Oxygen isotope anomaly in tropospheric CO₂ and implications for atmospheric residence time and gross primary productivity

Plain-language summary

The study explores how the triple oxygen isotopic composition of atmospheric CO₂ can constrain the pace of oxygen-isotope recycling and the strength of biospheric exchange. It offers a route that is complementary to conventional carbon-flux approaches.

Why this work matters

• Treats atmospheric CO₂ Δ¹⁷O as an integrated process tracer.
• Links isotope exchange timescales to global carbon-cycle interpretation.
• Provides a foundation for later work refining terrestrial and oceanic productivity estimates.

This website summary is interpretive and should be checked against the final article for methods, assumptions, quantitative results, and limitations.