Easy Volcanic Aerosol (EVA v1.0): an idealized forcing generator for climate simulations
作者： Matthew Toohey , Bjorn Stevens , Hauke Schmidt , Claudia Timmreck
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摘要: Abstract. Stratospheric sulfate aerosols from volcanic eruptions have a significant impact on the Earth's climate. To include effects of in climate model simulations, Easy Volcanic Aerosol (EVA) forcing generator provides stratospheric aerosol optical properties as function time, latitude, height, and wavelength for given input list eruption attributes. EVA is based parameterized three-box transport simple scaling relationships used to derive mid-visible (550 nm) depth effective radius mass. Precalculated look-up tables computed Mie theory are produce wavelength-dependent extinction, single scattering albedo, asymmetry factor values. The structural form tuning its parameters chosen best agreement with satellite-based reconstruction following 1991 Pinatubo eruption, prior millennial-timescale reconstructions, including 1815 Tambora. can be models which recent observations physical understanding but internally self-consistent over any timescale choice. In addition, constructed so allow easy modification different aspects properties, order experiments help advance what important system.
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