scholarly journals A one-parameter Budyko model for water balance captures emergent behavior in darwinian hydrologic models

2014 ◽  
Vol 41 (13) ◽  
pp. 4569-4577 ◽  
Author(s):  
Dingbao Wang ◽  
Yin Tang
Keyword(s):  
Water Balance ◽  
Emergent Behavior ◽  
Hydrologic Models

scholarly journals On the lack of robustness of hydrologic models regarding water balance simulation: a diagnostic approach applied to three models of increasing complexity on 20 mountainous catchments

2014 ◽  
Vol 18 (2) ◽  
pp. 727-746 ◽  
Author(s):  
L. Coron ◽  
V. Andréassian ◽  
C. Perrin ◽  
M. Bourqui ◽  
F. Hendrickx
Keyword(s):  
Water Balance ◽  
Structural Complexity ◽  
Testing Procedure ◽  
Flow Volume ◽  
Mean Flow ◽  
Hydrologic Models ◽  
Systematic Analysis ◽  
Mountainous Catchments ◽  
Numerical Tools ◽  
Simulation Errors

Abstract. This paper investigates the robustness of rainfall–runoff models when their parameters are transferred in time. More specifically, we propose an approach to diagnose their ability to simulate water balance on periods with different hydroclimatic characteristics. The testing procedure consists in a series of parameter calibrations over 10 yr periods and the systematic analysis of mean flow volume errors on long records. This procedure was applied to three conceptual models of increasing structural complexity over 20 mountainous catchments in southern France. The results showed that robustness problems are common. Errors on 10 yr mean flow volume were significant for all calibration periods and model structures. Various graphical and numerical tools were used to investigate these errors and unexpectedly strong similarities were found in the temporal evolutions of these volume errors. We indeed showed that relative changes in simulated mean flow between 10 yr periods can remain similar, regardless of the calibration period or the conceptual model used. Surprisingly, using longer records for parameters optimisation or using a semi-distributed 19-parameter daily model instead of a simple 1-parameter annual formula did not provide significant improvements regarding these simulation errors on flow volumes. While the actual causes for these robustness problems can be manifold and are difficult to identify in each case, this work highlights that the transferability of water balance adjustments made during calibration can be poor, with potentially huge impacts in the case of studies in non-stationary conditions.

scholarly journals Modelling Wetland Growing Season Rainfall Interception Losses Based on Maximum Canopy Storage Measurements

2017 ◽  
Author(s):  
Wojciech Ciężkowski ◽  
Tomasz Berezowski ◽  
Małgorzata Kleniewska ◽  
Sylwia Szporak-Wasilewska ◽  
Jarosław Chormański
Keyword(s):  
Water Balance ◽  
Potential Evapotranspiration ◽  
Growing Season ◽  
Meteorological Conditions ◽  
Natural Wetland ◽  
Hydrologic Models ◽  
Rainfall Interception ◽  
Wetland Ecosystems ◽  
Weight Method

This study estimates rainfall interception losses from natural wetland ecosystems based on maximum canopy storage measurements. Rainfall interception losses play an important role in water balance, which is crucial in wetlands, and has not yet been thoroughly studied in relation to this type of ecosystem. Maximum canopy storage was measured using the weight method. Based on these measurements, daily values of interception losses were estimated and then used to calculate long term interception losses based on precipitation and potential evapotranspiration data for the 1971–2015 period. Depending mainly on the number of days with precipitation, the results show that total interception losses for the growing season as well as monthly interception losses are around 13% of gross rainfall. This value is similar to the values observed for some forests. Hence, interception losses should not be disregarded in hydrologic models of wetlands, especially because data trends in meteorological conditions (mainly number of days with precipitation) show that interception losses will increase in the future if those trends stay the same.

Choosing an arbitrary calibration period for hydrologic models: How much does it influence water balance simulations?

2021 ◽  
Vol 35 (2) ◽  
Author(s):  
Daniel T. Myers ◽  
Darren L. Ficklin ◽  
Scott M. Robeson ◽  
Ram P. Neupane ◽  
Alejandra Botero‐Acosta ◽  
...  
Keyword(s):  
Water Balance ◽  
Hydrologic Models ◽  
Calibration Period

scholarly journals On the lack of robustness of hydrologic models regarding water balance simulation – a diagnostic approach on 20 mountainous catchments using three models of increasing complexity

2013 ◽  
Vol 10 (9) ◽  
pp. 11337-11383 ◽  
Author(s):  
L. Coron ◽  
V. Andréassian ◽  
C. Perrin ◽  
M. Bourqui ◽  
F. Hendrickx
Keyword(s):  
Water Balance ◽  
Structural Complexity ◽  
Testing Procedure ◽  
Rainfall Runoff ◽  
Mean Flow ◽  
Hydrologic Models ◽  
Systematic Analysis ◽  
Mountainous Catchments ◽  
Numerical Tools ◽  
Relative Differences

Abstract. This paper investigates the robustness of rainfall–runoff models when their parameters are transferred in time. More specifically, we studied their ability to simulate water balance on periods with different hydroclimatic characteristics. The testing procedure consisted in a series of parameter transfers between 10-yr periods and the systematic analysis of mean-volume errors. This procedure was applied to three conceptual models of different structural complexity over 20 mountainous catchments in southern France. The results showed that robustness problems are common. Errors on 10-yr-mean flows were significant for all three models and calibration periods, even when the entire record was used for calibration. Various graphical and numerical tools were used to show strong similarities between the shapes of mean flow biases calculated on a 10-yr-long sliding window when various parameter sets are used. Unexpected behavioural similarities were observed between the three models tested, considering their large differences in structural complexity. While the actual causes for robustness problems in these models remain unclear, this work stresses the limited transferability in time of the water balance adjustments made through parameter optimization. Although absolute differences between simulations obtained with different calibrated parameter sets were sometimes substantial, relative differences in simulated mean flows between time periods remained similar regardless of the calibrated parameter sets.

scholarly journals Water balance component analysis of a spring catchment of western Nepal

2021 ◽  
Vol 31 (1) ◽  
pp. 23-32
Author(s):  
J. K. K.C. ◽  
S. Dhaubanjar ◽  
V. P. Pandey ◽  
R. Subedi
Keyword(s):  
Water Balance ◽  
Water Resource Management ◽  
Hydrologic Modeling ◽  
Isotopic Analysis ◽  
Spring Discharge ◽  
Climate Scenarios ◽  
Hydrologic Models ◽  
Water Balance Components ◽  
Spring Catchment ◽  
Spring System

Springs in the mountains and hills are getting affected by both climatic and non-climatic changes. Hydrologic models are used to simulate the response of spring systems to the changes; however, only a limited number of studies using the hydrologic modeling approach have been accomplished on studying springs and spring-dominated watersheds in Nepal. This research aimed at understanding changing hydrological processes through hydrologic modeling in a spring catchment. A micro-catchment named 'Sikharpur' of West Seti watershed of Nepal was selected to get insights into the process influencing the spring system. The RRAWFLOW models with gamma distribution and time variant IRFs were calibrated and validated for the catchment to get the best fit model. The discharge was simulated according to the future projected climate scenarios. Then, a water balance was assessed for the micro-catchment. The results showed that understanding of likely response of hydrologic variables to potential future climate scenarios is critical for water resource management. It was estimated that the spring discharge would be decreased by more than 40 percentage after 50 years mainly due to the increase in evapo-transpiration (91.47% of the precipitation). Evapo-transpiration was found as a major hydrologic process impacting upon water balance in the spring catchment; therefore, its management for better spring resource conservation is recommended by considering high evapo-transpiration months, water deficient period and crop factor. The change in the storage was observed to be 51.78%; so, detail isotopic analysis and long-term monitoring of water balance is required for further characterization of water balance components.

SEWAB – a parameterization of the Surface Energy and Water Balance for atmospheric and hydrologic models

1999 ◽  
Vol 23 (2) ◽  
pp. 165-175 ◽  
Author(s):  
Heinz-Theo Mengelkamp ◽  
Kirsten Warrach ◽  
Ehrhard Raschke
Keyword(s):  
Surface Energy ◽  
Water Balance ◽  
Hydrologic Models

Water balance, drought stress and yields for rainfed field crop rotations under present and future conditions in the Czech Republic

2015 ◽  
Vol 65 ◽  
pp. 175-192 ◽  
Author(s):  
P Hlavinka ◽  
KC Kersebaum ◽  
M Dubrovský ◽  
M Fischer ◽  
E Pohanková ◽  
...  
Keyword(s):  
Czech Republic ◽  
Drought Stress ◽  
Water Balance ◽  
Crop Rotations ◽  
Field Crop ◽  
The Czech Republic

Water Balance for the City of Al-Najaf Al-Ashraf/Southern Iraq

2017 ◽  
Vol 13 (4) ◽  
pp. 186-197
Author(s):  
Tariq Abed Hussain ◽  
◽  
Ghayda Yaseen AlKindi ◽  
Rana Jawad Kadhim
Keyword(s):  
Water Balance ◽  
The City ◽  
Southern Iraq
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