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CO2 Fertilization & Leaf Biochemistry: A-Ci Response (2D)

Interactive 2D leaf-biochemistry simulator: drive the Farquhar carboxylation model and a stomatal-conductance mass-flow model to see why rising atmospheric CO2 raises C3 crop yield while diluting grain protein, zinc and iron — C4 crops barely respond because their CO2-concentrating pump already saturates Rubisco.

Climate, Ecology & Environment2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategoryClimate, Ecology & Environment

RenderingCanvas 2D

DifficultyAdvanced

Target FPS60

ControlsChoose a crop (C3 wheat/rice/soy or C4 maize), drag the atmospheric CO2 slider (280-900 ppm, with pre-industrial/today/doubled presets), set the nitrogen fertilization level, and scrub the growing-season day slider to watch the field grow from computed leaf assimilation and see grain nutrient indices shift on a live A-vs-CO2 response chart.

greenhouse effectCO2 fertilizationFarquhar modelphotosynthesiscrop nutritionFACE trials

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This 2D companion simulator computes the nutrient dilution effect from first principles at the leaf level, using the Farquhar-von Caemmerer-Berry carboxylation model for C3 photosynthesis and a saturating PEP-carboxylase response for C4 photosynthesis, plus an independent stomatal-conductance mass-flow model for zinc and iron delivery. Drag the CO2 slider and watch the top-down crop field grow — driven by the actual computed assimilation rate, not a fitted curve — while a live A-versus-CO2 response chart shows exactly where each crop sits on its own real physiological curve.

⚙ Under the hood

A 2D leaf-biochemistry companion to the 3D crop-field simulator: drive the Farquhar carboxylation model for C3 photosynthesis and a saturating PEP-carboxylase model for C4, plus an independent stomatal-conductance mass-flow model for zinc and iron, to see why rising CO2 grows more grain while diluting its protein, zinc and iron — with a live A-versus-CO2 response curve.

greenhouse effectCO2 fertilizationFarquhar modelphotosynthesiscrop nutritionFACE trials

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install