The theme Storms and Land will focus on attaining realistic simulations of the components of the surface energy budget, water cycle, momentum balance as well as near-surface meteorology over land, in terms of mean and temporal variability, and by updating the representation of the land surface.
For this purpose, land observational networks, including observational super-sites and FLUXNET measurements, and a field study (FESSTVaL in the boreal summers of 2020 and 2021) targeted to observe variability in the planetary boundary layer on scales 2 km to 20 km over Germany will be exploited. Methods will be explored to set up an offline carbon model driven by the output of one SR-ESM.
This theme will study whether SR-ESMs produce a more realistic climatology of blocking, dry and warm spells and surface radiation and whether this is due to a more realistic representation of land surface heterogeneities, or due to better resolved convective storms. Furthermore, upscale effects whereby a better representation of storm and landscape scale circulations becomes manifest in the large-scale circulation will be studied. Implications for the carbon (emissions) stock-take will also be investigated.
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