In:
Geoscientific Model Development, Copernicus GmbH, Vol. 16, No. 16 ( 2023-08-24), p. 4811-4833
Abstract:
Abstract. Regional coupled and Earth system models are fundamental numerical
tools for climate investigations, downscaling of predictions and
projections, process-oriented understanding of regional extreme events, and
many more applications. Here we introduce a newly developed coupled regional
modeling framework for the Mediterranean region, called MESMAR
(Mediterranean Earth System model at ISMAR) version 1, which is composed of
the Weather Research and Forecasting (WRF) atmospheric model, the NEMO oceanic model, and the hydrological
discharge (HD) model, coupled via the OASIS coupler. The model is implemented at
about 1/12∘ of horizontal resolution for the ocean and river
routing, while roughly twice coarser for the atmosphere, and it is targeted
to long-term investigations. We focus on the evaluation of skill score
metrics from several sensitivity experiments devoted to (i) understanding the
best vertical physics configuration for NEMO, (ii) identifying the impact of
the interactive river runoff, and (iii) choosing the best-performing
physics–microphysics suite for WRF in the regional coupled system. The
modeling system has been developed for downscaling reanalyses and long-range
predictions, as well as coupled data assimilation experiments. We then formulate
and show the performance of the system when weakly coupled data assimilation
is embedded in the system (variational assimilation in the ocean and
spectral nudging in the atmosphere), in particular for the representation of
extreme events like intense Mediterranean cyclones (i.e., medicanes).
Finally, we outline plans for future extension of the modeling framework.
Type of Medium:
Online Resource
ISSN:
1991-9603
DOI:
10.5194/gmd-16-4811-2023
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2023
detail.hit.zdb_id:
2456725-5
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