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@ARTICLE{PatakchiYousefi:1014219,
author = {Patakchi Yousefi, Kaveh and Kollet, Stefan},
title = {{D}eep learning of model- and reanalysis-based
precipitation and pressure mismatches over {E}urope},
journal = {Frontiers in water},
volume = {5},
issn = {2624-9375},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {FZJ-2023-03203},
pages = {1178114},
year = {2023},
abstract = {Physically based numerical weather prediction and climate
models provide useful information for a large number of end
users, such as flood forecasters, water resource managers,
and farmers. However, due to model uncertainties arising
from, e.g., initial value and model errors, the simulation
results do not match the in situ or remotely sensed
observations to arbitrary accuracy. Merging model-based data
with observations yield promising results benefiting
simultaneously from the information content of the model
results and observations. Machine learning (ML) and/or deep
learning (DL) methods have been shown to be useful tools in
closing the gap between models and observations due to the
capacity in the representation of the non-linear
space–time correlation structure. This study focused on
using UNet encoder–decoder convolutional neural networks
(CNNs) for extracting spatiotemporal features from model
simulations for predicting the actual mismatches (errors)
between the simulation results and a reference data set.
Here, the climate simulations over Europe from the
Terrestrial Systems Modeling Platform (TSMP) were used as
input to the CNN. The COSMO-REA6 reanalysis data were used
as a reference. The proposed merging framework was applied
to mismatches in precipitation and surface pressure
representing more and less chaotic variables, respectively.
The merged data show a strong average improvement in mean
error (~ $47\%),$ correlation coefficient (~ $37\%),$ and
root mean square error $(~22\%).$ To highlight the
performance of the DL-based method, the results were
compared with the results obtained by a baseline method,
quantile mapping. The proposed DL-based merging methodology
can be used either during the simulation to correct model
forecast output online or in a post-processing step, for
downstream impact applications, such as flood forecasting,
water resources management, and agriculture.},
cin = {IBG-3},
ddc = {333.7},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001002189600001},
doi = {10.3389/frwa.2023.1178114},
url = {https://juser.fz-juelich.de/record/1014219},
}