Yuan et al. (2026) Development and Evaluation of the Conjunctive Surface‐Subsurface Process Model Version 3 (CSSPv3) at Global Scale

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Identification

• Journal: Journal of Advances in Modeling Earth Systems
• Year: 2026
• Date: 2026-07-01
• Authors: Xing Yuan, Chenyuan Li, Peng Ji, Xiazhen Xi, Shuwen Li, Yang Jiao, Yi Hao, Xin‐Zhong Liang, Qingcun Zeng
• DOI: 10.1029/2025ms005440

Research Groups

• Institute of Atmospheric Physics, Chinese Academy of Sciences
• State Key Laboratory of Earth Surface Processes and Resource Ecology
• Department of Hydrology and Water Resources Engineering, University of Natural Resources and Life Sciences Vienna

Short Summary

This study presents a novel global land surface-ecology-hydrology coupled model (CSSPv3) that integrates human activities, dynamic water-carbon couplings, and glacier freeze-thaw cycles to simulate coupled ecohydrological processes under both natural climate variability and human influence.

Objective

• Investigate the feasibility of developing a comprehensive global model that simulates coupled human-natural systems at the global scale

Study Configuration

• Spatial Scale: Global with a spatial resolution of 0.25°
• Temporal Scale: 1991–2020

Methodology and Data

• Models used: Conjunctive Surface–Subsurface Process Model version 3 (CSSPv3)
• Data sources: Observations, satellite data, reanalysis datasets

Main Results

• CSSPv3 outperforms its predecessor (CSSPv2) in simulating streamflow over human and glacier-influenced basins and evapotranspiration over irrigation fields
• The global water product generated by CSSPv3 demonstrates advantages for representing irrigation amount, streamflow, surface soil moisture, evapotranspiration, and glacier mass change compared to 26 global products

Contributions

• Development of a novel global land surface-ecology-hydrology coupled model that integrates human activities and dynamic water-carbon couplings
• Improved representation of coupled ecohydrological processes under both natural climate variability and human influence at the global scale

Funding

• National Natural Science Foundation of China (Grant No. 91837204)
• Austrian Research Promotion Agency (FFG) through the project "Hydrology for a Changing World" (Project Number: 872443)

Citation

@article{Yuan2026Development,
  author = {Yuan, Xing and Li, Chenyuan and Ji, Peng and Xi, Xiazhen and Li, Shuwen and Jiao, Yang and Hao, Yi and Liang, Xin‐Zhong and Zeng, Qingcun},
  title = {Development and Evaluation of the Conjunctive Surface‐Subsurface Process Model Version 3 (CSSPv3) at Global Scale},
  journal = {Journal of Advances in Modeling Earth Systems},
  year = {2026},
  doi = {10.1029/2025ms005440},
  url = {https://doi.org/10.1029/2025ms005440}
}