Recent Submissions

  • Characteristic size spectra of cumulus fields observed from satellites 

    Contributor:Gifford, Malcolm Douglas; Colorado State University. Department of Atmospheric Science
    A technique is presented which allows the investigator to monitor size distributions of small scale cumulus fields using satellite data. The limitations of the technique are shown to be the resolution and quality of the ...
  • Simulated radiance patterns for Mie absorbing finite clouds 

    Contributor:Klehr, John T.; McKee, Thomas B.; Colorado State University. Department of Atmospheric Science
    Calculations were made of the scattering of sunlight from finite and infinite clouds composed of particles which were capable of both scattering and absorption. Results of Mie absorption upon shortwave irradiance values ...
  • Indications of residual effects from silver iodide released into the atmosphere 

    Contributor:Grant, Lewis O.; Colorado State University. Department of Atmospheric Science
  • Components of infrared net radiation in a mountain valley 

    Contributor:McKee, Thomas B.; Whiteman, C. D. (Charles David), 1948-; Colorado State University. Department of Atmospheric Science; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    The infrared components of the surface radiation budget in a mountain valley have been investigated theoretically. Calculations were based on a set of winter and summer atmospheric soundings specifying temperature and ...
  • Precipitating convective cloud downdraft structure : a synthesis of observations and modeling 

    Contributor:Knupp, Kevin Robert.;
    Date Submitted:1985
    This study represents a comprehensive investigation in which observations are integrated with three-dimensional cloud model results to examine the kinematic, dynamic and thermodynamic structure of downdrafts associated ...
  • Cloud-to-ground lightning polarity and environmental conditions over the central United States 

    Contributor:Kalb, Christina P.;
    Date Submitted:2007
    The majority of cloud-to-ground (CG) lightning across the United States lowers negative charge to the ground. However, recent studies have documented storms that produce an abundance of positive CG lightning. These positive ...
  • Spectral methods for limited area models 

    Contributor:Fulton, Scott R.;
    Date Submitted:1984
    This study investigates the usefulness of Chebyshev spectral methods in limited area atmospheric modeling. Basic concepts of spectral methods and properties of Chebyshev polynomials are reviewed. Chebyshev spectral methods ...
  • Simple ice phase parameterization, A 

    Contributor:Stephens, Mark Argyle;
    Date Submitted:1979
    A two variable ice parameterization was developed for use in three dimensional models of cumulonimbus clouds and mesoscale squall lines. Bulk water techniques were employed to simulate the growth and decay of snow crystals ...
  • Physical mechanisms of extra area effects from weather modification 

    Contributor:Mulvey, G. (Gerald);
    Date Submitted:1977
    One of the complexities of weather modification, namely extra area effects have long posed an opportunity for the long-term control of the earth's weather. This study investigates the physical mechanisms by which cloud ...
  • Rooftop and ground standard temperatures : a comparison of physical differences 

    Contributor:Griffith, Brian D.; McKee, Thomas B.; Colorado State University. Department of Atmospheric Science
    Accuracy and continuity of surface air temperature measurements are critical for many meteorological activities including short-term weather forecasting, warnings, and climate monitoring. In the United States and worldwide, ...
  • Formulation of a bulk boundary layer model with partial mixing and cloudiness 

    Contributor:Randall, David A., (David Allan), 1948-; Shao, Qingqiu; Colorado State University. Department of Atmospheric Science
    The classical cloud-topped mixed-layer model is generalized to allow for arbitrary fractional cloudiness and incomplete mixing. The boundary-layer depth and turbulence kinetic energy (TKE) are prognostically determined. ...
  • Observations of a midlatitude squall line boundary layer wake 

    Contributor:Hamilton, Paul J.; Johnson, Richard H. (Richard Harlan); Colorado State University. Department of Atmospheric Science
    Mesoscale pressure perturbations frequently observed with mesoscale convective systems (MCS) are examined with special emphasis on the characteristics, structure, lifecycle and driving mechanism of the "wake depression" ...
  • Gradient adjustment in an axisymmetric vortex 

    Contributor:Raghunandan, Sudama; Schubert, Wayne H.; Colorado State University. Department of Atmospheric Science
    We consider gradient adjustment in an axisymmetric vortex. From an initially unbalanced state, the final adjusted state is obtained. Initially, the geopotential is flat and the velocity field is given by the Rankine vortex. ...
  • Polynomial representation of 6.3 μm water vapor and 4.3 μm CO2 atmospheric transmissivities, A 

    Contributor:Minnis, Patrick; Cox, Stephen K.; Colorado State University. Department of Atmospheric Science
    The research reported in this paper describes a polynomial model formulated for the depiction of 6.3 μm H2o and 4.3 μm co2 transmissivities in the atmosphere. A six degree function utilizing a corrected optical path is ...
  • Analysis of the GATE aircraft pyrgeometer instrumentation, An 

    Contributor:Albrecht, Bruce A.; Cox, Stephen K.; Prokofyev, Mikhail Alekseevich; Colorado State University. Department of Atmospheric Science
    Significant differences in US and USSR aircraft measurements of hemispherical infrared irradiance were noted during GATE in-flight intercomparisons. In specific instances the downward irradiance measured by the USSR ...
  • Quasi-biennial variations in the winter-time circulation of high latitudes 

    Contributor:Reiter, Elmar R.; MacDonald, Bruce C.; Colorado State University. Department of Atmospheric Science
    In the years between 1952 and 1962 a quasi-biennial modulation became apparent in the total ozone values measured over Arosa, Switzerland, during spring. The stratospheric vortex behavior in the northern hemisphere during ...
  • Spectral characteristics of boundary layer turbulence over irregular terrain 

    Contributor:Eversole, Rae Ann; Colorado State University. Department of Atmospheric Science
    The spectral behavior of turbulence in a convectively unstable boundary layer over undulating terrain is discussed. The wind and temperature fluctuations were measured with fast response sensors mounted on the 300 m tower ...
  • Comparison of theoretical and observed radiances from non-precipitating cumulus clouds, A 

    Contributor:DeMaria, Mark; McKee, Thomas B.; Colorado State University. Department of Atmospheric Science
    Relative radiances from a theoretical model for the scattering of solar radiation by finite clouds were compared to observed radiances from the sides of non-precipitating cumulus clouds. The sides of 5 cumulus clouds ranging ...
  • Analysis and testing of a winter orographic precipitation model 

    Contributor:Branson, Mark D.; Colorado State University. Department of Atmospheric Science
    In the mid-1970's, an orographic precipitation model was developed by J. Owen Rhea in an effort to determine the ability to diagnose the effect of topography on winter precipitation for western Colorado. The model was ...
  • Effects of atmospheric variability on energy utilization and conservation. Final report of research conducted between 1 January 1981 and 30 December 1981, The 

    Contributor:Reiter, Elmar R.; Sheaffer, J. D.; Cochrane, H.; Cook, J.; Johnson, G. R.; Leong, J.; Nakagawa, T.; Colorado State University. Department of Atmospheric Science
    Our weather dependent model of energy demand for space heating has been applied to estimate total daily demand for an entire region. Preliminary tests using a simplified version of the model have yielded results with ...

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