Now showing items 641-660 of 1291

    • ATMOSPHERIC DIFFUSION FROM VOLUME SOURCES 

      Gifford, Frank (American Meteorological Society, 1955)
      Under the assumption of homogeneous and isotropic turbulence, an equation is obtained for diffusion from an instantaneous volume source that has spherical symmetry but otherwise a virtually arbitrary initial distribution. ...
    • THE MEASUREMENT OF CLOUD LIQUID-WATER CONTENT BY RADAR 

      Donaldson, Ralph J. (American Meteorological Society, 1955)
      The depth to which a liquid-water cloud may be detected has been computed as a function of liquid-water content for radars at wavelengths of 0.86, 1.25 and 3.2 cm, with use of Atlas' relationship for Z versus liquid-water ...
    • TURBULENCE THEORY APPLIED TO LARGE-SCALE ATMOSPHERIC PHENOMENA 

      Hutchings, J. W. (American Meteorological Society, 1955)
      An outline is given of a preliminary attempt to apply the methods which have proved serviceable in the treatment of small-scale turbulence to the wider problem of large-scale turbulence in the atmosphere. In particular, ...
    • ON THE BAROCLINE STRUCTURE OF THE WESTERLIES 

      McIntyre, D. P. (American Meteorological Society, 1955)
      In view of the limitations of synoptic analysis, a new statistical method has been developed and applied to the study of the structure of the westerlies. Preliminary investigations of the wind structure over central Canada ...
    • THE ROLE OF MELTING SNOW IN THE ATMOSPHERE 

      Bemis, Alan C. (American Meteorological Society, 1955)
      No Abstract Available
    • PATTERNS OF CHANGE OF PRECIPITATION IN THE UNITED STATES 

      Dingle, A. Nelson (American Meteorological Society, 1955)
      Because of its relative insensitivity to changes of station location and to such natural phenomena as volcanic activity, precipitation is a promising weather element for the study of secular changes of the general circulation. ...
    • A METHOD FOR THE INTEGRATION OF THE RADIATIVE-TRANSFER EQUATION 

      Plass, Gilbert N.; Fivel, Daniel I. (American Meteorological Society, 1955)
      The equations for radiative transfer are integrated exactly for a band of spectral lines which do not overlap and for an Elsasser band. The result of the two-fold integration of the absorption over frequency and over the ...
    • THE NET ELECTRIFICATION OF NATURAL CLOUD DROPLETS AT THE EARTH'S SURFACE 

      Webb, Willis L.; Gunn, Ross (American Meteorological Society, 1955)
      Samples of more than 35 natural clouds were passed through a special centrifuge and an ion filter in such a way that the free electricity on the droplets and on the air could be measured separately. The net charge on typical ...
    • AERIAL SAMPLING BY HELICOPTER: A METHOD FOR STUDY OF DIFFUSIEON PATTERNS 

      Gartrell, F. E.; Carpenter, S. B. (American Meteorological Society, 1955)
      The trend toward larger and larger steamelectric plants, using fuels with high sulfur content, is resulting in increased attention to studies of diffusion of power-plant stack gases in the atmosphere. This article describes ...
    • WIND STRESS ON THE SEA 

      Francis, J. R. D. (American Meteorological Society, 1955)
      No Abstract Available
    • THE BACK-SCATTERING COEFFICIENT OF A SPHERICAL HOMOGENEOUS MIXTURE OF ICE AND AIR AT WAVELENGTHS BETWEEN 1 AND 10 CENTIMETERS 

      Johnson, John C. (American Meteorological Society, 1955)
      No Abstract Available
    • WINDS AND TEMPERATURES TO FORTY KILOMETERS 

      Conover, W. C.; Wentzien, C. J. (American Meteorological Society, 1955)
      During the years 1948 to 1952, radiosonde flights were made from Belmar, New Jersey, to altitudes of 40 km. Seasonal averages of the temperature and wind data obtained from these flights indicate a definite seasonal trend ...
    • POWER SPECTRA OF THE EDDY-VELOCITY COMPONENTS 

      Cramer, Harrison E.; Record, Frank A. (American Meteorological Society, 1955)
      Power spectra of the eddy-velocity components have been determined at four levels within the layer from 2 to 12 meters under varying conditions of mean wind speed, trajectory and thermal stability. A filtering technique ...
    • EXTENSION OF THE LAWS OF THERMODYNAMICS TO TURBULENT SYSTEMS 

      Blackadar, Alfred K. (American Meteorological Society, 1955)
      The energy equations applicable to the mean state of a turbulent fluid are reviewed, and a concept of the relative flux of turbulent kinetic energy is defined. It is shown that such irreversible processes as the decay of ...
    • DIFFUSION OF MATTER EMITTED FROM A LINE SOURCE IN A NON-ISOTROPIC TURBULENT FLOW 

      Fleishman, B. A.; Frenkiel, F. N. (American Meteorological Society, 1955)
      Turbulent diffusion from an infinite line source in a homogeneous, stationary, non-isotropic turbulent flow is studied. Spatial mean-concentration distributions are determined as functions of the statistical characteristics ...
    • A CENSUS OF CUMULUS-CLOUD HEIGHT VERSUS PRECIPITATION IN THE VICINITY OF PUERTO RICO DURING THE WINTER AND SPRING OF 1953-1954 

      Byers, Horace R.; Hall, Robert K. (American Meteorological Society, 1955)
      The analysis of fifteen cloud-census flights confirms the common existence of warm precipitation from trade-wind cumuli. A probability that over-water clouds of certain vertical developments will contain precipitation is ...
    • HEAT BUDGET OF A WATER COLUMN, AUTUMN, NORTH ATLANTIC OCEAN 

      Jung, Glenn H.; Gilcrest, Robert A. (American Meteorological Society, 1955)
      The recent availability of extensive ocean and weather data makes it possible to re-examine the heat budget of an ocean water-column over a short time interval, taking into account more completely than before the effects ...
    • TEST OF SIGNIFICANCE IN A VERIFICATION PROGRAM 

      Gringorten, Irving I. (American Meteorological Society, 1955)
      The article is limited to consideration of a forecasting program in which a forecaster chooses as his forecast one event out of a finite group of well-defined, mutually exclusive events, for example, ?rain? or ?no rain.? ...
    • TIDAL WIND FIELDS IN THE ATMOSPHERE 

      Stolov, Harold L. (American Meteorological Society, 1955)
      After evaluation of the surface wind system associated with the stationary wave, the total tidal wind field on the surface is developed from the total semidiurnal pressure oscillation. Two major criticisms of the linear ...
    • THE MOLECULAR DIFFUSIVE RATE OF CHANGE OF COMPOSITION IN THE ATMOSPHERE 

      Chapman, Sydney (American Meteorological Society, 1955)
      The atmosphere appears to be (within narrow limits) uniform in composition, as regards its permanent constituents, up to a height of at least 60 kilometers. The vertical variations of pressure and temperature produce ...