The incompatibility of ice-core CO2 data with reconstructions of biotic CO2 sources (II). The influence of CO2-fertilised growth

I. G. Enting

doi:10.3402/tellusb.v44i1.15418

The incompatibility of ice-core CO2 data with reconstructions of biotic CO2 sources (II). The influence of CO2-fertilised growth

Tellus B: Chemical and Physical Meteorology

Volume 44 (1992): Issue 1

By: I. G. Enting

Open Access

|Jan 1992

Abstract

The compatibility of ice-core CO₂ data with direct estimates of biotic CO₂ release is tested using a response function analysis that, apart from stationarity, leaves the oceanic uptake of CO₂ largely unconstrained. The role of CO₂-enhanced growth (which had not been considered in an earlier study of this type) is examined explicitly. It is found that allowing for CO₂-enhanced growth increases the discrepancy between the source estimates and the ice-core data. The proposed explanation is that some of the early increase in CO₂ concentrations reflects a recovery from a perturbation associated with the little ice-age.

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