Journal of Applied Meteorology: Recent submissions

Now showing items 1861-1880 of 6019

    • Rocketsonde Repeatability and Stratospheric Variability 

      Miller, Alvin J.; Schmidlin, Francis J. (American Meteorological Society, 1971)
      In an attempt to separate instrument system ?noise? from actual stratospheric variability, six pairs of meteorological rocketsondes (Datasonde instruments) were launched on 20 June 1969, with five pairs being released at ...

    • Radar/Balloon Measurement of Vertical Air Motions Between the Surface and 15 km 

      De Mandel, R. E.; Krivo, S. J. (American Meteorological Society, 1971)
      An estimate of the vertical wind component up to an altitude of 15 km is derived from FPS-16 radar/Jimsphere ascent-rate measurements. The method involves removing ascent-rate profile variations which are not associated ...

    • A Comparison of Aircraft and Jimsphere Wind Measurements 

      Treddenick, D. S. (American Meteorological Society, 1971)
      Upper level wind profiles obtained from a Doppler equipped aircraft and from radar tracking of a Jim-sphere balloon are compared. Simultaneous measurements were made by them methods on 19 and 20 February 1970. The measurements ...

    • Comparisons of Water Vapor Profiles Obtained by Radiosonde and Laser Backscatter 

      Cooney, John A. (American Meteorological Society, 1971)
      Vertical profiles of atmospheric absolute humidity were obtained between 500 and 2000 m by monitoring an appropriate portion of the Raman component of laser backscatter and were compared with radiosonde data taken at ...

    • Tests on Ventilation Rates and Other Factors in Radiosonde Performance 

      Harney, Patrick J. (American Meteorological Society, 1971)
      Concern for the performance of temperature sensitive elements on radiosondes led to these tests on ventilation rates in a special wind tunnel. Results with sondes in current use show large reductions in flow through the ...

    • Dynamical Analysis of Outflow from Tornado-Producing Thunderstorms as Revealed by ATS III Pictures 

      Ninomiya, K. (American Meteorological Society, 1971)
      Detailed synoptic and dynamic analyses of outflow from tornado-producing thunderstorms of 23 April 1968 were made by using conventional rawinsonde data combined with ATS III pictures. It was found that the pre-existing ...

    • Hailfall Characteristics Related to Crop Damage 

      Changnon, Stanley A. (American Meteorological Society, 1971)
      Collection of crop loss assessment values adjacent to halipads has allowed a comparative investigation to determine which hailfall characteristics were related to the degree of loss to wheat, corn and soybean crops in ...

    • Snowfall from a Heavily Seeded Cloud 

      Holroyd, Edmond W.; Jiusto, James E. (American Meteorological Society, 1971)
      Few documented cases exist to demonstrate that highly convective supercooled clouds can be completely glaciated or overseeded. By ?overseeding? we imply a sufficient concentration of ice nuclei to accommodate all the water ...

    • Measurements of Cloud Emissivity in the 8–13 μ Waveband 

      Allen, J. R. (American Meteorological Society, 1971)
      To determine the emissivities of clouds, measurements of the zenith radiative intensity in the atmospheric window were made for 20 months. The height of the cloud base was measured by stereophotography for high and medium ...

    • On the Condensation of Buoyant, Moist, Bent-Over Plumes 

      Wigley, T. M. L.; Slawson, P. R. (American Meteorological Society, 1971)
      The theory of growth of dry plumes is extended to include the effects of moisture in both the vapor and liquid forms. A relation determining the point at which a moist plume first condenses is derived. Numerical solutions ...

    • Radar Attenuation by Wet Ice Spheres 

      Battan, Louis J. (American Meteorological Society, 1971)
      Calculations have been made of the radar reflectivity and attenuation produced by exponential distributions of dry and wet ice spheres. Appropriate data are presented in the form of tables and graphs. It is shown that ...

    • Probing of Atmospheric Motion by Airborne Pulse-Doppler Radar Techniques 

      Lhermitte, Roger M. (American Meteorological Society, 1971)
      The paper discusses the use of airborne pulse-Doppler techniques for the sensing of particle motion inside convective storms. A downward-looking beam method providing observations of particle vertical velocity distributed ...

    • Doppler Radar Observation of Wind Structure in Snow 

      Boucher, Roland J.; Ottersten, Hans (American Meteorological Society, 1971)
      Sinusoidal variations in the longitudinal speed of the wind in the planetary boundary layer are observed with a C-band multiple-gate Doppler radar using snow as a wind tracer. These undulations in the horizontal wind are ...

    • On the Accuracy of a Precipitation Coverage Index Computed from Radar Reports 

      Bunting, James T.; Conover, John H. (American Meteorological Society, 1971)
      The Radar Index (RI) is presented as a statistic used to study convective activity in the summer monsoon over southeast Asia. The RI is defused simply as the percent coverage of echo within 50 n mi of the radar. A computer ...

    • The Eddy-Correlation Technique of Evaporation Measurement Using a Sensitized Quartz-Crystal Hygrometer 

      Hicks, B. B.; Goodman, H. S. (American Meteorological Society, 1971)
      A system is described for the measurement of the atmospheric flux of water vapor near the surface, using a quartz-crystal oscillator as humidity sensor (as described by Gjessing et al.) and based on the Fluxatron technique. ...

    • Wind Effect on the Evaporation Rate 

      Seginer, Ido (American Meteorological Society, 1971)
      A model of an evaporating surface is proposed which consists of four levels: a lower boundary, a vapor source, an interface with the atmosphere, and an upper level. There are resistances to heat and vapor flow between these ...

    • The Radiation Budget for Polluted Layers of the Urban Environment 

      Atwater, Marshall A. (American Meteorological Society, 1971)
      A radiation model is used to examine the possible effects that the presence of pollutants, particularly aerosols and nitrogen dioxide, have on the thermal structure of the urban atmosphere. Discontinuities in the lapse ...

    • Urban Influence on Nighttime Airflow Estimated from Tetroon Flights 

      Angell, J. K.; Pack, D. H.; Dickson, C. R.; Hoecker, W. H. (American Meteorological Society, 1971)
      Constant-volume balloon (tetroon) flights tracked by radar across Columbus, Ohio, in March 1969, illustrate the effect of a city on the nighttime airflow at heights of 100?200 m. On the average, the urban influence on wind ...

    • On the Relationship of Variance Spectra of Temperature to the Large-Scale Atmospheric Circulation 

      Dickson, Robert R. (American Meteorological Society, 1971)
      Power spectra of daily mean surface air temperature at eight locations in the United States were computed for each season of a 21-year period (March 1943?February 1969). After partitioning the spectra into what appear to ...

    • Further Experiments in Localized Numerical Weather Prediction 

      Spar, Jerome (American Meteorological Society, 1971)
      Local numerical forecasts generated by interpolation from the National Meteorological Center primitive equation model are evaluated for the 1969?70 winter season in the eastern United States. A marked under-prediction of ...