Summary
A previously determined model [9], based on the theoretical knowledge of the physical modifications of solar energy by the atmosphere and its transformation at the surface, has been used to determine the monthly distribution of net radiation in southern California at a topoclimatic scale. Parameters utilized in the equations were cloud cover, cloud type, surface albedo, precipitable water vapor, surface temperature, slope angle, slope orientation, elevation, and urban sinog. A remarkable contrast was found between relatively high net radiation values for the littoral and coastal mountains and those of the lower values of the arid eastern parts of southern California.
Zusammenfassung
Zur Bestimmung der monatlichen Verteilung der Strahlungsbilanz in Südkalifornien unter Berücksichtigung des Geländeverlaufs wurde ein vorgängig entwickeltes Modell [9] benützt, das auf der theoretischen Kenntnis der physikalischen Beeinflussung der Sonnenenergie durch die Atmosphäre und ihrer Umwandlung am Erdboden beruht. Die in den Gleichungen verwendeten Parameter sind Wolkenbedeckung, Wolkenform, Erdbodenalbedo, Gesamtwasserdampfgehalt, Erdoberflächentemperatur, Neigung und Orientierung des Geländes, Höhe über Meer und Stadtdunst. Es wurde ein bemerkenswerter Unterschied zwischen relativ hohen Strahlungsbilanzwerten für die Küste und die Küstenberge und niedrigeren Werten für die östlichen Teile Südkaliforniens gefunden.
Résumé
Pour déterminer la répartition mensuelle du bilan de radiation dans le sud de la Californie en tenant compte des conditions topographiques, on utilise un modèle développé récemment [9]. Ce dernier repose sur la connaissance théorique des modifications physiques que subit l'énergie solaire en traversant l'atmosphère et de sa transformation au sol. Les paramètres utilisés dans ces équations sont: la nébulosité, la forme des nuages, l'albédo du sol, le contenu total de l'air en vapeur d'eau, la température à la surface du sol, la pente et l'orientation du sol, l'altitude et la brume urbaine. On a ainsi trouvé une différence marquée entre les valeurs relativement élevées du bilan de radiation valables sur la côte et les régions montagneuses côtières et les faibles valeurs que l'on rencontre dans les parties orientales de la Californie du sud.
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The aid ofJohn L. Place, University of California, Los Angeles, during the earlier stages of the computations is acknowledged.
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Terjung, W.H., Kickert, R.N., Kochevar, R.J. et al. The annual march of the topoclimatic spatial patterns of net radiation in southern California. Arch. Met. Geoph. Biokl. B. 17, 21–50 (1969). https://doi.org/10.1007/BF02248858
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DOI: https://doi.org/10.1007/BF02248858