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The impact of the hexos programme

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Abstract

In HEXOS, a programme of coordinated laboratory, field and model studies, an international group of participants has extended the range of measurements of evaporation from the sea and has investigated the role of droplets in the transfer of water to the atmosphere. Predictions of a rapid rise in the evaporation coefficient at wind speeds above 15 m s-1 have not been substantiated. Wind stress measurements showed a relationship with wave age. New methods were developed for coping with flow distortion.

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References

  • Anderson, R. J.: 1993, ‘A Study of Wind Stress and Heat Flux Over the Open Ocean by the Inertial-Dissipation Method’, J. Phys. Oceanogr. 23, 2153–2161.

    Google Scholar 

  • Andreas, E. L.: 1989, ‘Thermal and Size Evolution of Sea Spray Droplets’, CRREL Rep. 89–11, Cold Regions Research and Engineering Laboratory, Hanover, NH, USA, 37 pp.

    Google Scholar 

  • Andreas, E. L.: 1992, ‘Sea Spray and the Turbulent Air-Sea Heat Fluxes’, J. Geophys. Res. 97, 11429–11441.

    Google Scholar 

  • Andreas, E. L.: 1994, ‘Reply’, J. Geophys. Res. 99, 14345–14350.

    Google Scholar 

  • Andreas, E. L., Edson, J. B., Monahan, E. C., Rouault, M. P. and Smith, S. D.: 1995, ‘The Spray Contribution to Net Evaporation from the Sea’, Boundary-Layer Meteorol. 72, 3–52.

    Google Scholar 

  • Ataktürk, S. S. and Katsaros, K. B.: 1989, ‘The K-Gill, a Twin Propellor-Vane Anemometer’, J. Atmos. Ocean. Tech. 6, 509–515.

    Google Scholar 

  • Blanchard, D. C.: 1983, ‘The Electrification of the Atmosphere by Particles from Bubbles in the Sea’, Progr. Oceanogr. 1, 71–202.

    Google Scholar 

  • Blanchard, D. C.: 1983, ‘The Production, Distribution, and Bacterial Enrichment of the Sea-Salt Aerosol’, in: P. S. Liss and W. G. N. Slinn (eds.), Air-Sea Exchange of Gases and Particles, Reidel, Dordrecht, pp. 407–454.

    Google Scholar 

  • Blanchard, D. C.: 1989, ‘The Size and Height to which Jet Droplets are Ejected from Bursting Bubbles in Seawater’, J. Geophys. Res. 94, 10999–11002.

    Google Scholar 

  • Bortkovskii, R. S.: 1987, Air-Sea Exchange of Heat and Moisture during Storms, Reidel, Dordrecht, xiii + 194 pp.

    Google Scholar 

  • Britter, R. E., Hunt, J. C. R. and Mumford, J. C.: 1979, ‘The Distortion of Turbulence by a Circular Cylinder’, J. Fluid Mech. 92, 269–301.

    Google Scholar 

  • DeCosmo, J.: 1991, ‘Air-sea Exchange of Momentum, Heat and Water over Whitecap Sea States’, Ph.D. Thesis, Dept. of Atmospheric Sciences, U. of Washington, Seattle, x + 212 pp.

    Google Scholar 

  • DeCosmo, J., Katsaros, K. B., Smith, S. D., Anderson, R. J. Oost, W. A., Bumke, K. and Chadwick, H.: 1996, ‘Air-Sea Exchange of Sensible Heat and Water Vapor: the HEXOS Results’, J. Geophys. Res. (in press).

  • de Leeuw, G.: 1987, ‘Near-Surface Particle Size Distributions over the North Sea’, J. Geophys. Res. 92, 14631–14635.

    Google Scholar 

  • de Leeuw, G.: 1988, ‘Survey of the CLUSE Main Experiment Grand-CLUSE’, TNO Rep. FEL 1988-43.

  • de Leeuw, G.: 1990, ‘Profiling of Aerosol Concentrations, Particle Size Distributions and Relative Humidity over the North Sea’, Tellus 42B, 342–354.

    Google Scholar 

  • Dobson, F. W., Smith, S. D. and Anderson, R. J.: 1994, ‘Measuring the Relationship between Wind Stress and Sea State in the Open Ocean in the Presence of Swell’, Atmosphere-Ocean 32, 237–256.

    Google Scholar 

  • Donelan, M. A.: 1990, ‘Air-Sea Interaction’, in B. LeMéhauté and D. M. Hanes (eds.), The Sea, Vol. 9a, Interscience, J. Wiley & Sons, New York, pp. 239–292.

    Google Scholar 

  • Donelan, M. A., Dobson, F. W., Smith, S. D. and Anderson, R. J.: 1993, ‘On the Dependence of Sea Surface Roughness on Wave Development’, J. Phys. Oceanogr. 23, 2143–2149.

    Google Scholar 

  • Edson, J. B.: 1989, ‘Lagrangian Model Simulation of the Turbulent Transport of Evaporating Jet Droplets’, Ph.D. Thesis, Dept. of Meteorology, Penn State U., University Park, Pennsylvania, 141 pp.

    Google Scholar 

  • Edson, J. B.: 1990, ‘Simulating Droplet Motion above a Moving Surface’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), ‘Modelling the Fate and Influence of Marine Spray’, Whitecap Rep. No. 7, Marine Sciences Inst., U. of Connecticut, Groton, CT, pp 84–94.

    Google Scholar 

  • Edson, J. B., Anquetin, S., Mestayer, P. G. and Sini, J. F.: 1996, ‘Spray Droplet Modeling II: An Interactive Eulerian-Lagrangian Model of Evaporating Spray Droplets’, J. Geophys. Res. 101, 1279–1293.

    Google Scholar 

  • Edson, J. B. and Fairall, C. W.: 1994, ‘Spray Droplet Modeling I: Lagrangian Model Simulation of the Turbulent Transport of Evaporating Drops’, J. Geophys. Res. 99, 25295–25311.

    Google Scholar 

  • Edson, J. B., Fairall, C. W., Larsen, S.E. and Mestayer, P. G.: 1991, ‘A Study of the Inertial-Dissipation Method for Computing Air-Sea Fluxes’, J. Geophys. Res. 96, 10689–10711.

    Google Scholar 

  • Fairall, C. W., Edson, J. B., Larsen, S. E. and Mestayer, P. G.: 1990, ‘Inertial-Dissipation Air-Sea Flux Measurements: A Prototype System using Real-Time Spectral Computations’, J. Atmos. Ocean. Tech. 7, 425–453.

    Google Scholar 

  • Fairall, C. W., Kepert, J. and Holland, G. J.: 1995, ‘The Effect of Sea Spray on Surface Energy Transports over the Ocean’, The Global Atmosphere-Ocean System 2, 121–142.

    Google Scholar 

  • Garratt, J. R.: 1977, ‘Review of Drag Coefficients over Oceans and Continents’, Mon. Weat. Rev. 105, 915–929.

    Google Scholar 

  • Geernaert, G.L., Karsaros, K. B. and Richter, K.: 1986, ‘Variation of the Drag Coefficient and its Dependence on Sea State’, J. Geophys. Res. 91, 7667–7679.

    Google Scholar 

  • Geernaert, G. L., Larsen, S. E. and Hansen, F.: 1987, ‘Measurements of the Wind Stress, Heat Flux and Turbulence Intensity during Storm Conditions over the North Sea’, J. Geophys. Res. 92, 13127–13139.

    Google Scholar 

  • Katsaros, K. B. and DeCosmo, J.: 1990, ‘Evaporation in High Wind Speeds, Sea Surface Temperature in Low Wind Speeds, Examples of Atmospheric Regulation’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), Modelling the Fate and Influence of Marine Spray, Whitecap Rep. No. 7, Marine Sciences Inst., U. of Connecticut, Groton, CT, pp 106–114.

    Google Scholar 

  • Katsaros, K. B. and DeCosmo, J.: 1993, ‘Water Vapor Flux from the Sea a: High Wind Speeds’, in: J. Lighthill, Z. Zhemin, G. Holland and K. Emanuel (eds.), Tropical Cyclone Disasters. Proc. ICSU/WMO Int'l. Symp., Beijing, China, Oct. 12–16: 1992, Peking University Press, Beijing, pp. 386–392.

    Google Scholar 

  • Katsaros, K. B., DeCosmo, J., Lind, R.J. Anderson, R. J., Smith, S. D., Kraan, C., Oost, W., Uhlig, K., Mestayer, P. G., Larsen, S. E., Smith, M. H. and De Leeuw, G.: 1994, ‘Measurements of Humidity and Temperature in the Marine Environment during the HEXOS Main Experiment’, J. Atmos. Ocean. Tech. 11, 964–981.

    Google Scholar 

  • Katsaros, K. B. and de Leeuw, G.: 1994, ‘Comment on “Sea Spray and the Turbulent Air-Sea Heat Fluxes” by E. L. Andreas’, J. Geophys. Res. 99, 14339–14343.

    Google Scholar 

  • Katsaros, K. B., Smith, S. D. and Oost, W. A.: 1987, ‘HEXOS — Humidity Exchange over the Sea, a Program for Water-Vapor and Droplet Fluxes from Sea to Air at Moderate to High Wind Speeds’, Bull. Amer. Meteorol. Soc. 68, 466–476.

    Google Scholar 

  • Large, W. G. and Pond, S.: 1981, ‘Open Ocean Momentum Flux Measurements in Moderate to Strong Winds’, J. Phys. Oceanogr. 11, 324–336.

    Google Scholar 

  • Larsen, S. E., Edson, J. B., Fairall, C. W. and Mestayer, P. G.: 1993, ‘Measurement of Temperature Spectra by a Sonic Anemometer’, J. Atmos. Ocean. Tech. 10, 345–354.

    Google Scholar 

  • Ling, S. C.: 1993, ‘Effect of Breaking Waves on the Transport of Heat and Vapor Fluxes from the Ocean’, J. Phys. Oceanogr. 23, 2360–2372.

    Google Scholar 

  • Ling, S. C. and Kao, T. W.: 1976, ‘Parameterization of the Moisture and Heat Transfer Process over the Ocean under Whitecap Sea States’, J. Phys. Oceanogr. 6, 306–315.

    Google Scholar 

  • Maat, N., Kraan, C. and Oost, W. A.: 1991, ‘The Roughness of Wind Waves’, Boundary-Layer Meteorol. 54, 89–103.

    Google Scholar 

  • Marks, R.: 1990, ‘Marine Aerosol Production and Vertical Distribution under Rain Conditions over the Sea’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), Modelling the Fate and Influence of Marine Spray, Whitecap Rep. No. 7 Marine Sciences Inst., U. of Connecticut, Groton, CT, pp. 129–136.

    Google Scholar 

  • Mestayer, P. G.: 1990, ‘Sea Water Droplet Evaporation in the CLUSE Model’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), ‘Modelling the Fate and Influence of Marine Spray’, Whitecap Rep. No. 7, Marine Sciences Inst., U. of Connecticut, Groton, CT, pp. 65–76.

    Google Scholar 

  • Mestayer, P. G., Edson, J. B., Fairall, C. W., Larsen, S. E. and Spiel, D. E.: 1989a, ‘Turbulent Transport and Evaporation of Droplets Generated at an Air-Water Interface’, in: J. C. André, J. Cousteix, F. Durst, B. E. Launder, F. W. Schmidt and J. B. Whitelaw (eds.), Turbulent Shear Flow 6, Springer-Verlag, Berlin, pp. 129–147.

    Google Scholar 

  • Mestayer, P. G., Edson, J. B., Rouault, M. P., Fairall, C. W., Larsen, S. E., de Leeuw, G., Spiel, D. E., DeCosmo, J., Katsaros, K. B., Monahan, E. C. and Schiestel, R.: 1990c, ‘CLUSE Simulations of the Vapour Flux Modification by Droplet Evaporation’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), Modelling the Fate and Influence of Marine Spray, Whitecap Rep. No. 7, Marine Sciences Inst., U. of Connecticut, Groton, CT, pp. 100–105.

    Google Scholar 

  • Mestayer, P. G., Goutail, F. and Larsen, S. E.: 1989b, ‘Improved Lyman-alpha hygrometer. Part III, Performance of a Field Version for Small-Scale Atmospheric Turbulence Measurements over the Sea’, Rev. Sci. Instrum. 60, 121–126.

    Google Scholar 

  • Mestayer, P. G. and Lefauconnier, C.: 1988, ‘Spray Droplet Generation, Transport and Evaporation in a Wind Tunnel during the Humidity Exchange over the Sea Experiments in the Simulation Tunnel’, J. Geophys. Res. 93, 572–586.

    Google Scholar 

  • Mestayer, P. G., Monahan, E. C. and Beetham, P. A. (eds.): 1990a, ‘Modelling the Fate and Influence of Marine Spray’, Proceedings of a Workshop, 6–8 June 1990, Luminy, Marseilles, France, Marine Sciences Inst., U. of Connecticut, Groton, CT, vii + 174 pp.

    Google Scholar 

  • Mestayer, P. G., Larsen, S. E., Fairall, C. W. and Edson, J. B.: 1990b, ‘Turbulence Sensor Dynamic Calibration using Real-Time Spectral Computations’. J. Atmos. Ocean. Tech. 7, 841–851.

    Google Scholar 

  • Mestayer, P. G., Van Eijk, A. M. J., de Leeuw, G. and Tranchant, B.: 1995, ‘Numerical Simulation of the Dynamics of Sea Spray over the Waves’, J. Geophys. Res. (submitted).

  • Monahan, E. C., Wilson, M. B. and Woolf, D. K.: 1988, ‘HEXMAX Whitecap Climatology: Foam Crest Coverage in the North Sea, 16 October – 23 November 1986’, in: W. A. Oost, S. D. Smith and K. B. Katsaros (eds.), Proc. NATO Advanced Workshop on Humidity Exchange over the Sea Main Experiment (HEXMAX), Analysis and Interpretation, Tech. Rep., U. of Washington, pp. 105–115.

  • Monahan, E. C., Marks, R. and Stramska, M.: 1990, ‘Quantifying Oceanic Spray Droplet Production in Terms of the Submerged Bubble Plumes and their Associated Surface Whitecaps’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), Modelling the Fate and Influence of Marine Spray, Whitecap Rep. 7, Marine Sciences Institute, U. of Connecticut, Groton, CT, pp. 29–39.

    Google Scholar 

  • Oost, W. A.: 1991, ‘Flow Distortion by an Ellipsoid and its Application to the Analysis of Atmospheric Measurements’, J. Atmos. Ocean. Tech. 8, 331–340.

    Google Scholar 

  • Oost, W. A.: 1993, ‘Errors in Eddy Correlation Measurements of Momentum Fluxes and their Correction’, J. Marine Systems 4, 171–181.

    Google Scholar 

  • Oost, W. A., Fairall, C. W., Edson, J. B., Smith, S. D., Anderson, R. J., Wills, J. A. B., Katsaros, K. B. and DeCosmo, J.: 1994, ‘Flow Distortion Calculations and their Application to Wind Stress over the Sea in HEXMAX’, J. Atmos. Ocean. Tech. 11, 366–386.

    Google Scholar 

  • Oost, W. A., Smith, S. D. and Katsaros, K. B.: 1984, ‘HEXOS Pilot Experiment, Meetpost Noordwijk: Field Project Report’, Tech. Rep., Bedford Inst. of Oceanography, 49 pp.

  • Oost, W. A., Smith, S. D. and Katsaros, K. B. (Eds.): 1988, ‘Proceedings of the NATO Advanced Workshop, Humidity Exchange over the Sea Main Experiment (HEXMAX) Analysis and Interpretation, Dellenhove, Epe, the Netherlands, April 25–29, 1988’, Tech. Rep., Dept. of Atmos. Sci., U. of Washington, Seattle, v + 243 pp.

    Google Scholar 

  • Oost, W. A., Worrell, E. H., Schaap, J. W., Van Oort, C. and Kraan, C.: 1991, ‘An Improved Version of the Pressure Anemometer’, J. Atmos. Ocean. Tech. 8, 575–584.

    Google Scholar 

  • Pruppacher, H. R. and Klett, J. D.: 1978, Microphysics of Clouds and Precipitation, Reidel, Dordrecht.

    Google Scholar 

  • Rouault, M. P.: 1989, ‘Modélisation Numérique d'une Couche Limite Unidimensionelle Stationnaire d'Embruns’, Thèse doctorale, IMST, Université Aix-Marseille, France (Nℴ d'ordre 207.208–89–42, IMST, 12 av. du Général Leelerc, 13003 Marseille, France), 143 pp.

    Google Scholar 

  • Rouault, M. P. and Larsen, S. E.: 1990, ‘Spray Droplets under Turbulent Conditions’, Risø National Laboratory Rep. Risø-M-2847.

  • Rouault, M. P., Mestayer, P. G. and Schiestel, R.: 1991, ‘A Model of Vertical Dispersion of Evaporating Spray Droplets over an Air-Water Interface’, J. Geophys. Res. 96, 7181–7200.

    Google Scholar 

  • Smith, M. H., Park, P. M., Hill, M. K., Consterdine, I. E. and Mill, C. S.: 1988, ‘Aerosol Particle and Humidity Observations on RV Frederick Russell’, in: W.A. Oost, S.D. Smith and K.B. Katsaros (eds.), Proc. NATO Advanced Workshop Humidity Exchange over the Sea Main Experiment (HEXMAX), Analysis and Interpretation, Tech. Rep., U. of Washington, pp. 135–144.

  • Smith, S. D.: 1980, ‘Wind Stress and Heat Flux over the Ocean in Gale Force Winds’, J. Phys. Oceanogr. 10, 709–726.

    Google Scholar 

  • Smith, S. D.: 1988, ‘Coefficients for Sea Surface Wind Stress’, J. Geophys. Res. 93, 15467–15472.

    Google Scholar 

  • Smith, S. D.: 1989, ‘Water Vapor Flux at the Sea Surface (Review Paper)’, Boundary-Layer Meteorol. 47, 277–293.

    Google Scholar 

  • Smith, S. D.: 1990, ‘Influence of Droplet Evaporation on HEXOS Humidity and Temperature Profiles’, in: P. G. Mestayer, E. C. Monahan and P. A. Beetham (eds.), Modelling the Fate and Influence of Marine Spray, Whitecap Rep. No. 7, Marine Sciences Inst., U. of Connecticut, Groton, CT, pp. 171–174.

    Google Scholar 

  • Smith, S. D.: 1991, ‘Some Early Results of the Humidity Exchange over the Sea Main Experiment’, in: P.-C. Chu and J.-C. Gascard (eds.), Deep Convection and Deep Water Formation in the Oceans, Elsevier Press, pp. 377–382.

  • Smith, S. D., Anderson, R. J., Oost, W. A., Kraan, C., Maat, N., DeCosmo, J., Katsaros, K. B., Davidson, K. L., Bumke, K., Hasse, L. and Chadwick, H. M.: 1992, ‘Sea Surface Wind Stress and Drag Coefficients: the HEXOS Results’. Boundary-Layer Meteorol. 60, 109–142.

    Google Scholar 

  • Smith, S. D. and Katsaros, K. B.: 1981, ‘HEXOS-Humidity Exchange over the Sea-An Experiment Proposal’, Proc. NATO Workshop, Rep. BI-R-81-17, Bedford Inst. of Oceanography, vi + 133 pp.

  • Smith, S. D., Katsaros, K. B. and Oost, W. A.: 1983, ‘HEXOS — Humidity Exchange over the Sea, Scientific Plan’, Can. Tech. Rep. Hydrogr. Ocean Sci. 21, v + 47 pp.

  • Smith, S. D., Katsaros, K. B., Oost, W. A. and Mestayer, P. G.: 1990, ‘Two major Experiments in the Humidity Exchange over the Sea Program’, Bull. Amer. Meteor. Soc. 71, 161–172.

    Google Scholar 

  • Spiel, D. E.: 1992, ‘Acoustical measurements of air bubbles bursting at a water surface: bursting bubbles as Helmholtz resonators’, J. Geophys. Res. 97, 11443–11452.

    Google Scholar 

  • Spiel, D.E.: 1994, ‘The sizes of the jet drops produced by air bubbles bursting on sea and freshwater surfaces’, Tellus 46B, 325–338.

    Google Scholar 

  • Stramska, M.: 1987, ‘Vertical Profiles of Sea Salt Aerosol in the Atmospheric Surface Layer: a Numerical Model’. Acta Geophys. Polonica 35, 87–100.

    Google Scholar 

  • Stramska, M., Marks, R. and Monahan, E. C.: 1990, ‘Bubble-mediated aerosol production as a consequence of wave breaking in supersaturated (hyperoxic) sea water’, J. Geophys. Res. 95, 18281–18288.

    Google Scholar 

  • Taylor, P. K.: 1988, ‘The IOSDL measurement programme from the RRS Frederick Russel’, in: W.A. Oost, S.D. Smith and K.B. Katsaros (eds.), Proc. NATO Advanced Workshop Humidity Exchange over the Sea Main Experiment (HEXMAX), Analysis and Interpretation, Tech. Rep., U. of Washington, pp. 124–134.

  • van Eijk, A. M. J., Mestayer, P. G., and de Leeuw, G.: 1993, ‘Conversion of the CLUSE model for applications over open ocean’, Rep. FEL-93-A035, TNO, The Hague, the Netherlands.

    Google Scholar 

  • van Eijk, A. M. J. and De Leeuw, G.: 1992, ‘Modeling Aerosol Particle Size Distributions over the North Sea’, J. Geophys. Res. 97, 14417–14429.

    Google Scholar 

  • Wills, J. A. B.: 1984, ‘HEXOS Model Tests on the Noordwijk Tower’, Rep. R 184, BMT Fluid Mechanics Ltd., Teddington, Middlesex, U.K., 56 pp.

    Google Scholar 

  • Woolf, D. K. and Monahan, E. C.: 1988, ‘Laboratory Investigations of the Influence on Marine Aerosol Production of the Interaction of Oceanic Whitecaps and Surface-Active Material’, in: P.V. Hobbs and M.P. McCormick (eds.), ‘Aerosols and Climate’, A. Deepak Publishing, Hampton, VA, pp. 1–98.

    Google Scholar 

  • Wyngaard, J. C.: 1981, ‘The Effects of Probe-Induced Flow Distortion on Atmospheric Turbulence Measurements’, J. Appl. Meteorol. 20, 784–794.

    Google Scholar 

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Smith, S.D., Katsaros, K.B., Oost, W.A. et al. The impact of the hexos programme. Boundary-Layer Meteorol 78, 121–141 (1996). https://doi.org/10.1007/BF00122489

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