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@INPROCEEDINGS{Knist:825396,
author = {Knist, Sebastian and Görgen, Klaus},
title = {{L}and atmosphere coupling in {EURO}-{CORDEX} evaluation
experiments},
reportid = {FZJ-2016-07859},
year = {2016},
abstract = {Interactions between the land surface and the atmosphere
play a fundamental role in the weather and climate system
through their influence on the energy and water cycles. Here
we present results of summertime land-atmosphere coupling
strength in a subset of the ERA-Interim driven EURO-CORDEX
model ensemble (1989-2008) including an evaluation of the
coupling related variables soil moisture and surface energy
fluxes of latent heat (LE) and sensible heat (H). Most of
the regional climate models (RCMs) reproduce soil moisture
and surface fluxes for the different European climate zones
reasonably well. However, for some regions and models
differences are identified, also compared to FLUXNET surface
flux measurements used as observational reference. To
quantify the coupling strength the H-LE-correlation method
has been confirmed as useful and valid for the comparison of
different RCMs. An important advantage of the method is that
it can be applied to standard RCM output variables (H, LE)
as well as to observations, although long time series of
high quality flux measurement data are needed, which are
available only for a few locations across Europe. For the
full 20-year period of summer seasons the EURO-CORDEX
simulations agree in the large-scale patterns, with strong
coupling in Southern Europe and weak coupling for Northern
Europe, also in agreement with the FLUXNET observations. For
large parts of Central Europe, however, the model ensemble
diverges between strong and weak coupling strength. Compared
to the FLUXNET measurements more models tend to overestimate
than underestimate the coupling strength. Higher model
resolution leads to more small-scale heterogeneity but not
necessarily to a change in the large-scale patterns.
Diversity in the ensemble can be both explained by the
different characteristics of the individual land surface
models (LSMs) as well as different climate conditions in the
models.},
month = {May},
date = {2016-05-16},
organization = {International Conference on Regional
Climate (ICRC) CORDEX 2016, Stockholm
(Sweden), 16 May 2016 - 20 May 2016},
subtyp = {After Call},
cin = {JSC / IBG-3},
cid = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)IBG-3-20101118},
pnm = {242 - Land surface processes in the climate system
(POF3-242) / 511 - Computational Science and Mathematical
Methods (POF3-511)},
pid = {G:(DE-HGF)POF3-242 / G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/825396},
}