CHASE-PL Project meeting in Oslo – February 2016

The second meeting of the CHASE-PL Project consortium was held in Oslo In the MET Norwey Institute, on 16 and 17 February 2016. It was attended by 13 experts, therein seven representatives of MET Norway and six representatives of Polish consortium partners (three from each, IAFE PAS and WULS).
The programme of the meeting was rich in technical matters, reflecting the progress made in project implementation and plans of the remaining work to be accomplished within the project. It was felt that the project clearly reached a harvest phase, with a lot of work to be done on finalising scientific papers to be submitted to peer-reviewed journals as well as on the book.
Technical presentations delivered on the first day included introductory paper of project co-ordinator, Prof. Kundzewicz. Next, Dr Benestad explained the idea of using principal components to represent stations in empirical statistical downscaling that turned to be efficient and fast. Also, the use of PCA was shown to reduce uncertainty as this approach focusses on the first leading modes and ignores the noise present in the other modes of variability. Dr Parding showed results of empirical statistical downscaling of mean precipitation and temperature for 82 Polish stations, introduced composite maps for evaluation of the results (based on reproducing trend, quality of the model, and significance of change). She concluded that the results are sensitive to the climate variable and the season. She found significant temperature increases, for all seasons, but no significant change in precipitation projections, except for spring at a few locations. Possibly, summer precipitation was problematic because of the fact that convective events were not well represented in RCM models. Dr Dobler presented the setting of the parameters for the bias correction of EUROCORDEX RCM/GCM simulations, using gridded data as reference and using quantile mapping. These presentations were subject to vigorous discussion by the participants, e.g. preparation of a synthetic comparison of both ESD and DD results was requested.
On day 2, Prof. Kundzewicz presented the idea of the project book, as an important outcome from the CHASE-PL project, divided in five parts: setting the stage; observed climate; projected climate; impacts; and uncertainty and perception. He sketched the technical options that were next subject to discussion. It was agreed that the book should be published in two languages, English and Polish and that the Polish book should be accessible online for free (to improve awareness in Poland) as well as available in the print-on-demand mode, not for free. Book copies printed within the project funds should be made available for free. Dr Szwed summarized project management issues and called upon partners to send inputs to the annual report. Mr Forlund delivered a talk about the Norwegian experience in communicating climate information through climate service centre (including presentation of climate profiles for counties). Dr Kardel presented the mapping system tools and the webportal and requested input from project scientists.