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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied climatology 37 (1986), S. 22-28 
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung Die Verlust- und Aufspeicherraten der globalen Eisdecke werden als klimatische Parameter angenommen, welche auf astronomische Einwirkung reagieren und das globale Eisvolumen als das Integral der Differenz dieser beiden Raten. Die spezielle Form der klimatischen Wirkfunktion ist so, daß sie proportional zur jahreszeitlich bedingten gesamten Strahlung ist. Nimmt man die Fourierreihe der zehn wichtigsten Perioden mit länger als zehn Jahrtausenden in der Bergerformulierung des Milankovitchkonzeptes als die bestimmende Funktion an, so ergibt die analytische Integration eine Zeitreihe, welche mit etwa 0,51 mit der Rekonstruktion des Eisvolumens aus den Sauerstoffisotopen der vergangenen halben Million Jahre korreliert und die Maxima und Minima optimal trifft. Das Integrationsverfahren löst Teile der frühen Schwierigkeit bei Eisvolumenspektren, die zu großes Gewicht auf die niedrigsten Frequenzen legten.
    Notes: Summary The wastage and accumulation rates of the global ice sheets are taken to be climatic parameters, responding to astronomical forcing, and the global ice volume to be the integral of the difference of these two rates. The particular form of the climatic response function is that it is proportional to the seasonality of irradiance totals. Taking the Fourier series of the ten major periodicities longer than ten millenia in the Berger formulation of the Milankovitch concept as the forcing function, analytical integration yields a time series that correlates about 0.51 with the ice volume reconstruction from oxygen isotopes for the past half million years, and matches the maxima and minima optimally. The integration process resolves part of the previous difficulty of ice volume spectra with too much power in the lowest frequencies.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1986-01-01
    Print ISSN: 0177-798X
    Electronic ISSN: 1434-4483
    Topics: Geosciences , Physics
    Published by Springer
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  • 3
    Publication Date: 2006-04-12
    Description: By using the most complete available records of direct beam radiation and volcanic eruptions, an historical analysis of the role of the latter in modulating the former was made. A very simple fallout and dispersion model was applied to the historical chronology of explosive eruptions. The resulting time series explains about 77 percent of the radiation variance, as well as suggests that tropical and subpolar eruptions are more important than mid-latitude eruptions in their impact on the stratospheric aerosol optical depth. The simpler climatic models indicate that past hemispheric temperature can be stimulated very well with volcanic and CO2 inputs and suggest that climate forecasting will also require volcano forecasting. There is some evidence that this is possible some years in advance.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA. Langley Research Center Atmospheric Effects and Potential Climatic Impact of the 1980 Eruptions of Mt. St. Helens; p 191-202
    Format: text
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