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  • OceanRep  (13)
  • AMS (American Meteorological Society)  (5)
  • Springer  (5)
  • Slovak Hydrometeorological Inst.  (2)
  • Taylor & Francis  (1)
  • Berlin, Heidelberg :Springer Berlin / Heidelberg,
  • 1
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    Taylor & Francis
    In:  Tellus B: Chemical and physical meteorology, 44 (2). pp. 150-159.
    Publication Date: 2018-03-21
    Description: A series of field experiments has been made to determine the occurrence of small-scale surface motions that might enhance gas exchange by surface renewal. Out of 93 runs under natural conditions on open bodies of water, only 19 gave no indication of surface streaming within a few seconds. The data cover the wind speed range up to about 6 ms-1. Above 2 or 3 ms-1, predominately line structures were observed. This points to an important r6le of surface renewal in gas exchange.
    Type: Article , PeerReviewed
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  • 2
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    Springer
    In:  Boundary-Layer Meteorology, 65 (3). pp. 249-254.
    Publication Date: 2018-03-07
    Description: Turbulence in the Planetary Boundary Layer has been a topic of research for a long time. Its theory, however, is hampered by the fact that we have fewer fundamental equations than unknowns when dealing with turbulent motions. The search for additional “laws” to match the number of equations with the number of unknowns in turbulence theory is commonly labelled the turbulent closure problem. Despite considerable effort, this problem has not been solved. There is a variety of approaches available. However, these have not converged towards a commonly accepted PBL theory, like the Monin-Obukhov similarity for the surface layer. The Working Group on Boundary Layer Dynamics and Air-Sea interaction of ICDM/IAMAP therefore invites the scientific community to discuss these problems and possible solutions. The present paper intends to stimulate such a discussion.
    Type: Article , PeerReviewed
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  • 3
    Publication Date: 2018-03-09
    Description: Turbulent fluxes have been measured in the atmospheric surface layer from a boom extending upwind from the Dutch offshore research platform Meetpost Noordwijk (MPN) during HEXMAX (Humidity Exchange over the Sea Main Experiment) in October–November, 1986. We started out to study eddy flux of water vapour, but discrepancies among simultaneous measurements made with three different anemometers led us to develop methods to correct eddy correlation measurements of wind stress for flow distortion by nearby objects. We then found excellent agreement among the corrected wind stress data sets from the three anemometers on the MPN boom and with eddy correlation measurements from a mast on a tripod. Inertial-dissipation techniques gave reliable estimates of wind stress from turbulence spectra, both at MPN and at a nearby ship. The data cover a range of wave ages and the results yield new insights into the variation of sea surface wind stress with sea state; two alternative formulas are given for the nondimensional surface roughness as a function of wave age.
    Type: Article , PeerReviewed
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  • 4
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    Springer
    In:  Boundary-Layer Meteorology, 61 (3). pp. 309-313.
    Publication Date: 2018-03-20
    Description: The effect of spray droplets in the marine surface layer on evaporation is considered. Independent evidence from energy constraints, from visibility and from sea salt content of air is used. The estimation shows that, except perhaps for hurricane wind strength, the increase of total evaporation from evaporating droplets is negligible. This is in agreement with recent experimental evidence.
    Type: Article , PeerReviewed
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  • 5
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    AMS (American Meteorological Society)
    In:  Journal of Physical Oceanography, 28 . pp. 1107-1129.
    Publication Date: 2020-08-04
    Description: On the basis of the collection of individual marine observations available from the Comprehensive Ocean–Atmosphere Data Set, major parameters of the sea state were evaluated. Climatological fields of wind waves and swell height and period, as well as significant wave height and resultant period are obtained for the North Atlantic Ocean for the period from 1964 to 1993. Validation of the results against instrumental records from National Data Buoy Center buoys and ocean weather station measurements indicate relatively good agreement for wave height and systematic biases in the visually estimated periods that were corrected. Wave age, which is important for wind stress estimates, was evaluated form wave and wind observations. The climatology of wave age indicates younger waves in winter in the North Atlantic midlatitudes and Tropics. Wave age estimates were applied to the calculations of the wind stress using parameterizations from field experiments. Differences between wave-age-based and traditional estimates are not negligible in wintertime in midlatitudes and Tropics where wave-induced stress contributes from 5% to 15% to the total stress estimates. Importance of the obtained effects for ocean circulation and climate variability is discussed.
    Type: Article , PeerReviewed
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  • 6
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    Springer
    In:  Boundary-Layer Meteorology, 69 (3). pp. 335-339.
    Publication Date: 2019-03-14
    Type: Article , NonPeerReviewed
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  • 7
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    AMS (American Meteorological Society)
    In:  Journal of Climate, 10 (11). pp. 2711-2724.
    Publication Date: 2018-07-24
    Description: Parameterization of turbulent wind stress and sensible and latent heat fluxes is reviewed in the context of climate studies and model calculations, and specific formulas based on local measurements are recommended. Wind speed is of key importance, and in applying experimental results, the differences between local and modeled winds must be considered in terms of their method of observation or calculation. Climatological wind data based on Beaufort wind force reports require correction for historical trends. Integrated long-term net turbulent and radiative heat fluxes at the sea surface, calculated from archived data, are consistent with meridional heat transport through oceanographic sections; this lends support to the methods used
    Type: Article , PeerReviewed
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  • 8
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    Slovak Hydrometeorological Inst.
    In:  In: Precipitation Measurement and Quality Control. , ed. by Sevruk, B. and Lapin, M. Proceedings of the International Symposium on Precipitation and Evaporation . Slovak Hydrometeorological Inst., Bratislava, Slovakia, pp. 157-158.
    Publication Date: 2018-03-05
    Type: Book chapter , NonPeerReviewed
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  • 9
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    Slovak Hydrometeorological Inst.
    In:  In: Precipitation measurement and quality control, v2: proceedings of the International Symposium on Precipitation and Evaporation, Bratislava, Slovakia, 1993. , ed. by Sevruk, B. and Lapin, M. Slovak Hydrometeorological Inst., Bratislava, pp. 36-41.
    Publication Date: 2018-03-05
    Type: Book chapter , NonPeerReviewed
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  • 10
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    Springer
    In:  Boundary-Layer Meteorology, 78 . pp. 247-290.
    Publication Date: 2016-09-06
    Description: During the past quarter century the study of air-sea interaction has evolved from a small branch of marine climatology to play a key role in the modelling of the coupled system of ocean and atmosphere. Knowledge of air- sea fluxes has grown, based on Monin-Obukhov similarity theory for surface boundary layers and on direct and indirect techniques of measuring the fluxes. This has been the basis for providing boundary conditions needed to couple atmospheric and oceanic circulation models that are used to forecast weather and climate. An overview of current understanding is followed by a discussion of parameterisation schemes and a chronicle of some of the experimental work that has tested theories and quantified their conclusions.
    Type: Article , PeerReviewed
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