Land–atmosphere fluxes of carbon, water, and energy are central indicators of ecosystem function and stability across natural and agricultural systems, yet their dynamics, controls, and coupling remain insufficiently understood across climate and management gradients. This limitation constrains advances in science, management, and policy.

This session focuses on ecosystem-scale processes regulating exchanges of carbon, water, and energy between the land surface and atmosphere. Their interactions shape ecosystem behavior, constrain functioning, and influence responses to environmental change from seasonal to interannual scales. We emphasize identifying key controls on fluxes and critical knowledge gaps related to water, energy, and vegetation constraints.

We encourage contributions integrating eddy covariance, field observations, remote sensing, and modeling to compare flux dynamics across ecosystems and management regimes. By advancing process-based understanding, this session aims to improve quantification of ecosystem functions, including productivity, carbon uptake, and water-use efficiency, and their responses to environmental and management change.

• A - Atmospheric Sciences
• B - Biogeosciences
• GC - Global Environmental Change