Developing an independent, generic, phosphorus modelling component for use with grid-oriented, physically-based distributed catchment models
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Title: | Developing an independent, generic, phosphorus modelling component for use with grid-oriented, physically-based distributed catchment models | Authors: | Nasr, Ahmed Elssidig Taskinen, Antti Bruen, Michael |
Permanent link: | http://hdl.handle.net/10197/2308 | Date: | Aug-2003 | Online since: | 2010-08-05T16:28:34Z | Abstract: | Grid-oriented, physically based catchment models calculate fields of various hydrological variables relevant to phosphorous detachment and transport. These include (i) for surface transport: overland flow depth and flow in the coordinate directions, sediment load, and sediment concentration and (ii) for subsurface transport: soil moisture and hydraulic head at various depths in the soil. These variables can be considered as decoupled from any chemical phosphorous model since phosphorous concentrations, either as dissolved or particulate, do not influence the model calculations of the hydrological fields. Thus the phosphorous concentration calculations can be carried out independently from and after the hydrological calculations. This makes it possible to produce a separate phosphorous modelling component which takes as input the hydrological fields produced by the catchment model and which calculates, at each step the phosphorous concentrations in the flows. This paper summarise the equations and structure of Grid Oriented Phosphorous Component (GOPC) developed for simulating the phosphorus concentrations and loads using the outputs of a fully distributed physical based hydrological model. Also the GOPC performance is illustrated by am example of an experimental catchment (created by the author) subjected to some ideal conditions. | Funding Details: | Other funder | Type of material: | Conference Publication | Publisher: | IWA Publishing | Copyright (published version): | IWA Publishing | Keywords: | Grid oriented phosphorus component; Phosphorus modelling; Phosphorus transport; Soil phosphorus; Phosphorous component | Subject LCSH: | Soils--Phosphorus content Water--Phosphorus content Hydrologic models |
Language: | en | Status of Item: | Peer reviewed | Is part of: | Diffuse pollution and basin management : proceedings of the 7th IWA International Specialised Conference on Diffuse Pollution and Basin Management, Dublin, Ireland, 17-21st August 2003 | Conference Details: | Presented at the 7th IWA International Specialised Conference on Diffuse Pollution and Basin Management, Dublin, Ireland, 17-21st August 2003 | ISBN: | 9781843394778 |
Appears in Collections: | Centre for Water Resources Research Collection Critical Infrastructure Group Research Collection Civil Engineering Research Collection |
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