Modelling evaporation with local, regional and global BROOK90 frameworks: importance of parameterization and forcing
Open Access
- 22 June 2022
- journal article
- research article
- Published by Copernicus GmbH in Hydrology and Earth System Sciences
- Vol. 26 (12), 3177-3239
- https://doi.org/10.5194/hess-26-3177-2022
Abstract
Evaporation plays an important role in the water balance on a different spatial scale. However, its direct and indirect measurements are globally scarce and accurate estimations are a challenging task. Thus the correct process approximation in modelling of the terrestrial evaporation plays a crucial part. A physically based 1D lumped soil–plant–atmosphere model (BROOK90) is applied to study the role of parameter selection and meteorological input for modelled evaporation on the point scale. Then, with the integration of the model into global, regional and local frameworks, we made cross-combinations out of their parameterization and forcing schemes to show and analyse their roles in the estimations of the evaporation. Five sites with different land uses (grassland, cropland, deciduous broadleaf forest, two evergreen needleleaf forests) located in Saxony, Germany, were selected for the study. All tested combinations showed a good agreement with FLUXNET measurements (Kling–Gupta efficiency, KGE, values 0.35–0.80 for a daily scale). For most of the sites, the best results were found for the calibrated model with in situ meteorological input data, while the worst was observed for the global setup. The setups' performance in the vegetation period was much higher than for the winter period. Among the tested setups, the model parameterization showed higher spread in performance than meteorological forcings for fields and evergreen forests sites, while the opposite was noticed in deciduous forests. Analysis of the of evaporation components revealed that transpiration dominates (up to 65 %–75 %) in the vegetation period, while interception (in forests) and soil/snow evaporation (in fields) prevail in the winter months. Finally, it was found that different parameter sets impact model performance and redistribution of evaporation components throughout the whole year, while the influence of meteorological forcing was evident only in summer months.Keywords
Funding Information
- Bundesministerium für Bildung und Forschung (FKZ 01LR 2005A)
This publication has 86 references indexed in Scilit:
- Comparison of real evapotranspiration measured by weighing lysimeters with simulations based on the Penman formula and a crop growth modelJournal of Hydrology and Hydromechanics, 2013
- Physically-based modeling of topographic effects on spatial evapotranspiration and soil moisture patterns through radiation and windHydrology and Earth System Sciences, 2012
- Global evapotranspiration over the past three decades: estimation based on the water balance equation combined with empirical modelsEnvironmental Research Letters, 2012
- Evaluation of global observations-based evapotranspiration datasets and IPCC AR4 simulationsGeophysical Research Letters, 2011
- Using long‐term water balances to parameterize surface conductances and calculate evaporation at 0.05° spatial resolutionWater Resources Research, 2010
- The Sensitivity of Latent Heat Flux to Changes in the Radiative Forcing: A Framework for Comparing Models and ObservationsJournal of Climate, 2010
- A novel approach in model-based mapping of soil water conditions at forest sitesForest Ecology and Management, 2009
- Decomposition of the mean squared error and NSE performance criteria: Implications for improving hydrological modellingJournal of Hydrology, 2009
- World Map of the Köppen-Geiger climate classification updatedMeteorologische Zeitschrift, 2006
- River flow forecasting through conceptual models part I — A discussion of principlesJournal of Hydrology, 1970