COST 623, Working group 1 (Scale Issues)

Report of Meeting, Leuven 15 April 2000

A meeting was held in association with the Inrernational Franqui Chair Workshop, which was organised in The Catholic University (KU) of Leuven, Belgium for 12-15 April 2000, organised by Professor Keith Beven, the holder of the visiting Chair. The following is a summary of the themes of this meeting, and full details of the final day which formed the scientific content of the WG1 meeting, on Distributed modelling in Soil Erosion.

The Future Of Distributed Hydrological Modelling

Wed 12th Session 1: Scale and Parameter Estimation Issues in Distributed Modelling

Thu 13th Session 2: Remote Sensing and GIS and distributed modelling

Fri 14th Session 3: Modelling the Hydrological Impacts of Land Use and Climate Change.

Sat 15th Session 4: Distributed modelling in Soil Erosion.

0900-0940: Victor Jetten (Keynote):Distributed Soil erosion models: prospects for the future

0940-1000: Michael Bruen & Antti Taskinen: Distributed modelling of runoff and sediment in very small agricultural catchments with cohesive soils: an incremental investigation (Finland)

1000-1020: Olivier Cerdan et al: Modelling soil erosion in cultivated catchments incorporating multi-scale field and laboratory experiments (France)

1100-1140: Véronique Auzet & Bruno Ambroise (Keynote): Typologies of soil surface conditions: interest for soil erosion modelling.

1140-1200: Richard Brazier & Keith Beven: Learning from the GLUE methodology: implications of equifinality and uncertainty from complex, physically based soil erosion models (WEPP)

1200-1220: Ilona Barlund et al: Application of USLE / ICECREAM under northern European conditions (Finland).

1220-1240: Juergen Schmidt & M. von Werner: Modelling soil erosion and sediment yields of reservoir catchments in the Osterzgebirge region of Saxony (Germany).

1240-1300: Ionel Zlate: Physically based and distributed modelling of the rainfall-runoff and coupled erosion processes in experimental basins in Romania


This was followed by a business meeting, with the following significant outcomes:

  1. Reports of the Leicester and Reading WG1 meetings were accepted. 5 papers on Rainfall simulation are to be published as a themed section in Earth Surface Processes and Landforms in late 2000, edited by Tony Parsons and Bruce Lascelles. A special Issue in Agriculture, Ecology and Environment will be devoted to papers presented in Reading, jointly with the GCTE Networks on Soil Erosion, Soil Organic Matter and Soil Biology. 12 papers were submitted for 31 Mar '00 and are currently under review, together with an editorial synthesis for Mike Kirkby and David Powlson. Papers from the the Franqui Chair workshop will be submitted as a special issue of Hydrological Processes, edited by Keith Beven and Jan Feyen.
  2. Future meetings planned:

It is proposed to combine this meeting with a WG3 meeting, held on 7th Sep, and with the same local organiser. (COST organiser = Seppo Rekolainen)

  1. Promotion of Research on Scale Issues through WG1.

There was a fruitful discussion on future research priorities. Although it was recognised that there was a lack of knowledge of many detailed processes, the priority for the working group lies in scaling up, incorporating the current state of the art on detailed mechanisms as fully as possible. A summary list was made of proposed topics for future work

  1. Applications of land-use scenarios and climate, at regional to supra-national scales, to estimate delivery of sediment to river courses and local off-site effects.
  1. Interpreting a wider range of processes to provide major missing components in coarse scale understanding, e.g.
  1. Linkage to the growing importance of sediment-borne pollutants, eg phosphorus
  2. Impact of changing grid resolution on model forecasts.

These themes can be most effectively addressed in different ways. Theme A was seen as a suitable topic for an additional meeting, and a tentative proposal was made for a meeting on this theme in NL, organised by Victor Jetten for '01. Theme B will be partially addressed through the Almeria (WG1) and Oslo (WG2) meetings, and we should be aware of the need to develop this theme through those meetings. Theme C was proposed for exploration through a joint meeting with the appropriate cognate COST action. Theme D was seen as an important technical issue, but one which was less suitable as a separate meeting theme, but could be included as a session within A.

The paper meeting was attended by c.40 people, and the business meeting by 17 people, 10 of them supported by COST WG1 and four as members of the Managing Committee.

Last updated 25/05/2000 00:09:14