EGU21-14859
https://doi.org/10.5194/egusphere-egu21-14859
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Understanding differences in land-atmosphere interactions between pan-European convection-permitting and parametrised climate models

Kate Halladay, Segolene Berthou, and Elizabeth Kendon
Kate Halladay et al.
  • Met Office, Exeter, United Kingdom of Great Britain – England, Scotland, Wales (kate.halladay@metoffice.gov.uk)

Increasingly, we are using high-resolution convection-permitting models for climate projections but these models are less well understood in terms of the interaction between soil moisture, precipitation and evapotranspiration. The work was motivated by the discovery of warm, dry biases in summer in the 2.2 km convection-permitting model over France and eastern Europe compared to the 12 km convection-parametrised model that were associated with drier soils. We analyse several 12 km and 2.2 km versions of the Met Office Unified Model including sensitivity tests relating to soil hydraulics, land cover type and runoff model. We conduct similar tests using the land surface only to compare results between online and offline versions as the absence of some feedbacks can also produce differences.  

How to cite: Halladay, K., Berthou, S., and Kendon, E.: Understanding differences in land-atmosphere interactions between pan-European convection-permitting and parametrised climate models, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-14859, https://doi.org/10.5194/egusphere-egu21-14859, 2021.

Corresponding presentation materials formerly uploaded have been withdrawn.