What question did this study set out to answer?

This research aims to estimate CO2 fluxes and analyze the δ13C isotopic ratios in the atmosphere using a synthesis inversion technique.

January 1, 1995Tellus B

A synthesis inversion of the concentration and δ13C of atmospheric CO2

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Randomized trial estimates CO2 fluxes and isotopic ratios in the atmosphere, suggesting key contributors to uncertainty.

This research aims to estimate CO2 fluxes and analyze the δ13C isotopic ratios in the atmosphere using a synthesis inversion technique.
Utilized the GISS atmospheric tracer transport model to fit CO2 and 13CO2 observations.
Analyzed data from two distinct periods: 1986-1987 and 1989-1990.
Estimated uncertainties by assessing various data influences on the global CO2 budget.
Global oceanic versus biotic exchange constrained primarily by CO2 and 13CO2 trends.
Unconstrained estimates of air-sea flux are sensitive to fitted data choices, within ≈ 1.2 Gt C y-1.
Regional source and sink constraints contribute minimally to global budget uncertainty reduction.

Enting et al. (1995) studied this question.

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