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Category: ESS 6.1 The Earth’s Atmosphere

  • ESS 6.1.3 [AHL] Dynamic Earth’s Atmosphere

    ESS 6.1.3 [AHL] Dynamic Earth’s Atmosphere

    Learning Objectives Even when the Earth is conceptualized as a closed system, its atmosphere is influenced by a wide range of factors, including: hysical ProcessesAtmospheric physical processes encompass air circulation and the greenhouse effect. Variations in air pressure represent the fundamental driver of atmospheric motion. Beyond pressure gradient forces, wind and ocean current dynamics are…

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  • ESS 6.1.2 GHGs and Greenhouse Effect

    ESS 6.1.2 GHGs and Greenhouse Effect

    Learning Objectives Greenhouse Gasses (GHGs) and Aerosols Greenhouse Gasses The principal greenhouse gases (GHGs) present in the atmosphere include: Greenhouse gases allow the transmission of incoming short-wave solar radiation but absorb outgoing long-wave radiation, owing to differences in wavelength between the two processes. While most greenhouse gases contribute to atmospheric warming, certain components can exert…

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  • ESS 6.1.1 The Earth’s Atmosphere

    ESS 6.1.1 The Earth’s Atmosphere

    Learning Objectives The Earth’s Vertical Atmospheric Structure The atmosphere represents the transitional boundary between the Earth and outer space and plays a critical role as the outermost limit of the biosphere. Its composition and dynamic processes are fundamental to sustaining life. It is composed predominantly of nitrogen (78%) and oxygen (21%), with the remaining 1%…

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