Editing IPCC:AR6/WGI/Chapter-5 (section)

=== Biogeochemical Feedbacks on Climate Change ===

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* Improve understanding and representation in Earth system models of changes in land carbon storage and associated carbon–climate feedbacks including: better treatment of the CO <sub>2</sub> fertilization, nutrient-limitations, soil organic matter stabilization and turnover; land-use change; large-scale and fine-scale permafrost carbon; plant growth, mortality, and competition dynamics; plant hydraulics; and disturbance processes.
* Improve observations and process understanding of CH <sub>4</sub> and N <sub>2</sub> O source responses to climate, specifically from wetlands and permafrost thaw.
* Improve observations and process understanding of ocean N <sub>2</sub> O source responses to oxygen loss and climate, particularly in the oxygen minimum zones of the tropical oceans and eastern boundary upwelling regions.
* Improve understanding of the sensitivity of ocean carbon–climate feedbacks to physical processes that are not yet resolved by the ocean domain in ESMs.
* Improve understanding of the processes affecting the efficiency, climate sensitivity and emerging feedbacks in the ocean carbon cycle via the biological carbon pump to constrain future global ocean feedbacks.

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