In:
Earth System Science Data, Copernicus GmbH, Vol. 13, No. 9 ( 2021-09-14), p. 4437-4464
Kurzfassung:
Abstract. Coupled numerical models, which simulate water and energy fluxes in the
subsurface–land-surface–atmosphere system in a physically consistent way, are
a prerequisite for the analysis and a better understanding of heat and
matter exchange fluxes at compartmental boundaries and interdependencies of
states across these boundaries. Complete state evolutions generated by such
models may be regarded as a proxy of the real world, provided they are run
at sufficiently high resolution and incorporate the most important
processes. Such a simulated reality can be used to test hypotheses on the
functioning of the coupled terrestrial system. Coupled simulation systems,
however, face severe problems caused by the vastly different scales of the
processes acting in and between the compartments of the terrestrial system,
which also hinders comprehensive tests of their realism. We used the
Terrestrial Systems Modeling Platform (TerrSysMP), which couples the
meteorological Consortium for Small-scale Modeling (COSMO) model, the land-surface Community Land Model (CLM), and the subsurface
ParFlow model, to generate a simulated catchment for a regional terrestrial
system mimicking the Neckar catchment in southwest Germany, the virtual
Neckar catchment. Simulations for this catchment are made for the period
2007–2015 and at a spatial resolution of 400 m for the land surface and
subsurface and 1.1 km for the atmosphere. Among a discussion of modeling
challenges, the model performance is evaluated based on observations
covering several variables of the water cycle. We find that the simulated
catchment behaves in many aspects quite close to observations of the real
Neckar catchment, e.g., concerning atmospheric boundary-layer height,
precipitation, and runoff. But also discrepancies become apparent, both in
the ability of the model to correctly simulate some processes which still
need improvement, such as overland flow, and in the realism of some
observation operators like the satellite-based soil moisture sensors. The
whole raw dataset is available for interested users. The dataset described
here is available via the CERA database (Schalge et al., 2020):
https://doi.org/10.26050/WDCC/Neckar_VCS_v1.
Materialart:
Online-Ressource
ISSN:
1866-3516
DOI:
10.5194/essd-13-4437-2021
Sprache:
Englisch
Verlag:
Copernicus GmbH
Publikationsdatum:
2021
ZDB Id:
2475469-9
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