Joint assembly AGU-GAC-MAC-CGU
Year of publication: 
Several of the recent interflow studies looked at the combined effect of adding interflow and baseflow processes to a land surface or river routing schemes. Although these modifications improve simulated streamflow, it is still not clear what is the contribution of the interflow parameterization to the combined effect, or to the regional climate as these simulations were run offline. In this study, using experiments performed with the fifth generation of the Canadian Regional Climate Model (CRCM5), which includes Canadian Land Surface Scheme (CLASS) and a river routing scheme (WATROUTE modified), the impact of interflow process on regional climate is assessed. The analysis of results from high-resolution (10km) current climate simulations with and without interflow, over northeast Canada, shows modest streamflow increase for majority of the rivers, and some impacts on the land atmosphere interactions via modified soil moisture.

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