Chapter 2 Radiation budget Ra=F-F个=qn+aFo-Foa Rg=F-F个=(1-)(D+S)Fo Rs=F-F个=(1-a)D+S)+qa-F∞ 2021/2/22 Assessment of climate/change impacts 11 of 71
Chapter 2 2021/2/22 Assessment of climate/change impacts 11 of 71 Radiation budget Ra = F - F = qa + a·Fo - Fa Rg = F - F =(1-)(D+S)-Fo Rs = F - F =(1-)(D+S)+qa-F
Chapter 2 Radiative forcing for climate change GHGs effects · Tropospheric ozone Tropospheric Aerosols Land-use Change(Albedo Effect) Solar Forcing 2021/2/22 Assessment of climate/change impacts 12of7
Chapter 2 2021/2/22 Assessment of climate/change impacts 12 of 71 Radiative forcing for climate change • GHGs effects • Tropospheric Ozone • Tropospheric Aerosols • Land-use Change (Albedo Effect) • Solar Forcing
Chapter 2 Radiation budget incoming: 100%o reflected 26%+490=30% absorbed:20%+50%=70% outgoing:(38%+26%)+6%=70% 2021/2/22 Assessment of climate/change impacts 13of71
Chapter 2 2021/2/22 Assessment of climate/change impacts 13 of 71 Radiation budget • incoming: 100% • reflected: 26%+4%=30% • absorbed: 20% +50% =70% • outgoing: (38%+26%)+6%=70%
Chapter 2 Observed global radiation budget Seasonal change Comparison of absorbed solar radiation: observed vs calculated Global radiation budget for atmosphere earth system(Rs) 2021/2/22 Assessment of climate/change impacts 14of71
Chapter 2 2021/2/22 Assessment of climate/change impacts 14 of 71 Observed global radiation budget Seasonal change • Comparison of absorbed solar radiation: observed VS calculated • Global radiation budget for atmosphereearth system(Rs)
Chapter 2 Observed global radiation budget (2) Spatial distributions Atmosphere-earth system Reflectivity Absorbed solar radiation(short wave) Emitted/terrestrial radiation(Foo)(long wave) Radiation budget(rs: annual average Dec-Jan Jun-Aug 2021/2/22 Assessment of climate/change impacts
Chapter 2 2021/2/22 Assessment of climate/change impacts 15 of 71 Observed global radiation budget (2) Spatial distributions • Atmosphere-earth system Reflectivity Absorbed solar radiation (short wave) Emitted/terrestrial radiation(F) (long wave) Radiation budget(Rs): annual average Dec-Jan Jun-Aug