Journal of Applied Meteorology: Recent submissions

Now showing items 2121-2140 of 6019

    • Simultaneous Radar, Aircraft and Meteorological Investigations of Clear Air Turbulence 

      Glover, Kenneth M.; Boucher, Roland J.; Ottersten, Hans; Hardy, Kenneth R. (American Meteorological Society, 1969)
      The results of simultaneous studies of clear air turbulence (CAT) in the lower 15 km of the atmosphere by multi-wavelength radar, jet aircraft and special rawinsondes at the JAFNA radar facility at Wallops Island, Va., are ...

    • Radar Observations of a Gravitational Wave in Clear Air Near the Tropopause Associated with CAT 

      Hicks, J. J. (American Meteorological Society, 1969)
      A wavelike structure near the tropopause has been observed with a sensitive radar system. The structure occurred in clear air and showed evidence of various stages of development and breakdown. The echo structural features ...

    • A Preliminary Study of Atmospheric Effects on the Sonic Boom 

      Herbert, G. A.; Hass, W. A.; Angell, J. K. (American Meteorological Society, 1969)
      Atmospheric effects on sonic booms generated by bomber and fighter aircraft are investigated through analysis of more than 4000 sonic-boom pressure traces obtained from a 40-microphone grid at Edwards Air Force Base, Calif., ...

    • A 500-kHz Sferics Range Detector 

      Kohl, Douglas A. (American Meteorological Society, 1969)
      The high probability of detecting physically limited sferics pulse energies during some part of the overall lightning process was used in the development of a narrow band receiver-detector range sensor. An rf amplifier and ...

    • Some Polarization Measurements of the Reflected Sunlight from Desert Terrain near Tucson, Ariz. 

      Fernald, Frederick G.; Herman, Benjamin M.; Curran, Robert J. (American Meteorological Society, 1969)
      Measurements were taken of the polarization of solar radiation reflected from the desert terrain 18 mi SW of Tucson. The polarimeter was mounted in an aircraft and flown from 1000?2000 ft above the surface. Results showed ...

    • Hail Measurement Techniques for Evaluating Suppression Projects 

      Changnon, Stanley A. (American Meteorological Society, 1969)
      Collection of hail data that will provide meaningful measures of the results of hail suppression projects varies according to five factors, including the geographical-climatic site, the statistical design, and the goal of ...

    • “Hail” on a Mountain in Arizona 

      Battan, Louis J.; Wilson, David S. (American Meteorological Society, 1969)
      Visual observations on several mountain peaks in the Santa Catalina Mountains in southeastern Arizona reveal that solid ice particles commonly fall from cumulonimbus clouds in the summer. Hailstones having diameters >2 cm ...

    • The Effect of Rainfall on a Large Steelworks 

      Ogden, T. L. (American Meteorological Society, 1969)
      Port Kembla steelworks, on the New South Wales coast, produced 3.6 million tons of steel in 1967. Relative to background, its output of freezing nuclei (at ?15.8C) is probably negligible, but its output of condensation ...

    • Continuous Ice Nuclei Measurements Made During Pulsed Cloud Seeding 

      Robertson, Charles E. (American Meteorological Society, 1969)
      In a cloud seeding program, it is necessary to know what meteorological conditions are controlling the travel of artificial ice nuclei. While it is obvious that they will travel with the air currents, it is difficult to ...

    • Cloud Modification by Helicopter Wakes 

      Plank, Vernon G.; Spatola, Alfred A. (American Meteorological Society, 1969)
      Helicopter wake effects on stratus and stratocumulus clouds are described. Holes and troughs were created in such clouds with dimensions several hundred feet across. The velocities and penetration distances of the downwash ...

    • Results of a Randomized Cloud Seeding Experiment in South Dakota 

      Dennis, A. S.; Koscielski, Alexander (American Meteorological Society, 1969)
      A 3-year randomized crossover seeding experiment has been conducted in South Dakota to test effects of artificial nucleation upon supercooled convective clouds of spring and early summer. The associated rainfall observations ...

    • Aging of Silver Iodide-Sodium Iodide Generator Effluent in Moist and Dry Air 

      Blair, Donald N.; Davis, Briant L. (American Meteorological Society, 1969)
      The effect of storage of AgI-NaI aerosol particles in moist and dry air upon the efficiency of nucleation of such particles has been investigated. Samples were obtained from a standard solution generator and tested in an ...

    • Spatial Correlations of Storm, Monthly and Seasonal Precipitation 

      Huff, F. A.; Shipp, W. L. (American Meteorological Society, 1969)
      One approach to defining sampling requirements for precipitation measurement networks is through statistical correlation methods. Data from three dense raingage networks in Illinois were used with this method on rainfall ...

    • Local Wind Circulation on the Slopes of Mauna Loa 

      Mendonca, Bernard G. (American Meteorological Society, 1969)
      Measurements, using a captive balloon system, of the diurnal local winds at the Mauna Loa Observatory showed a 600 m deep upslope flow and 55 m deep downslope flow. Using a model, the mass flux of air in the region of the ...

    • Atmospheric Diffusion of Argon-41 From the CIRUS Stack at Trombay 

      Sachdev, R. N.; Nadgir, S. B. (American Meteorological Society, 1969)
      Real-time downwind measurements of A41 from the CIRUS stack at Trombay have been made at one of the micrometeorological stations, using the differential beta-gamma counting method. Simultaneous measurements of the standard ...

    • Rise of Buoyant Gases Released from Intermittent Sources 

      Tait, G. W. C. (American Meteorological Society, 1969)
      Intermittent release of contaminated buoyant gases is considered as a means of reducing pollution of surface air. A model is proposed for large instantaneous point sources which predicts the height of rise to be greater ...

    • Low Turbulence Flow in the Planetary Boundary Layer and Its Relation to Certain Air Pollution Problems 

      Slade, David H. (American Meteorological Society, 1969)
      Tall tower wind data are used to illustrate some of the features of low turbulence (smooth) flow aloft. Information is presented on spatial and temporal variations of such flows. The relevance of low turbulence flow to ...

    • A Simple Instrument for the Field Measurement of Turbulent Diffusion Flux 

      Stanhill, G. (American Meteorological Society, 1969)
      A new instrument is described which enables integrated values of water and carbon dioxide flux to be obtained under field conditions. The principle of operation is the Thornthwaite-Holzman equation for turbulent diffusion ...

    • Convective Motion as Indicated by Visual Tracers 

      Berry, Edwin X. (American Meteorological Society, 1969)
      Time-lapse photographs taken of a visual tracer laid in horizontal lines at several levels, one above the other, show convective motion of the air in a vertical plane. Through minor improvements in technique a three-dimensional ...

    • Development and Use of an Airborne Air Marker for Atmospheric Research 

      Nielsen, Klaus W.; Berry, Edwin X. (American Meteorological Society, 1969)
      Common motor oil is injected into the exhaust manifold of an aircraft where it is vaporized, and then mixes into the cold outside air to condense into a dense oil fog. This air marking technique has been used in atmospheric ...