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  • METEOROLOGY AND CLIMATOLOGY
  • 1980-1984
  • 1975-1979  (19)
  • 1960-1964
  • 1975  (19)
  • 1
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    Correlated electric and magnetic fields from lightning return strokes (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: The first broad band (1 kHz to 5 mHz) correlated measurements of electric and magnetic fields from close lightning return strokes are presented. Sample wave forms are shown for the distance range 2-200 km. The transmission line return stroke model is used to find a typical current wave shape and return stroke velocity from the experimental data, and theoretical curves are given of electric and magnetic field as a function of time for 1, 5, 10, and 100 km by using this typical current and velocity.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of Geophysical Research; 80; Jan. 20
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 2
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    Periodic variations in stratospheric-mesospheric temperature from 20-65 km at 80 N to 30 S (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: Results on large-scale periodic variations of the stratospheric-mesospheric temperature field based on Meteorological Rocket Network (MRN) measurements are reported for a long-term (12-year) mean, the quasi-biennial oscillation (QBO), and the first three harmonics of the annual wave (annual wave, semi-annual wave, and terannual wave or 4-month variation). Station-to-station comparisons are tabulated and charted for amplitude and phase of periodic variations in the temperature field. Masking and biasing factors, such as diurnal tides, solar radiation variations, mean monthly variations, instrument lag, aerodynamic heating, are singled out for attention. Models of the stratosphere will have to account for these oscillations of different periods in the thermal field and related properties of the wind fields, with multilayered horizontal stratification with height taken into account.-
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of the Atmospheric Sciences; 32; Sept
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    A study of the effects of vertical resolution and measurement errors on an iteratively inverted temperature profile (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: A direct inversion method for inverting the temperature profile from satellite-measured radiation is discussed. The nth power of the weighting function in the integral radiative-transfer equation is used as the weight in the averaging process. The vertical resolution of the inverted temperature profile and the response of the inverted temperature profile to the measurement errors are examined in terms of n. It is found that for smaller values of n, the vertical resolution and the effect of measurement errors are reduced. When n = 0, both the vertical resolution and error effect are minimum. The temperature profile is adjusted by a constant; any structure different from the initial shape cannot be resolved. This is equivalent to the case where the entire atmosphere is treated as one layer with a fixed shape of temperature profile. When n approaches infinity, both the vertical resolution and error effect are maximum. This is equivalent to the case where the entire atmosphere is divided into m (the number of spectral channels) layers. Within each layer, the temperatures are adjusted by a constant, and any structure different from the initial shape cannot be resolved. Also, the shape of the final solution is closer to the initial profile if the value of n is smaller.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of the Atmospheric Sciences; 32; Feb. 197
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    The evolution of climate (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: A quantitative evaluation is made of the climatic effects of polar wandering plus continental drift in order to determine wether this mechanism alone could explain the deterioration of climate that occurred from the warmth of Mesozoic time to the ice age conditions of the late Cenozoic. By way of procedure, to investigate the effect of the changing geography of the past on climate Adem's thermodynamic model was selected. The application of the model is discussed and preliminary results are given.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: WMO Long-term Climatic Fluctuations; p 53-64
    Format: text
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  • 5
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    Comparative estimate of the effectiveness of different algorithms for the radar classification of thunderstorms and showers (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: Several schemes for discriminating severe weather phenomena with the aid of different algorithms are examined. The schemes were tested on the same sample. A comparative estimate of the effectiveness of the different algorithms for classifying thunderstorms and showers is carried out.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Radar Meteorology (NASA-TT-F-14797); p 111-116
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    On the problem of adjusting the criterion for discriminating phenomena accompanying summertime Cb (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: The dependence is shown of the complete and simplified Y criteria on the instability energy E. Regression equations are presented of the relation of the criterial values of Y of severe hail and severe weather clouds with the variable E. The adjustment of Y according to the value of E calculated from the radiosonde data is recommended as one of the possible methods.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Radar Meteorology (NASA-TT-F-14797); p 95-104
    Format: text
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  • 7
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    High-resolution system for tropospheric wind and temperature profile measurements (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: This paper briefly describes the Jimsphere/Jimsonde system and presents some possible applications of the system. As space vehicles became larger and more sophisticated, an improved method for obtaining wind-profile data had to be found. To satisfy this need, the FPS-16 radar/Jimsphere system was developed. The Jimsphere is an aluminized mylar spherical balloon 2 m in diameter. The balloon is under superpressure and is tracked with a high-precision radar system. The development of this detailed wind-profile system was started in 1963, and the present design was established in 1964. To improve the system, a program was initiated in 1965 to obtain high-resolution temperature data simultaneously with the wind-profile data.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of Geophysical Research; 80; Sept. 20
    Format: text
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  • 8
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    Equivalent blackbody temperature of the top of a severe storm (1975)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-16
    Beschreibung: An RB-57F high-altitude aircraft equipped with Wilde RC-8 cameras and an infrared spectrometer was used in the investigations. A storm was overflown over Graham, Texas, on April 29, 1970. In the experiment, the average radiometric temperature was determined to be very near the environmental temperature near the cloud tops. However, hot and cold regions in and near the updrafts and downdrafts were found to be significantly out of equilibrium. It is recommended that caution should be exercised in determining cloud top altitude from equivalent blackbody temperature.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Journal of Applied Meteorology; 14; June 197
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    A possible correlation between maxima of the far ultraviolet solar irradiance and central meridian passages of solar magnetic sector boundaries (1975)
    In:  CASI
    Details
    Publikationsdatum: 2016-06-07
    Beschreibung: Satellite observations of the sun over almost 5 yrs show that principally two UV active longitudes have persisted over a significant portion of this observational period. A comparison between the position of solar magnetic sector boundaries and UV enhancements of the sun seems to show, at least during the year 1969, that the UV maxima tend to occur near the times when a solar sector boundary is near central meridian. An estimate of the magnitude of the variable UV solar energy input into the atmosphere resulting from the rotation of active solar longitudes is that for wavelengths less than 175 nm and down to H Lyman-alpha it exceeds the annual variation, whereas at longer wavelengths it is less.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: Possible Relationships between Solar Activity and Meteorol. Phenomena; p 79-81
    Format: application/pdf
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  • 10
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    Solar microclimatology (1975)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: It has become apparent in recent years that solar energy can be used for electric power production by several methods. Because of the diffuse nature of the solar insolation, the area involved in any central power plant design can encompass several square miles. A detailed design of these large area collection systems will require precise knowledge of the local solar insolation. Detailed information will also be needed concerning the temporal nature of the insolation and the local spatial distribution. Therefore, insolation data was collected and analyzed for a network of sensors distributed over an area of several square kilometers in Arizona. The analyses of this data yielded probability distributions of cloud size, velocity, and direction of motion which were compared with data obtained from the National Weather Service. Microclimatological analyses were also performed for suitable modeling parameters pertinent to large scale electric power plant design. Instrumentation used to collect the data is described.
    Schlagwort(e): METEOROLOGY AND CLIMATOLOGY
    Materialart: NASA-CR-148533
    Format: application/pdf
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