Measurements of the Skin Temperature on Small Lakes

Robert Kurzeja Savannah River National Laboratory, Aiken, South Carolina

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Malcolm Pendergast SMP Enterprises, Martinez, Georgia

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Eliel Villa-Aleman Savannah River National Laboratory, Aiken, South Carolina

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Abstract

An apparatus to measure the skin temperature and related variables on inland lakes is described. The apparatus is a transparent frame with sensors to measure the skin and bulk water temperature, the wind velocity, and the air temperature and humidity for periods of several days. The sensors are positioned within 1 m of the air–water interface and sample boundary layer variables every 2 s.

Data for a 4-h period at midday are discussed, and the vertical fluxes of heat and momentum are calculated using bulk relationships for 1- and 5-min periods. It is shown that the measured water temperature at a depth of 1 cm correlates well with estimates based on the bulk heat flux.

The skin temperature depression is calculated from the bulk heat and momentum fluxes and is found to vary between 0.4° and 0.5°C for the 4-h period and was in good agreement with the measured values. However, the calculated and measured skin temperatures were poorly correlated for both the 1- and 5-min averages. This is believed to be due to departures from the steady-state assumptions or to deficiencies in the theory.

Corresponding author address: Dr. Robert Kurzeja, Savannah River National Laboratory, Westinghouse Savannah River Co., Building 773-A, Aiken, SC 29808. Email: robert.kurzeja@srs.gov

Abstract

An apparatus to measure the skin temperature and related variables on inland lakes is described. The apparatus is a transparent frame with sensors to measure the skin and bulk water temperature, the wind velocity, and the air temperature and humidity for periods of several days. The sensors are positioned within 1 m of the air–water interface and sample boundary layer variables every 2 s.

Data for a 4-h period at midday are discussed, and the vertical fluxes of heat and momentum are calculated using bulk relationships for 1- and 5-min periods. It is shown that the measured water temperature at a depth of 1 cm correlates well with estimates based on the bulk heat flux.

The skin temperature depression is calculated from the bulk heat and momentum fluxes and is found to vary between 0.4° and 0.5°C for the 4-h period and was in good agreement with the measured values. However, the calculated and measured skin temperatures were poorly correlated for both the 1- and 5-min averages. This is believed to be due to departures from the steady-state assumptions or to deficiencies in the theory.

Corresponding author address: Dr. Robert Kurzeja, Savannah River National Laboratory, Westinghouse Savannah River Co., Building 773-A, Aiken, SC 29808. Email: robert.kurzeja@srs.gov

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  • Barton, I. J., Minnett P. J. , Maillet K. A. , Donlon C. J. , Hook S. J. , Jessup A. T. , and Nightingale T. J. , 2004: The Miami 2001 infrared radiometer calibration and intercomparison. Part II: Shipboard results. J. Atmos. Oceanic Technol., 21 , 268283.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Blanc, T. V., 1987: Accuracy of bulk method determined flux, stability, and sea surface roughness. J. Geophys. Res., 92 , 38673876.

  • Donlon, C. J., and Nightingale T. J. , 2000: Effect of atmospheric radiance errors in radiometric sea-surface skin temperature measurements. Appl. Opt., 39 , 23872392.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Emery, W. J., Castro S. , Wick G. A. , Schlussel P. , and Donlon C. , 2001: Estimating sea surface temperature from infrared satellite and in situ temperature data. Bull. Amer. Meteor. Soc., 82 , 27732785.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Fairall, C. W., Bradley E. F. , Godfrey J. S. , Wick G. A. , Edson J. B. , and Young G. S. , 1996a: Cool-skin and warm-layer effects on sea surface temperature. J. Geophys. Res., 101 , 12951308.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Fairall, C. W., Bradley E. F. , Rogers D. P. , Edson J. B. , and Young G. S. , 1996b: Bulk parameterization of air-sea fluxes for Tropical Ocean-Global Atmosphere Coupled-Ocean Atmosphere Response Experiment. J. Geophys. Res., 101 , 37473764.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Kaimal, J. C., and Finnigan J. J. , 1994: Atmospheric Boundary Layer Flows. Oxford University Press, 289 pp.

  • Mahrt, L., Vickers D. , Edson J. , Sun J. , Hojstrup J. , Hare I. , and Wilczak J. , 1998: Heat flux in the coastal zone. Bound.-Layer Meteor., 86 , 421446.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Schluessel, P., Emery W. J. , Grassi H. , and Mammen T. , 1990: On the bulk-skin temperature difference and its impact on sea surface temperature. J. Geophys. Res., 95 , 1334113356.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Wick, G. A., Emery W. J. , Kantha L. H. , and Schlussel P. , 1996: The behavior of the bulk − skin sea surface temperature difference under varying wind speed and heat flux. J. Phys. Oceanogr., 26 , 19691988.

    • Crossref
    • Search Google Scholar
    • Export Citation
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