Long-range Transport Model Intercomparison Studies

Technical Note 2/2000

A.Gusev, I.Ilyin, G.Petersen, A.van Pul A., D.Syrakov

ABSTRACT

This report presents description of the results of cadmium model intercomparison study. It comprises the description of intercomparison procedure, methodology, input data and participated models.

Model intercomparison studies are an important stage in the development of models. The intercomparison of transport models for heavy metals (HM) was initiated by recommendations of the EMEP workshop held in Beekbergen in 1994 and the 18th session of the EMEP Steering Body. This study was aimed at the comparison of approaches used for evaluating of HM transport and deposition within the scope of European region. Beginning with the lead model intercomparison in 1996, this activity has been continued with cadmium study and is planned to be continued for mercury models. These intercomparisons form a sequence of studies which makes a valuable contribution to the development of modelling basis for HMs.

The intercomparison program for the first stage devoted to lead models was developed by a group of experts in the field of HM modelling representing DNMI (Norway), IVL (Sweden), RIVM (the Netherlands), IIASA (Austria), NILU (Norway), GKSS (Germany). MSC-E in collaboration with advisory expert group prepared a protocol, program and initial data for calculations. Seven regional lead models participated at the first stage. The comparison results were presented in the report submitted to the EMEP Steering Body.

The comparison of cadmium transport models for European region is the next stage of this activity. The group of experts from different scientific organizations, shown in the list, in cooperation with MSC-E has developed the program of the cadmium model intercomparison.

Advisory expert group members; Experts Organizations
Dr. J. Bartnicki DNMI, Norway
Dr. A. Iverfeld IVL, Sweden
Prof. J. Munthe IVL, Sweden
Prof. J. Pacyna NILU, Norway
Prof. G. Petersen GKSS, Germany
Dr. A. van Pul RIVM, the Netherlands
Prof. D. Syrakov NIMH, Bulgaria

In view of the fact that actually the same models took part in this intercomparison study compared to previous one, a general approach was kept but the methodology was modified.