How does gross primary production uncertainty impact evapotranspiration prediction within the carbon–water coupled model?

Key Points

• Evapotranspiration predictions are affected by uncertainties in gross primary production, highlighting model limitations.
• The study reveals that variations in gross primary production significantly influence water-cycle predictions.
• Analysis of a carbon-water coupled model indicates the need for improved predictive modeling to address uncertainties.
• Understanding these uncertainties may enhance climate model accuracy and water management strategies.