| BACK-SCATTERING OF 3.21-CM RADIATION BY WATER BUBBLES |
15 AUG 1960 |
|
| Authors:
LOUIS J. BATTAN; Benjamin M. Herman; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
 | Calculations were made of the back-scattering of 3.21-cm waves from water bubbles ranging in diameter, D, from 0.2 to 5.0 cm. Film thicknesses between 2 and 1000 microns were considered. As the diameter increases the back-scattering crosssection shows a gradual upward trend but sharp minima occur at intervals of D which are at integral values of 1/2 wave length. As the film thickness increases there is a general increase of ... |
|
| Corona Processes in Clouds. |
18 MAR 1971 |
|
| Authors:
George A. Dawson; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| Work has continued on the basic discharge mechanisms of electrically stressed water surfaces. The purpose of the study is to elucidate the processes leading to the initiation of lightning strokes and the production of radio noise with or without lightning strokes by highly electrified clouds. In this latter phase of the investigation, measurements have been made of the sparking potential of gaps in low pressure air between two electrodes, the ... |
|
| Dual-Frequency Doppler-Lidar Method of Wind Measurement. |
22 JAN 1980 |
|
| Authors:
Wynn L. Eberhard; Richard M. Schotland; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| In this new method (DFDL) of remote wind sensing, two optical beams of unlike frequency are superimposed in the sensed volume. The velocity information is obtained from the difference in the Doppler shifts of light scattered from the two beams by aerosols moving with the air. The DFDL signal spectrum and expressions for signal-to-noise ratio are derived. Attractive characteristics of DFDL include resilience to optical imperfections of the turbulent atmosphere ... |
|
| Efficient High-Energy SHG Using a Triaxial Flashlamp-Pumped Dye Laser |
01 JAN 1980 |
|
| Authors:
Richard M. Schotland; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| THE ENERGY BALANCE OF NON-UNIFORM SOIL SURFACES, |
11 AUG 1962 |
|
| Authors:
William D. Sellers ; Carl N. Hodges; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| A ''fluxometer'' has been developed for estimat ing the fluxes of latent and sensible heat from bare soil and short grass in any type of terrain. The fluxometer consists of two polyethylene covered tunnelm long, 30 cm wide, and 6 to 12 cm high. The floor of one is exposed to the soil surface; the floor of the otir is covered with plastic, as a control. The latent and sensible ... |
|
| INTERMOLECULAR ATTRACTIONS AND SATURATION VAPOR PRESSURE, |
15 OCT 1962 |
|
| Authors:
J. E. McDonald; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| AN INVESTIGATION OF HEAT TRANSFER FROM BARE SOIL. |
APR 1967 |
|
| Authors:
W. D. Sellers; P. S. Dryden; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The paper contains data on heat transfer from bare soil under stability conditions ranging from very stable to very unstable; and a check on the accuracy of the fluxometer as an instrument for estimating the vapor flux from bare soil. (Author) |
|
| LIGHTNING PHOTOGRAPHY AND COUNTING IN DAYLIGHT, USING H ALPHA EMISSION, |
21 NOV 1964 |
|
| Authors:
Leon E. Salanave; Marx Brook; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| Narrow-band interference filters having a bandpass centered at H alpha (lambda = 6563A) have been used successfully in photographing lightning discharges in daylight and in the design of an improved lightning flash counter. Preliminary results are presented along with a discussion of design principles and possible further applications of the techniques. (Author) |
|
| A NEW DEVICE FOR THE MEASUREMENT OF STATIC ELECTRIC FIELDS. |
19 MAY 1965 |
|
| Authors:
W. H. EVANS; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The operational amplifier integrator has been adapted to the measurement of static and slowly varying electric fields. The instrument is intended for use inside and near thunderclouds; however, the design can be modified to accommodate essentially the entire VLF region to 30 kc/s. The basic principle involves detecting the derivative of the electric field and integrating the result. If the probe is connected to the input terminal of a high-gain ... |
|
| NOTE ON THE POTENTIALITIES OF CUMULONIMBUS AND HURRICANE SEEDING EXPERIMENTS, COMMENTS, |
29 DEC 1964 |
|
| Authors:
Louis J. Battan; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| THE PHOTOGRAPHIC SPECTRUM OF LIGHTNING: DETERMINATIONS OF CHANNEL TEMPERATURE FROM SLITLESS SPECTRA, |
1965 |
|
| Authors:
Leon E. Salanave; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| Investigations of the optical spectrum of lightning from 1901-1963 are reviewed. The advantages of slitless spectroscopy are emphasized, and detailed analyses of lightning based on new observations at Tuscon are presented. Criteria for qualitative estimates of relative levels of excitation from flash to flash are given. New measurements of excitation temperature (based on relative intensities of N II multiplets) lead to channel temperatures of 24,000-28,000 K, with standard errors on ... |
|
| RADIATIVE COOLING IN THE VICINITY OF INVERSIONS AND THE TROPOPAUSE, |
15 MAR 1965 |
|
| Authors:
D. O. Staley; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The distribution of radiative cooling in the vicinity of a temperature inversion in the middle troposphere is calculated for several distributions of humidity. When mixing ratios are high throughout the inversion radiative cooling acts to erode the inversion (minimum cooling at the base, maximum cooling at the top). When mixing ratio decreases rapidly upward from the inversion base most of the inversion is a region of reduced cooling, while maximum ... |
|
| RELATIONSHIP BETWEEN CLOUD BASE AND INITIAL RADAR ECHO, |
04 FEB 1963 |
|
| Authors:
Louis J. Battan; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The altitudes of the average initial percipitation echoes in convective clouds in Arizona for particular days have been compared with the altitudes of the calculated cloud base. They are found to be positively correlated. The implication of this result is that the dominant precipitation initiation mechanism in convective clouds in southern Arizona is the coalescence process. (Author) |
|
| Sources of Cloud Nuclei and Development of Remote Sensing Techniques for Cloud Parameters |
89 |
4 pages |
| Authors:
S. Twomey; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
 | Development of remote sensing methods for determining cloud and fog parameters, using passive techniques. Development and improvement of mathematical inversion procedures for remote sensing. Field and laboratory measurements of cloud nuclei. Theoretical modelling (by radiative transfer theory) of cloud layers and discrete clouds under solar illumination in the visible and near-infrared; identification therefrom of spectral features and/or differences which would enable differentiation (without direct insitu sampling) of (for example) ice ... |
|
| Sources of Cloud Nuclei and Development of Remote Sensing Techniques for Cloud Parameters |
JUN 92 |
2 pages |
| Authors:
Sean A. Twomey; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| STELLAR SCINTILLATIONS AND CLEAR AIR TURBULENCE, |
27 JUL 1962 |
|
| Authors:
Louis J. Battan; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| Using Ancillary Zero Trend Levels as a Means to Elucidate Microwave Sounding Unit Derived Tropospheric Temperature Trends Methods |
JUN 2006 |
34 pages |
| Authors:
Robb M. Randall; Benjamin M. Herman; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| Accurate assessment of temperature trends in the atmosphere is an important tool in our understanding of climate change. Currently there are three databases derived from satellite based Microwave Sounding Unit (MSU) radiance measurements. The three separate databases produce different results in the middle troposphere (termed MT) temperature trends, with two of the databases producing lower troposphere (termed LT) trends with differing results, introducing uncertainty which prevents the community from deriving ... |
|
| THE UTILIZATION OF SOLAR ENERGY IN A MULTIPLEEFFECT DESALINIZATION SYSTEM, |
05 JUN 1964 |
|
| Authors:
Carl N. Hodges; T. Lewis Thompson; John E. Groh; William D. Sellers; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The University of Arizona has developed a sea water desalinization system which can economically utilize low temperature solar energy. The system consists of a horizontal plastic-covered solar collector, a packedtower evaporator, and a finned-tube surface condenser. Incoming sea water is preheated in the surface condenser and then pumped to the solar collector where it is heated 5 to 10C. The heated sea water is pumped from the collector to the ... |
|
| A VIEW OF CLOUD PHYSICS AND WEATHER MODIFICATION IN THE SOVIET UNION, |
1965 |
|
| Authors:
Louis J. Battan; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
|
| WIND AND TEMPERATURE REPRESENTATIONS IN THE 26-MONTH OSCILLATION, |
1965 |
|
| Authors:
D. O. Staley; ARIZONA UNIV TUCSON INST OF ATMOSPHERIC PHYSICS
|
| The purpose of this communication is to present an analytical expression for the zonal wind oscillation which accurately describes the observations and which, through the thermal wind equation, also leads to an accurate analytical expression for the temperature oscillation. These expressions should prove useful in theoretical investigations of the oscillation. |
|
Reports by Corporate Author
