Choi et al. (2025) Estimation of Catchment‐Scale Evapotranspiration With the Simple Method Based on the Maximum Entropy Production Principle

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Hydrological Processes
• Year: 2025
• Date: 2025-12-01
• Authors: Kwanghun Choi, Jisoo Lee, Kyungrock Paik
• DOI: 10.1002/hyp.70346

Research Groups

Not specified in the abstract.

Short Summary

This study introduces a novel Maximum Entropy Production (MEP) based method for estimating catchment-scale evapotranspiration, demonstrating its promising performance when validated against a global Penman-Monteith-Leuning product and annual water balance.

Objective

• To develop and evaluate a new Maximum Entropy Production (MEP) based approach for estimating evapotranspiration at the catchment scale, adaptable to both ground and satellite data.

Study Configuration

• Spatial Scale: Catchment scale (applied to a Korean catchment).
• Temporal Scale: Not explicitly stated for the method's output, but validation includes annual water balance.

Methodology and Data

• Models used: Maximum Entropy Production (MEP) principle (simplified MEP method), Penman-Monteith-Leuning (PML) model (for comparison).
• Data sources: Flux tower data, satellite remote sensing data, ground-measured precipitation, ground-measured runoff.

Main Results

• The proposed MEP-based approach successfully calculates all heat fluxes, including latent heat flux (evapotranspiration), at the catchment scale.
• Estimated evapotranspiration shows good agreement with a global product from the Penman-Monteith-Leuning model.
• The estimated evapotranspiration is consistent with the annual water balance derived from ground-measured precipitation and runoff.
• An appropriate temperature estimation, representative of the catchment, is identified as a priority for achieving better performance.

Contributions

• Introduces a novel expansion of the Maximum Entropy Production (MEP) principle for estimating evapotranspiration from point to catchment scale, incorporating heterogeneity.
• Provides a flexible method for catchment-scale evapotranspiration estimation that can utilize either ground measurements or satellite data, depending on availability.
• Demonstrates the MEP-based method as a promising option for estimating catchment-scale evapotranspiration in hydrology.

Funding

Not specified in the abstract.

Citation

@article{Choi2025Estimation,
  author = {Choi, Kwanghun and Lee, Jisoo and Paik, Kyungrock},
  title = {Estimation of Catchment‐Scale Evapotranspiration With the Simple Method Based on the Maximum Entropy Production Principle},
  journal = {Hydrological Processes},
  year = {2025},
  doi = {10.1002/hyp.70346},
  url = {https://doi.org/10.1002/hyp.70346}
}