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Introduction: Ali Ramadhan
- First-year PhD student in climate physics
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Introduction: Ali Ramadhan First-year PhD student in climate physics - - PowerPoint PPT Presentation
Introduction: Ali Ramadhan First-year PhD student in climate physics - - PowerPoint PPT Presentation
Introduction: Ali Ramadhan First-year PhD student in climate physics 2 Warittha Panasawatwong - Masters student in atmospheric science 3 Recap: Climate change impact Retreat of Jakobshavn Glacier in Greenland 4 5 All the Factors
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Warittha Panasawatwong
- Master’s student in atmospheric science
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Recap: Climate change impact
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Retreat of Jakobshavn Glacier in Greenland
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All the Factors (and other Fs)
Radiative forcing Effective radiative forcing Forcings Feedback
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Radiative Forcing (RF)
RF = Change of net downward energy to Earth If the system is in balance, the radiative forcing would be zero. Effective radiative forcing Realistic RF with feedbacks
NASA
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Forcings: Factors impacting radiative forcing
IPCC, 2014
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Feedbacks
Feedback agents response to the forcing and may intensify the radiative forcing
- Water vapor
- Ice-albedo
- Clouds
- Biogeochemical
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Water Vapor
It is a stronger “greenhouse gas” than CO2 However, the vapor amount is not directly controlled by human, so it’s a feedback agent and not a forcing Can multiply the warming by 2-3 times greater
IPCC, 2014
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Ice-albedo
OSS foundation Snowball Earth
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Clouds
NASA Nature group
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Biogeochemical feedback
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Climate Sensitivity
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Image credit: John Marshall, MIT GCM
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Thin broken altocumulus clouds
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Cloud formation, convection, stratocumulus clouds
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→
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→
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5:30 PM: Actually making climate predictions
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6:30 PM: Climate policy and local initiatives
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Questions?
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