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  • 1
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    Operation Aurorozone: An experiment in sun/weather (1977)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Operation Aurorozone was a highly coordinated sequence of 33 rocket flights launched from Poker Flat, Alaska, in September 1976. The effects of aurorally produced X-rays on stratospheric neutral and electrical parameters was studied. The sun/weather coupling between upper and lower regions of the atmosphere is thought to be related to these middle atmospheric parameters. The results show a consistent depletion of ozone above 1 mb during three independent auroral events, with magnitudes in excess of those expected from the measured energy radiation sources. Simultaneously, enhanced conductivity changes were observed to occur in accord with the measured ionizing radiations.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: 3d NASA Weather and Climate Program Sci. Rev.; p 121-125
    Format: text
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  • 2
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    Coupling processes related to the Sun-weather problem (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: Physical mechanisms for coupling the energetics of solar activity to meteorological responses are reviewed. Although several hypotheses have been advanced, none can be said to be sufficiently complete to be applied to weather or climate prediction. Solar activity indicators potentially useful for forecasting are identified, including sunspots, solar flares, and magnetic sector boundary crossings. Additional experiments, studies, and analyses are required before Sun-weather concepts can be utilized for predicting meteorological responses.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 669-688
    Format: text
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  • 3
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    Solar weather/climate predictions (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: Solar variability influences upon terrestrial weather and climate are addressed. Both the positive and negative findings are included and specific predictions, areas of further study, and recommendations listed.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 655-668
    Format: text
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  • 4
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    Characteristics of extreme rainfall events in northwestern Peru during the 1982-1983 El Nino period (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Histograms and contour maps describing the daily rainfall characteristics of a northwestern Peru area most severely affected by the 1982-1983 El Nino event were prepared from daily rainfall data obtained from 66 stations in this area during the El Nino event, and during the same 8-month intervals for the two years preceding and following the event. These data were analyzed, in conjunction with the anlysis of visible and IR satellite images, for cloud characteristics and structure. The results present a comparison of the rainfall characteristics as a function of elevation, geographic location, and the time of year for the El Nino and non-El Nino periods.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Geophysical Research (ISSN 0148-0227); 92; 14225-14
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  • 5
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    Initiation of non-tropical thunderstorms by solar activity (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: A theory of thunderstorm initiation is proposed to account for the statistical correlation between solar activity and thunderstorm occurrence in middle to high latitudes. It is suggested that cosmic ray decreases and/or high-energy solar protons associated with active solar events enhance the electric field at low heights so that, if appropriate meteorological conditions are present during a solar event, the atmospheric electric field enhancement may be sufficient to trigger thunderstorm development. Statistical correlations and atmospheric electric effects are described. The theory could be tested if the possible forcing functions and the responding atmospheric electrical and ionic species' characteristics were measured.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Atmospheric and Terrestrial Physics; 40; Feb. 197
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  • 6
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    Initiation of non-tropical thunderstorms by solar activity (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Correlative evidence accumulating since 1926 suggests that there must be some physical coupling mechanism between solar activity and thunderstorm occurrence in middle to high latitudes. Such a link may be provided by alteration of atmospheric electric parameters through the combined influence of high-energy solar protons and decreased cosmic ray intensities, both of which are associated with active solar events. The protons produce excess ionization near and above 20km, while the Forbush decreases a lowered conductivity and enhanced fair-weather atmospheric electric field below that altitude. Consequent effects ultimately lead to a charge distribution similar to that found in thunderclouds, and then other cloud physics processes take over to generate the intense electric fields required for lightning discharge.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-TM-X-71222 , X-912-76-243
    Format: application/pdf
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  • 7
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    An experimental search for causal mechanisms in sun/weather-climatic relationships (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The paper presents a description of and preliminary results from an ongoing program designed to study mesospheric and stratospheric responses to specific corpuscular radiations induced by solar activity. Satellite data are used to map correlations between O3 variability and high-latitude energetic phenomena. Two rocket/balloon programs have already been conducted to measure local changes of O3 and electrical parameters in situ, while simultaneously studying the parent electron distributions responsible for the incoming radiations. Plans for mapping the global input of electron precipitation events from the Spacelab are also discussed.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Solar-terrestrial influences on weather and climate; Aug 24, 1978 - Aug 28, 1978; Columbus, OH
    Format: text
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