Unit 9_simple_c_cycle
e2361d13-f709-4836-ac28-5d09f5b0f93f
isee systems, inc.
Stella Professional
0
5000
0.2
620 {Gt C -- 1 Gt=1e15 g -- this is the presumed 1880 pre-industrial value}
Soil_Respiration
Plant_Respiration
volcanoes
human_emissions
Photosynthesis
oc–atm_exchange
610 {610 Gt C -- 1 Gt=1e15 g -- from IPCC, 1994}
Photosynthesis
Litter_fall
Plant_Respiration
1580
Litter_fall
Soil_Respiration
runoff
LAND_BIOTA*(30/610)
29.4*(SOIL/INIT(SOIL))
60*(pCO2_atm/280)
Photosynthesis*0.5
SOIL*(.6/INIT(SOIL))
14 + 2.5*LN(pCO2_atm/280)/LN(2) {°C relative to pre-industrial temp of 14; this relationship produces a 2.5 ° warming for each doubling of pCO2}
280*(SURF_OCEAN/INIT(SURF_OCEAN))
ATMOSPHERE*(280/620) {290 ppm is the 1880 pre-industrial level, corresponding to 620 GT C}
4000
human_emissions
884.391 {Gt C}
ocean_mixing
oc–atm_exchange
runoff
net_transfer
38000 {Gt C}
Bio_Pump
ocean_mixing
Sedimentation
3 {Gt C}
net_transfer
Bio_Pump
10*(OCEAN_BIOTA/INIT(OCEAN_BIOTA))
10*(OCEAN_BIOTA/INIT(OCEAN_BIOTA))
100*(DEEP_OCEAN/INIT(DEEP_OCEAN))-90.6*(SURF_OCEAN/INIT(SURF_OCEAN)) {this is upwelling minus downwelling}
.278 {Gt C/yr/ppm -- the observationally-derived rate constant}
0.6*(DEEP_OCEAN/38000)
k_ao*(pCO2_atm-pCO2_oc)
0.6
TIME
0,0,8,8,0,0,0,0
DEEP_OCEAN
Sedimentation
pCO2_oc
oc–atm_exchange
LAND_BIOTA
Litter_fall
pCO2_atm
Photosynthesis
oc–atm_exchange
DEEP_OCEAN
ocean_mixing
pCO2_atm
global_temp
SURF_OCEAN
ocean_mixing
SOIL
runoff
OCEAN_BIOTA
net_transfer
ATMOSPHERE
pCO2_atm
OCEAN_BIOTA
Bio_Pump
Photosynthesis
Plant_Respiration
k_ao
oc–atm_exchange
SOIL
Soil_Respiration
SURF_OCEAN
pCO2_oc
pCO2_atm