Lina M. Mercado

Abstract Estimates of carbon emissions budgets to limit global warming to 1.5 °C or 2 °C rely on the near-linear relationship between global temperature change and total CO2 emitted, known as the Transient Climate Response to cumulative CO2 Emissions (TCRE). The TCRE is determined from Earth System Models (ESMs) and is therefore sensitive to the physical and biogeochemical processes represented within them.

Abstract Elevated ground-level ozone, a result of human activity, is known to reduce plant productivity, but its influence on tropical forests remains unclear. Here we estimate how increased ozone exposure has affected tropical-forest productivity and the global carbon cycle. We experimentally measure the ozone susceptibility of various tropical tree species, and then incorporate these data into a dynamic global vegetation model.

Temperature (T) controls c. half of the temporal variation in leaf respiratory CO2 efflux (RCO2) during the night (Bruhn et al., 2022) due to a T sensitivity of RCO2, for example Q10 (i.e. the proportional change in RCO2 measured 10°C apart). Q10 is the most common expression of T sensitivity of leaf RCO2 (Supporting Information Fig.