Plant phenology evaluation of CRESCENDO land surface models. Part II: Trough, peak, and amplitude of growing season

• DOI: 10.5194/egusphere-2024-4114
• Publication Date: 2025-01-30T10:51:22Z
• Authors: Daniele Peano; Deborah Hemming; Christine Delire; Yuanchao Fan; Hanna Lee; Stefano Materia; Julia E. M .S. Nabel; Taejin Park; David Wårlind; Andy Wiltshire; Sönke Zaehle
• Keywords: Trough (economics); Growing season

Abstract. Leaf area index is an important metric for characterising the structure of vegetation canopies and scaling up leaf plant processes to assess their influence on regional global climate. Earth observation estimates have increased in recent decades, providing a valuable resource monitoring changes evaluating representation land surface earth system models. The study presented here uses satellite products quantify variations seasonal timing value trough, peak, amplitude, evaluate how well these are simulated by seven models, which components state-of-the-art Results show that models simulate widespread delays, three months, troughs peaks compared products. These delays most prominent across Northern Hemisphere support findings previous studies shown similar spring out some modelled amplitude differs less than 1 m2/m2 satellite-derived more half vegetated area. This highlights relevance phenology as indicator climate, hydrology, soil, interactions, need further improvements modelling order capture correct cycles, potentially also long-term trends, carbon, water energy within