Journal of Applied Meteorology: Recent submissions

Now showing items 1001-1020 of 6019

    • Field Observations of the Persistence of AgI-NH4I-Acetone Ice Nuclei in Daylight 

      Super, Arlin B.; McPartland, Jack T.; Heimbach, James A. (American Meteorological Society, 1975)
      A field method of estimating the persistence of a commonly used silver iodide seeding agent is described. The method involved measurement of the AgI plume structure at two downwind distances from the ground generator(s). ...

    • A Note on the Possible Misuse of the Kolmogorov-Smirnov Test 

      Crutcher, Harold L. (American Meteorological Society, 1975)
      For univariate or one-dimensional distributions the standard tables used for the Kolmogorov-Smirnov test are valid when testing whether a set of observations are from a completely specified distribution. If one or more ...

    • Image Stretching on a Curved Surface to Improve Satellite Gridding 

      Ormsby, James P. (American Meteorological Society, 1975)
      A method for substantially reducing gridding errors due to satellite roll, pitch and yaw is given. A gimbal mounted curved screen, scaled to 1:7 500 000, is used to stretch the satellite image whereby visible landmarks ...

    • Measurement of Doppler Spectrum Parameters by Crossing Rate Methods 

      Srivastava, R. C. (American Meteorological Society, 1975)
      The effect of discrete sampling on the measurement of the root mean square frequency frms of the Doppler spectrum by the bipolar video zero-crossing rate method is discussed. It is shown that discrete sampling results in ...

    • Microphysical Analysis of an Artificial Fog through Laser Scattering 

      Tonna, G. (American Meteorological Society, 1975)
      Three fog cycles have been produced in an artificial fog chamber and their microphysical parameters determined as functions of time, by means of a laser scattering method. The results (involving the distribution functions ...

    • Thermal Analyses of the Los Angeles Smog Aerosol 

      Husar, R. B.; Shu, W. R. (American Meteorological Society, 1975)
      It has been shown by earlier studies on the formation of the Los Angeles smog aerosol, that a significant fraction of the particulate matter in the visible size range is made by secondary gas-particle conversion processes, ...

    • On Some Aspects of Omega Windfinding 

      Passi, Ranjit M. (American Meteorological Society, 1975)
      A generalized hyperbolic navigation system using Omega signals is defined. For three stations this system is shown to be equivalent to the ordinary hyperbolic navigation system. It is shown that the velocity and position ...

    • Dual-Doppler Observation of a Tornadic Storm 

      Ray, Peter S.; Doviak, R. J.; Walker, G. B.; Sirmans, D.; Carter, J.; Bumgarner, B. (American Meteorological Society, 1975)
      On 20 April 1974 a tornadic storm passed between the two NSSL Doppler radars spaced about 42 km apart. Both radars simultaneously collected Doppler data throughout the storm. Air motions synthesized from these data provide ...

    • Velocity Spectra of Vortices Scanned with a Pulse-Doppler Radar 

      Zrnic, Dusan S.; Doviak, Richard J. (American Meteorological Society, 1975)
      Doppler velocity spectra of a combined Rankine model vortex are computed by assuming a Gaussian antenna pattern, various vortex sizes, pulse volume depths, and reflectivity profiles. Both very narrow and very broad antenna ...

    • Dropwindsonde Instrumentation for Weather Reconnaissance Aircraft 

      Govind, P. K. (American Meteorological Society, 1975)
      A windfinding dropsonde instrumentation system is described, with examples of its operational use in the GARP Atlantic Tropical Experiment conducted during the summer of 1974. Deployed from an aircraft flying typically at ...

    • A Comparison of the Langer, Rosen, Nolan-Pollak and SANDS Condensation Nucleus Counters 

      Cadle, Richard D.; Langer, Gerhard; Haberl, J. B.; Hogan, A.; Rosen, James M.; Sedlacek, William A.; Wegrzyn, J. (American Meteorological Society, 1975)
      Laboratory comparisons have been made of aerosol concentrations indicated by four different types of condensation nucleus counters. Three of these counters, the Langer, Rosen, and General Electric SANDS instruments have ...

    • Omega Windfinding Systems 

      Govind, P. K. (American Meteorological Society, 1975)
      Wind-profiling systems that use the retransmission of Omega navigation signals are described. Sources of error affecting the composite performance of the Omega system are highlighted, with emphasis on their effect on ...

    • A Method for Estimating the Number of Hours Below a Selected Temperature Threshold 

      Aron, Robert H. (American Meteorological Society, 1975)
      A method is presented for fitting climatic data with linear and piecewise linear equations. A least-squares technique was used to estimate hours below a selected temperature threshold. Three empirical equations were derived ...

    • The Determination of Wind Speeds in the Boundary Layer by Monostatic Lidar 

      Eloranta, E. W.; King, J. M.; Weinman, J. A. (American Meteorological Society, 1975)
      Vertical profiles of the horizontal radial wind component in the lowest kilometer of the atmosphere have been measured remotely with lidar. Wind speed determinations were made by observing the motion of naturally occurring ...

    • The Two-Dimensional URBMET Urban Boundary Layer Model 

      Bornstein, Robert D. (American Meteorological Society, 1975)
      A two-dimensional, non-steady model of the flow over an infinitely wide, warm, rough city is presented. The model consists of two layers, a lower analytical constant-flux layer, and an upper finite-difference transition ...

    • Relative Diffusion within the Los Angeles Basin as Estimated from Tetroon Triads 

      Angell, J. K.; Dickson, C. R.; Hoecker, W. H. (American Meteorological Society, 1975)
      The Los Angeles Reactive Pollutant Project (LARPP) in the autumn of 1973 involved helicopter sampling of a volume of air ?tagged? by means of three constant volume balloons (tetroons) released simultaneously from a point ...

    • Superpressure Balloon Flights in the Tropical Boundary Layer 

      Cadet, Daniel; Ovarlez, Henri; Ovarlez, Jöelle (American Meteorological Society, 1975)
      Two series of quasi-constant-level pressurized balloons have been flown within the tropical planetary boundary layer, preliminary to a larger experiment for exploring the low-level flow over the Indian Ocean. The first ...

    • On Radar-Raingage Comparison 

      Zawadzki, I. I. (American Meteorological Society, 1975)
      Spacial smoothing by the radar beam as well as post-detection integration reduce the variability of the distribution of rainfall rate in space. It is shown that when radar data are compared with instantaneous point rainfall ...

    • Statistics of Raingage Data 

      Drufuca, G.; Zawadzki, I. I. (American Meteorological Society, 1975)
      Ten years of raingage data are processed in order to evaluate duration, average and maximum rate, mean square, variance, autocorrelation function and total amount for each rain storm. A spatial interpretation of these ...

    • Tropical Cloudiness from All-Sky Cameras on Barbados and Adjacent Atlantic Ocean 

      Holle, Ronald L.; MacKay, Steven A. (American Meteorological Society, 1975)
      Analysis of 1885 all-sky photographs was made to objectively determine low, middle, high and total cloud cover. Pictures were taken during each summer of 1963 and 1968 at one location on Barbados, and aboard a research ...