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@ARTICLE{Grgen:891149,
author = {Görgen, Klaus and Kollet, Stefan},
title = {{B}oundary condition and oceanic impacts on the atmospheric
water balance in limited area climate model ensembles},
journal = {Scientific reports},
volume = {11},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {FZJ-2021-01398},
pages = {6228},
year = {2021},
abstract = {Regional climate models (RCMs) are indispensable in climate
research, albeit often characterized by biased terrestrial
precipitation and water budgets. This study identifies
excess oceanic evaporation, in conjunction with the RCMs’
boundary conditions, as drivers contributing to these biases
in RCMs with forced sea surface temperatures in a CORDEX RCM
ensemble over Europe. The RCMs are relaxed to the prescribed
lateral boundary conditions originating from a global model,
effectively matching the driving model's overall atmospheric
moisture flux divergence. As a consequence, excess oceanic
evaporation results in positive precipitation biases over
land due to forced internal recycling of moisture to
maintain the overall flux divergence prescribed by the
boundary conditions. This systematic behaviour is shown
through an analysis of long-term atmospheric water budgets
and atmospheric moisture exchange between oceanic and
continental areas in a multi-model ensemble.},
cin = {IBG-3},
ddc = {600},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {217 - Für eine nachhaltige Bio-Ökonomie – von
Ressourcen zu Produkten (POF4-217) / eLTER - European
Long-Term Ecosystem and socio-ecological Research
Infrastructure (654359) / 2173 - Agro-biogeosystems:
controls, feedbacks and impact (POF4-217)},
pid = {G:(DE-HGF)POF4-217 / G:(EU-Grant)654359 /
G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
pubmed = {33737611},
UT = {WOS:000667581800028},
doi = {10.1038/s41598-021-85744-y},
url = {https://juser.fz-juelich.de/record/891149},
}