Seasonal dynamics of the COS and CO2 exchange of a managed temperate grassland
Gross primary productivity (GPP), the CO2 uptake by means of photosynthesis, cannot be measured directly on the ecosystem scale but has to be inferred from proxies or models.One newly emerged proxy is the trace gas carbonyl sulfide (COS).COS diffuses into plant leaves in a fashion very similar to CO2 but is generally not emitted by plants.Laborator