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Update on Coupled Runs with BGC in CCSM3

Update on Coupled Runs with BGC in CCSM3. Keith Lindsay, Peter Thornton & many, many others. Outline. BGC Components being used Sequential Coupling & Progress Results What will be done next Discussion. Phytoplankton Groups Fixed C/N/P, Variable Fe/C, Chl/C, Si/C. Diazotrophs

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Update on Coupled Runs with BGC in CCSM3

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  1. Update on Coupled Runs with BGC in CCSM3 Keith Lindsay, Peter Thornton & many, many others BGC Working Group Meeting March 2006

  2. Outline • BGC Components being used • Sequential Coupling & Progress • Results • What will be done next • Discussion BGC Working Group Meeting March 2006

  3. Phytoplankton Groups Fixed C/N/P, Variable Fe/C, Chl/C, Si/C Diazotrophs (C, Chl, Fe) Picoplankton / Coccolithophores (C, Chl, Fe, CaCO3) Diatoms (C, Chl, Fe, Si) Nutrients Ammonium Nitrate Phosphate Silicate Iron ECO-C3 Marine Ecosystem Component Zooplankton (C) Dissolved Organic Material (C, N, P, Fe) Sinking Particulate Material (C, (N, P), Fe, Si, CaCO3, Dust) BGC Working Group Meeting March 2006

  4. CLM3.CN: Summary Model Structure and Fluxes Current Storage Leaf Live Stem Live Coarse Root Plant Pools Previous Storage Fine Root Dead Stem Dead Coarse Root Wood Litter (CWD) Litter Pools Litter 1 (Labile) Litter 2 (Cellulose) Litter 3 (Lignin) Soil Organic Matter Pools SOM 1 (fast) SOM 2 (medium) SOM 3 (slow) BGC Working Group Meeting March 2006

  5. Outline • BGC Components being used • Sequential Coupling & Progress • Results • What will be done next • Discussion BGC Working Group Meeting March 2006

  6. Spin-up Strategy • Reminder: Carbon inventory adjusts to climate • Spin-up Goal: find C distribution in eqm with the model climate • Three flavors of CO2: • Tracers CO2 in atm = CO2-tracer (x,y,z,t) • (diagnostic of surface fluxes) • 3+ inert tracers: net land+ocean; net land; net ocean • Biogeochemistry CO2 = CO2-tracer (x,y,sfc,t) • To drive fluxes into ocean • Sensed by terrestrial photosynthesis • Radiative CO2 = CO2-tracer (x,y,column,t) BGC Working Group Meeting March 2006

  7. Coupling and Spin-up CTracer=prog CBGC=280 CRad=280 CTracer=prog CBGC=prog CRad=280 CTracer=prog CBGC=prog CRad=prog land BGC spin-up active land/atm clim. or coupled modelSSTs O(102)y coupled physics land/ocn BGC adjustment coupled physics land/ocn/atm BGC adjustment coupled physics fully coupled carbon-climate ocean BGC spin-up active ocean O(103)y Spin-up 0 100 yr Spin-up 1 100 yr Control run BGC Working Group Meeting March 2006

  8. Outline • BGC Components being used • Sequential Coupling & Progress • Results • What will be done next • Discussion BGC Working Group Meeting March 2006

  9. BGC Working Group Meeting March 2006

  10. BGC Working Group Meeting March 2006

  11. BGC Working Group Meeting March 2006

  12. BGC Working Group Meeting March 2006

  13. BGC Working Group Meeting March 2006

  14. BGC Working Group Meeting March 2006

  15. BGC Working Group Meeting March 2006

  16. BGC Working Group Meeting March 2006

  17. BGC Working Group Meeting March 2006

  18. Outline • BGC Components being used • Sequential Coupling & Progress • Results • What will be done next • Discussion BGC Working Group Meeting March 2006

  19. BGC Working Group Meeting March 2006

  20. BGC Working Group Meeting March 2006

  21. Outline • BGC Components being used • Sequential Coupling & Progress • Results • What will be done next • Discussion BGC Working Group Meeting March 2006

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