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The Planet Simulator: Green planet and desert world

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An application of the Planet Simulator is presented to estimate the maximum effect of vegetation on the Earth's climate. Four sets of sensitivity experiments are performed: (1) All vegetation related land surface parameters are changed simultaneously. (2) Only one effect of vegetation on climate is considered: albedo, surface roughness and soil hydrology. To identify the nature of vegetation-climate interaction, linear superposition and non-linear interaction of these three effects are compared. (3) The first experimental set-up is repeated but with mixed-layer ocean and thermodynamic sea-ice. (4) The effect of enhanced greenhouse gas concentrations on extreme vegetation climates is analysed repeating the preceding experimental setup with twice the CO concentration (compared to set-3).

Der Planet Simulator wird hier benutzt, um den maximalen Effekt der Vegetation auf das Erdklima abzuschätzen. Es werden vier Gruppen von Sensitivitätsexperimenten durchgeführt: (1) Alle vegetations-bezogenen Landoberflächenparameter werden simultan geändert. (2) Nur jeweils einer der Vegetationseffekte Albedo, Rauhigkeit und Bodenhydrologie wird geändert. Um die Art der Vegetation-Klima Wechsel-wirkung zu ermitteln werden die lineare Superposition und die nichtlinearen Wechselwirkungen der drei Effekte miteinander verglichen. (3) Die Experimente der ersten Gruppe werden nach Hinzufügen von Mixed-Layer-Ocean und thermodynamischem Eismodell wiederholt. (4) Die Experimente der Gruppe 3 werden mit doppelter CO2 Konzentration wiederholt.

Document Type: Research Article


Publication date: June 1, 2005

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  • Meteorologische Zeitschrift (originally founded in 1866) is the joint periodical of the meteorological societies of Austria, Germany and Switzerland. It accepts high-quality peer-reviewed manuscripts on all aspects of observational, theoretical and computational research out of the entire field of meteorology, including climatology. Meteorologische Zeitschrift represents a natural forum for the meteorological community of Central Europe and worldwide.
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