Now showing items 421-440 of 6019

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      Passi, Ranjit M. (American Meteorological Society, 1978)
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    • Beamwidth Effects on Acoustic Backscatter in the Planetary Boundary Layer 

      Neff, W. D. (American Meteorological Society, 1978)
      An ?excess attenuation? experiment is described that uses an acoustic sounder (or echosonde) operating at simultaneous frequencies of 1250 and 2500 Hz. The relative error in the received powers at these two frequencies is ...
    • Accuracy of Canadian Snow Gage Measurements 

      Goodison, Barry E. (American Meteorological Society, 1978)
      Field investigation to assess the accuracy and comparability of precipitation gage measurements of snowfall in Canada was initiated in 1973. The MSC Nipher shielded snow gage (Canadian standard gage), the Universal (Belfort) ...
    • Stochastic Models for Monthly Rainfall Forecasting and Synthetic Generation 

      Delleur, Jacques W.; Kavvas, M. Levent (American Meteorological Society, 1978)
      The Integrated Autoregressive Moving Average (ARIMA) model was applied to the average monthly rainfall time series over 15 basins located in Indiana, Illinois and Kentucky, with areas varying between 240 and 4000 mi2 ...
    • Analysis of Error in the Determination of Snow Storage for Small High Arctic Basins 

      Woo, Ming-Ko; Marsh, Philip (American Meteorological Society, 1978)
      Water balance studies in tundra regions require accurate snowfall data but weather station records often underestimate basin snow storage. However, snow storage can be determined by snow surveys conducted prior to the melt ...
    • Remote Sensing of Surface Soil Moisture 

      Schmugge, T. (American Meteorological Society, 1978)
      The unique thermal and dielectric properties of water afford two possibilities for remotely sensing the moisture content in the surface layer of the soil. Observations of the diurnal range of surface temperature, the ...
    • What the Design Engineer Needs from the Hydrometeorologist 

      Henry, William P.; Cassidy, John J. (American Meteorological Society, 1978)
      The water resources engineer is faced with three major types of problems when designing projects: 1) determination of project yield, 2) determination of project safety, and 3) determination of project scheduling. ...
    • On the Approximation of Saturation Vapor Pressure 

      Rasmussen, L. A. (American Meteorological Society, 1978)
      The saturation vapor pressure of water vapor in the atmosphere is an important variable in many meteorological processes. Numerical approximation of the dependence of this variable on temperature is necessary in the modeling ...
    • An Evaluation of Electrochemical Concentration Cell Sonde Measurements of Atmospheric Ozone 

      Geraci, Michael J.; Luers, James K. (American Meteorological Society, 1978)
      Using Dobson spectrophotometer measurements of total ozone as a comparison, an analysis of the Electrochemical Concentration Cell (ECC) ozonesonde's measurement accuracy is presented. Days of conjunctive ECC-Dobson ...
    • Forecasting Dew Duration at Pendleton, Oregon, Using Simple Weather Observations 

      Crowe, Michael J.; Melugin Coakley, Stella; Emge, Robert G. (American Meteorological Society, 1978)
      The importance of dew to agriculture, together with the absence of dew measurements at standard weather station sites, resulted in the development of predictive models for dew formation in the Umatilla River Basin, Oregon. ...
    • A Model for Predicting Synoptic Weather Types Based on Model Output Statistics 

      McCutchan, Morris H. (American Meteorological Society, 1978)
      An objective classification model was developed that can automatically predict synoptic weather types in southern California. Stepwise discriminant analysis was used to match the National Meteorological Center's Limited-area ...
    • Seasonal and Frontal Variation in Antarctic Aerosol Concentrations 

      Hogan, Austin W.; Barnard, Stephen (American Meteorological Society, 1978)
      Total aerosol concentrations have been observed twice daily at the South Pole since January 1974, using a Pollak photoelectric nucleus counter. The aerosol size distribution has been approximated using the Rich diffuser ...
    • Vapor Depletion in Processing Membrane Filters: The Effects of Chamber Parameters 

      King, W. D. (American Meteorological Society, 1978)
      The vapor field around an ice crystal growing on a membrane filter in a static diffusion chamber is modeled and the associated losses in deposition nuclei due to crystal-crystal vapor depletion calculated. The expression ...
    • Performance of an Air-Sea Interaction Buoy 

      Friehe, Carl A.; Pazan, S. E. (American Meteorological Society, 1978)
      Surface meteorological data from a large instrumented buoy moored in the North Pacific were analyzed and estimates of air-sea interaction fluxes of momentum, sensible heat, latent heat and radiation were made. Good agreement ...
    • An Ultra-Sensitive Instrument for Measuring Electric Charges on Ice Particles 

      Wishart, Edward R. (American Meteorological Society, 1978)
      By optimization of the signal-to-noise ratio of a negative-feedback charge-sensitive electrometer, a noise level of about 0.7 fC peak to peak has been obtained. Output signal pulse width above the 1% amplitude level is 50 ...
    • A Feasibility Study of Identifying Weather by Laser Forward Scattering 

      Earnshaw, K. B.; Wang, Ting-I.; Lawrence, R. S.; Greunke, R. G. (American Meteorological Society, 1978)
      The possibility of identifying weather through the observation of forward scatter of a laser beam has been investigated. Preliminary observations with a prototype instrument suggest that it is possible to distinguish clear ...
    • Mesoscale Variability of Jet Stream Winds Observed by the Sunset VHF Doppler Radar 

      Gage, K. S.; Clark, W. L. (American Meteorological Society, 1978)
      Sensitive Doppler radars have recently been developed that can routinely observe wind in the free atmosphere up to stratospheric heights. One of these, the 40 MHz Sunset radar, was used to observe the three-dimensional ...
    • Dynamic Classification of Mesoscale Cloud Patterns 

      Szejwach, G.; Desbois, M. (American Meteorological Society, 1978)
      Cumulative histograms taken from eight consecutive infrared pictures of GOES 1 are used to study the spatio-temporal evolution of mesoscale cloud patterns. A model is proposed to approximate the volume of cloud lying in a ...
    • Photogrammetry from Aircraft Nose Camera Movies 

      Warner, Charles (American Meteorological Society, 1978)
      Equations for photogrammetry from an aircraft nose camera movie are based on angles from a fixed point on the horizon toward which the aircraft is flying. The positions and dimensions of an arc of clouds occurring on day ...
    • Comments on “An Analysis of Radar Echo Systems for the Upper Midwestern United States” 

      Fenner, James H. (American Meteorological Society, 1978)
      tract