Wang et al. (2025) Influence of Tidal Inundation and Salinity on the Generalized Complementary Relationship for Evaporation in a Mangrove Ecosystem

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

Identification

• Journal: Journal of Geophysical Research Atmospheres
• Year: 2025
• Date: 2025-12-30
• Authors: Yanhua Wang, Liming Wang, Ruikun GOU, Han Yin, Weizhi Lu, Xiaowei Cui, Yuchen Meng, Yanzheng Yang, Guanghui Lin
• DOI: 10.1029/2025jd045078

Research Groups

Research groups focused on environmental science, hydrology, or coastal ecosystem studies, likely based in China given the study location.

Short Summary

This study evaluated the Sigmoid Generalized Complementary (SGC) equation for estimating evaporation in a subtropical mangrove forest, finding it accurately captures evaporation dynamics and revealing how tidal inundation influences surface moisture parameters, while salinity negatively correlates with monthly evaporation at higher concentrations.

Objective

• To evaluate the Sigmoid Generalized Complementary (SGC) equation for estimating evaporation in a subtropical mangrove forest, specifically investigating the effects of tidal inundation time fraction (TI) and salinity (SAL) on both evaporation and SGC model parameters.

Study Configuration

• Spatial Scale: A subtropical mangrove forest in southern China.
• Temporal Scale: A decade (approximately 10 years) of data.

Methodology and Data

• Models used: Sigmoid Generalized Complementary (SGC) equation.
• Data sources: Eddy covariance measurements and meteorological data.

Main Results

• The SGC equation accurately captured diurnal and seasonal evaporation dynamics, achieving high performance (R² = 0.94, RMSE = 11.98 W m⁻² daily) with best-fit parameters α = 1.13 and b = ∞.
• Tidal inundation time fraction (TI) had limited impact on the evaporation magnitude but significantly affected parameter 'b', causing it to transition from land-like to open-water characteristics as inundation increased.
• Salinity did not significantly affect the SGC parameters but was negatively correlated with monthly evaporation, especially when exceeding approximately 15 g/kg.
• Diurnal evaporation was primarily controlled by net radiation rather than water level or salinity.
• No water-energy decoupling was observed at the seasonal scale.

Contributions

• Demonstrates the robustness and applicability of the SGC framework in intertidal environments.
• Offers a new perspective for modeling evaporation in intertidal zones.
• Provides new insights into the interactions between hydrological drivers, salinity stress, and evaporation in mangroves.

Funding

Not available in the provided abstract.

Citation

@article{Wang2025Influence,
  author = {Wang, Yanhua and Wang, Liming and GOU, Ruikun and Yin, Han and Lu, Weizhi and Cui, Xiaowei and Meng, Yuchen and Yang, Yanzheng and Lin, Guanghui},
  title = {Influence of Tidal Inundation and Salinity on the Generalized Complementary Relationship for Evaporation in a Mangrove Ecosystem},
  journal = {Journal of Geophysical Research Atmospheres},
  year = {2025},
  doi = {10.1029/2025jd045078},
  url = {https://doi.org/10.1029/2025jd045078}
}