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SWAP

Fig5_1

Source: www.swap.alterra.ni

Research model: SWAP

 

SWAP (Soil, Water, Atmosphere and Plant) simulates transport of water, solutes and heat in unsaturated/saturated soils.

The model is designed to simulate flow and transport processes at field scale level, during growing seasons and for long term time series.

 

Basic specifications of the model:

Name of model

SWAP – Soil Water Atmosphere Plant, v.3x and v4x

About the model

 

Purpose of model

Simulates transport of water, solutes, and heat in unsaturated and saturated soils. The model is designed to simulate flow and transport processes at field scale level, during growing seasons and for long term time series.

Developer

Wageningen UR, The Netherlands
https://www.swap.alterra.nl/

Scale

 

Spatial

1D/semi 2D profile

Temporal

Daily (hourly)

Process description

 

Model type

Process based

Heat

Yes

Interception

Yes

Snow dynamics

Yes

Infiltration & water flow

Yes, Richards equation

Frozen soil

Yes

Surface runoff

Yes, Hortonian and saturation excess

Crop growth

Yes, simple or more complex approach via link to WOFOST

Macropore flow

Yes (not in frozen soil)

Nitrogen transport

Yes, often linked to ANIMO model

Evapotranspiration

Yes, both potential and actual ET are calculated

Phosphorus transport

No, often linked to ANIMO model

Artificial drainage

Yes, different options

Particle transport

No

Percolation

Yes

Pesticide transport

No, often linked to ANIMO model

Other:

The rswap soft calibration and visualization tool has been developed in NIBIO in 2023.

 

EMR member(s) with SWAP expertis:

 - Sigrun Hjalmarsdottir Kværnø

Attila Nemes

- Jannes Stolte

Publications

To document

Abstract

The H2020 OPTAIN project involves both, catchment-, and field-scale modelling of the transport of water and nutrients. The catchment-scale modelling is performed at fourteen case study catchments across Europe using the SWAT+ model. At seven OPTAIN case studies, field-scale modelling is applied using the SWAP model. The aim of the SWAP modelling is to provide data on soil water balance elements using a more detailed (at field-scale) soil hydrological model and to cross-validate this data with the relevant fields in SWAT+. As the official manual from the SWAP model developers is rather detailed and complex, the OPTAIN SWAP modelling protocol focuses on practical issues, without overwhelming the modellers with information unnecessary for their case-studies. It also describes new tools, such as rswap, developed within the OPTAIN project for reference data quality check, model calibration and visualisation of the model results.

Abstract

swap is an R-package designed to help interface and work with SWAP4 model. It consists of a variety of functions that assist the user in otherwise tedious and repetitive tasks.

Projects

Picture4

Division of Environment and Natural Resources

OPTAIN: Optimal strategies to retain and re-use water and nutrients in small agricultural catchments


OPTAIN proposes a social and scientific journey toward the increasing and better understanding of the multiple benefits of Natural/Small Water Retention Measures (NSWRM). The Norwegian case study area, Kråkstadelva catchment, is located within the Hobølelva watershed 30 km S-SE of Oslo.

Aktiv Sist oppdatert: 08.05.2023
Slutt: aug 2025
Start: sep 2020
Project image
Dreneringssystemer i leirjord i Trøndelag: Tilpasning til endret klima


Drenering av leirjord er forventet å bli stadig mer nødvendig når klimaet endrer seg. Dagens råd om drenering baserer seg i stor grad på data fra eksisterende klima, og det er derfor behov for å benytte tilpassede modeller, slik at vi kan vurdere behovet for grøfting også i et fremtidig klima. Så langt har anvendelse av modeller på leirjord vært vanskelig og gitt utilfredsstillende resultater.  Måleresultater fra Kvithamar så langt tyder på at dimensjoneringen av grøftesystemer er utfordrende og vil bli enda mer krevende under fremtidige forhold med endret nedbørmønster.

INAKTIV Sist oppdatert: 08.09.2020
Slutt: jul 2021
Start: mar 2020
Atj 2018-3562

Division of Environment and Natural Resources

IRIDA: Innovative remote and ground sensors, data and tools into a decision support system for agriculture water management


Efficient agriculture water use is of crucial importance for water resources management. Evapotranspiration is an important part of the water cycle, as it is the sum of evaporation and plant transpiration from the Earth's land and ocean surface to the atmosphere. Consequently, accurately determining evapotranspiration (ET) is the first step for improving irrigation efficiency and productivity and for quantifying the ecosystem water balance.

INAKTIV Sist oppdatert: 03.09.2022
Slutt: sep 2022
Start: may 2016