 (C4): 487–504CrossRefGoogle Scholar
  3. 3.
    Hines KM, Bromwich DH, Parish TR (1995) A mesoscale modeling study of the atmospheric circulation of high southern latitudes. Mon Wea Rev 123: 1146–1165CrossRefGoogle Scholar
  4. 4.
    Bromwich DH (1991) Mesoscale cyclogenesis over the southwestern Ross Sea linked to strong katabatic winds. Mon W ae Rev 119: 1736–1752CrossRefGoogle Scholar
  5. 5.
    McMillen RT (1988) An eddy correlation technique with extended applicability to non-simple terrain. Boundary-Layer Met 43: 231–245CrossRefGoogle Scholar
  6. 6.
    Anfossi D, Cassardo C, Ferrero E, Longhetto A, Sacchetti D, Brusasca G, Colombo V, Marzorati A, Morselli MG, Rocchetti F, Tinarelli G (1993) On the analysis of ultrasonic anemometer data. Internal Report N; 282/93, Istituto di Cosmogeofisica, CNR, TorinoGoogle Scholar
  7. 7.
    Cassardos C, Sacchetti D, Morselli MG, Anfossi D, Brusasca G, Longhetto A (1995) A study of the assessment of air temperature and sensible-and latent-heat fluxes from sonic-anemometer observation. Il Nuovo Cimento 18 (C4): 419–440CrossRefGoogle Scholar
  8. 8.
    King JC (1990) Some measurements of turbulence over an Antarctic ice shelf. QJR Meteorol Soc 116: 379–400CrossRefGoogle Scholar
  9. 9.
    Heinemann G (1988) On the structure and energy budget of the boundary layer in the vicinity of the Filchner/Ronne Ice Shelf Front ( Antarctica ). Beitr Phys Atmos 244–258Google Scholar
  10. 10.
    Stull RB (1988) An introduction to boundary layer meteorology. Kluwer Academic Press, DordrechtGoogle Scholar
  11. 11.
    Pielke RA (1984) Mesoscale meteorological modeling. Academic Press, LondonGoogle Scholar
  12. 12.
    Brutsaert W (1982) Evaporation into the atmosphere. D Reidel Publishing, DordrechtGoogle Scholar
  13. 13.
    Stanley DO, Jurica GM (1972) Effective atmospheric emissivity under clear skies. J Appl Meteorol 11: 349–355CrossRefGoogle Scholar
  14. 14.
    Garratt JR (1992) The atmospheric boundary layer. Cambridge University Press, CambrigeGoogle Scholar

Copyright information

© Springer-Verlag Italia, Milano 1999

Authors and Affiliations

  • S. Ferrarese
    • 1
  • C. Cassardo
    • 2
  • A. Longhetto
    • 1
  • D. Bertoni
    • 1
  • R. Forza
    • 1
  • G. Ficca
    • 3
  • M. Pangia
    • 3
  • R. Purini
    • 3
    • 4
  1. 1.Dipartimento di Fisica GeneraleUniversitàTorinoItaly
  2. 2.Dipartimento di Scienze e Tecnologie AvanzateUniversitàAlessandriaItaly
  3. 3.lstituto di Fisica dell’AtmosferaConsiglio Nazionale delle RicercheRomaItaly
  4. 4.lstituto TalassograficoConsiglio Nazionale delle RicercheTriesteItaly

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