Journal of Applied Meteorology: Recent submissions

Now showing items 461-480 of 6019

    • Performance of a Dual-Range Cloud Nucleus Counter 

      Alofs, Darryl J. (American Meteorological Society, 1978)
      An instrument for measuring the concentrations of cloud condensation nuclei as a function of nucleus critical supersaturation (Se) is described. In the range 0.1% ≤ Se ≤ 1%, the instrument is operated as a vertical flow ...

    • CORRIGENDUM 

      Unknown author (American Meteorological Society, 1978)
      Correction to Volume 17, Issue 5, page 587.

    • Windvane with Optical Transducer 

      Patil, M. S.; Kutty, I. Achuthan (American Meteorological Society, 1978)
      An optical transducer designed for use with windvanes or in similar applications where angular deflection needs monitoring, is described. The transducer uses a basic 6-bit optical encoder with a seventh bit for alignment ...

    • Comments on “The Effects of Water Vapor, Ozone and Aerosol on Atmospheric Turbidity” 

      Shah, G. M. (American Meteorological Society, 1978)
      tract

    • Hailstone Size Inferred from Dents in Cold-Rolled Aluminum Sheet 

      Roos, Dvd S. (American Meteorological Society, 1978)
      The reflecting properties of microscopic corrugations on the surface of cold-rolled aluminum sheet used in hailpads led to a new technique for determining the size of hailstones. Hailstone models of various shapes and sizes ...

    • Reply 

      Malm, William C.; Walther, Eric G. (American Meteorological Society, 1978)
      tract

    • Comments on “Numerical Modeling of Advection and Diffusion of Urban Area Source Pollutants” 

      Prahm, Lars P.; Pedersen, Laust B. (American Meteorological Society, 1978)
      The moment method for accurate Eulerian advection computation, originally suggested by Egan and Mahoney (1972), was developed and tested for problems in two dimensions by Pedersen and Prahm (1973, 1974). A two-dimensional ...

    • Acoustic Doppler Sounding of Falling Snow 

      Melling, H.; List, Roland (American Meteorological Society, 1978)
      Acoustic echoes received during snowfall have been investigated using a vertically directed echo sounder. Doppler shift analysis of the echoes indicates consistent downward motion in the range 1?2 m s?1 and thus demonstrates ...

    • Modeling of Stable Air Flow over a Complex Region 

      Scholtz, M. T.; Brouckaert, C. J. (American Meteorological Society, 1978)
      A numerical model is proposed to describe the flow of stable surface air over a region of complex topographic relief and nonuniform surface temperature. A linear model is acheived by neglecting the Coriolis force and by ...

    • Toward an Objective Nephanalysis 

      Harris, Raymond; Barrett, Eric C. (American Meteorological Society, 1978)
      A method is presented for the automatic construction of a cloud-type and cloud-amount nephanalysis. The uses to which such a nephanalysis could be put are first considered, and then a combination of brightness and texture ...

    • Electric Rainfall Intensity Sensor 

      Battalino, Terry E.; Vonnegut, Bernard (American Meteorological Society, 1978)
      An instrument having a logarithmic response is described that continuously measures rates of rainfall over the range 0.3?350 mm h?1 by determining the electrical power required to evaporate the water as it arrives on an ...

    • Measuring the Effects of Surface Features on the Atmospheric Boundary Layer with Instrumented Aircraft 

      Holmes, R. M.; Wright, J. L. (American Meteorological Society, 1978)
      The influence of mesoscale features (e.g., irrigation projects, desert regions, patches of forest, cities, etc.) on the atmosphere is difficult to determine unless the sensors are very numerous or highly mobile. An ...

    • Average Diurnal Wind Variation in Southwestern Lower Michigan 

      Weber, Michael R. (American Meteorological Society, 1978)
      Three years (1974?76) of wind data for stations 1.5, 20 and 55 km from the eastern shore of Lake Michigan are analyzed to determine effects of the lake on seasonal and annual distributions of wind speed and direction. The ...

    • Some Microphysical Properties of an Ice Cloud from Lidar Observation of Horizontally Oriented Crystals 

      Platt, C. M. R.; Abshire, N. L.; McNice, G. T. (American Meteorological Society, 1978)
      Lidar observations of a winter ice cloud in the zenith gave a very high reflection but a very small depolarization. When the lidar was tilted more than 0.5° away from the zenith, the reflection amplitude fell to 3% of it's ...

    • A Comparison of Anemometer- and Lidar-Sensed Wind Velocity Data 

      Post, M. J.; Schwiesow, R. L.; Cupp, R. E.; Haugen, D. A.; Newman, J. T. (American Meteorological Society, 1978)
      Comparisons between measurements of a wind component by a Doppler lidar and by a conventional anemometer are presented. The two measurement techniques provided thirteen 15 min data sets which agreed within 0.04 m s?1 on ...

    • Values of Diffusion Coefficients Deduced from the Closing Times of Helicopter-Produced Clearings in Fog 

      Plank, Vernon G.; Spatola, Alfred A.; Johnson, David M. (American Meteorological Society, 1978)
      Values of diffusion coefficients determined from the observed closing times of nine conical-shaped clearings in fog produced by hovering helicopters at Lewisburg, WV, in September 1969 are presented. The values were ...

    • Acoustic Doppler and Angle of Arrival Wind Detection and Comparisons with Direct Measurements at a 300 m Mast 

      Peters, G.; Wamser, C.; Hinzpeter, H. (American Meteorological Society, 1978)
      Wind measurements estimated using acoustic sounding systems are compared with direct measurements obtained at a 300 m antenna mast. Different meteorological periods, including very stable to unstable stratification and ...

    • Application of Filtration Theory to Ice Nuclei Measurements 

      Roddy, A. F. (American Meteorological Society, 1978)
      The relative proportions of particles collected on the filter by the three individual mechanisms of impaction, diffusion (shallow or deep) and direct interception is shown to be important for the membrane (and Nuclepore) ...

    • Triple-Doppler Observations of a Convective Storm 

      Ray, Peter S.; Wagner, K. K.; Johnson, K. W.; Stephens, J. J.; Bumgarner, W. C.; Mueller, E. A. (American Meteorological Society, 1978)
      The advantages of three or more radars is illustrated in terms of extended areal coverage, error variance reduction and mitigation of poor sampling effects of divergence fields near the ground. Errors in the horizontal and ...

    • A Simple Procedure for Estimating Global Daily Radiation on Any Surface 

      Revfeim, K. J. A. (American Meteorological Society, 1978)
      Monthly means of measured daily radiation data from a defined horizontal site are used to estimate the prevailing atmospheric attenuation parameter. The estimation method uses the properties of the Fourier structure of ...