• Seeding-Opportunity Recognition in Winter Orographic Clouds 

  Hill, Geoffrey E. (American Meteorological Society, 1979)

  Detailed measurements of supercooled cloud water, precipitation, cloud-top temperature and vertical air motion in winter orographic clouds are used to develop criteria for the seedability of those clouds. Winter orographic ...
• Trajectory Analysis of Summertime Sulfate Concentrations in the Northeastern United States 

  Samson, Perry J. (American Meteorological Society, 1979)

  This paper presents a technique for quantifying the relationships between observed concentrations of atmospheric sulfate aerosol and their corresponding upstream history of sulfur dioxide emissions, wind speed and mixing ...
• Some Turbulence and Diffusion Parameter Estimates within Cooling Tower Plumes Derived from Sodar Data 

  Coulter, R. L.; Underwood, K. H. (American Meteorological Society, 1979)

  Temperature and velocity fluctuations within a cooling tower plume in stable conditions at the Keystone power plant in Pennsylvania have been measured by use of a calibrated sodar. Monostatic and bistatic systems probed ...
• Wind Speeds in Two Tornadic Storms and a Tornado, Deduced from Doppler Spectra 

  Zrnic, Dusan; Istok, Michael (American Meteorological Society, 1979)

  Doppler spectra of a tornado were collected with a radar having a large unambiguous velocity range, ±91 m s?1. Thus for the first time a presentation of nonaliased spectra was possible, showing direct measurement of radial ...
• Comments on “Automated 12–36 Hour Probability Forecasts of Thunderstorms and Severe Local Storms” 

  Weiss, Steven J.; Doswell, Charles A.; Ostby, Frederick P. (American Meteorological Society, 1979)

  No abstract available.
• Reply 

  Reap, Ronald M.; Foster, Donald S. (American Meteorological Society, 1979)

  No abstract available.
• CORRIGENDA 

  Unknown author (American Meteorological Society, 1979)

  Correction to Volume 19, Issue 3, page 256.
• Experimental Verification of the Linear Relationship between IR Extinction and Liquid Water Content of Clouds 

  Gertler, Alan W.; Steele, Roger L. (American Meteorological Society, 1979)

  The IR extinction of clouds has been measured with a CO2 laster transmissometer (? = 10.6 ?m). Using an established linear relationship (based on the Ch?lek approximation to the Mie theory) between extinction and liquid ...
• Variations in Precipitation Parameters between Drought and Nondrought Periods in Texas and Some Implications for Cloud Seeding 

  Flynn, Michael S.; Griffiths, John F. (American Meteorological Society, 1979)

  An analysis of the possible differences among various rainfall parameters during drought and nondrought periods was undertaken for 12 Texas stations. The division of monthly rainfall amounts into quintiles served as the ...
• On Estimating Hail Frequency and Hailfall Area 

  Long, Alexis B. (American Meteorological Society, 1979)

  Probabilistic and statistical concepts are used to examine how the number of hail observing sites within a region affects the accuracy of estimates of 1) the mean point frequency of hail within the region, 2) the overall ...
• The Energy Balance of a Tropical Evergreen Forest 

  Pinker, R. T.; Thompson, O. E.; Eck, T. F. (American Meteorological Society, 1979)

  This study presents the radiation climate of a dry tropical forest. It is based on measurements of incoming and outgoing shortwave and longwave radiation at the top and floor of the forest canopy during five months spanning ...
• A New Aspect of the Vertical Incidence Doppler Radar Spectrum of Ice Particle Fallspeeds 

  Passarelli, Richard E.; Srivastava, Ramesh C. (American Meteorological Society, 1979)

  Unlike raindrops, ice particles of the same mass can have different fallspeeds, due to variations in the particle shape and bulk density. (This is an extension of the popular axiom that no two snowflakes are alike.) This ...
• Clear-Sky Direct-Beam Solar Radiation Versus Altitude: A Proposal for Standard Soundings 

  Lowry, William P. (American Meteorological Society, 1979)

  The author reexamines Klein's (1948) quantitative statements relating clear-sky direct-beam solar radiation to altitude for the lower troposphere, which are of the form (transmissivity) = B + A log (altitude). Klein's ...
• Errors in Wind Fields Derived from Multiple-Doppler Radars: Random Errors and Temporal Errors Associated with Advection and Evolution 

  Clark, T. L.; Harris, F. I.; Mohr, C. G. (American Meteorological Society, 1979)

  Simulations from a time-dependent model of moist convection have been used to assess magnitudes of errors in the estimates of derived wind fields from the synthesis of data from a network of Doppler radars. The two types ...
• Application of a Cloud Model to Cooling Tower Plumes and Clouds 

  Orville, Harold D.; Hirsch, John H.; May, Laurence E. (American Meteorological Society, 1979)

  A steady-state, one-dimensional cloud model has been modified to simulate the growth of plumes (both wet and dry) and clouds from natural and forced draft cooling towers. The modifications to the cloud model are discussed ...
• The Hailpad: Materials, Data Reduction and Calibration 

  Long, Alexis B.; Matson, Richard J.; Crow, Edwin L. (American Meteorological Society, 1979)

  This paper reports on work carried out in the National Hail Research Experiment (NHRE) on hailpad materials, on procedures for reducing hailpad data, and on hailpad calibration. A recommendation is made for a pad constructed ...
• An Improved Method for Obtaining the Water Content Values of Ice Hydrometeors from Aircraft and Radar Data 

  Plank, Vernon G.; Berthel, Robert O.; Barnes, Arnold A. (American Meteorological Society, 1979)

  Uncertainty analyses and operational experience at the Air Force Geophysics Laboratory (AFGL) have shown that for single samples of ice hydrometeors, the factor ? = M/(??), where M (spectral liquid water content) and Z ...
• A Balloonborne Instrument for the Measurement of Vertical Profiles of Supercooled Liquid Water Concentration 

  Hill, Geoffrey E.; Woffinden, Duard S. (American Meteorological Society, 1979)

  A vibrating wire placed in the humidity duct of a standard U.S. rawinsonde is used to measure vertical profiles of the concentration of supercooled liquid water in clouds. The natural frequency of vibration varies according ...
• The Testing of a Limited-Data Corn Yield Model for Large-Area Corn Yield Predictions 

  Keener, M. E.; Runge, E. C. A.; Klugh, B. F. (American Meteorological Society, 1979)

  A general philosophy of examining models used in agriculture is outlined in four steps: 1) the examination of the assumptions of the model, 2) sensitivity analysis, 3) tests of reasonableness using available data, and 4) ...
• Transport of Asian Desert Aerosol to the Hawaiian Islands 

  Shaw, Glenn E. (American Meteorological Society, 1979)

  A cloud of aerosol with optical thickness τ ≈ 0.18 (500 nm wavelength), passed over the Hawaiian Islands from late April to early May 1979. Vertical profiles, taken by evaluating the optical extinction coefficient by sun ...

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