55h 
V. Maurer et al.: Evaluation of coupled and uncoupled simulations 
Table 2. Overview of datasets used for evaluation; references are given in the text; the full years were used if not denoted otherwise. 
Dataset Evaluated quantities Used in Sect. Evaluated time period 
Coperniens PSA 551 CELand- CSS SST, sea ice 3.1,3.3.1,A2 1981-2020 
reprocessed SST analyses 
ERA5S SST 3.2.1 1979-2020 
tas, tasmin, 1979-2020; 
055 tasmax, precipitation 32.1, AI 2001-2020 in Fig. A1 
Meteorological stations hourly wind speed (10m) 3.23 2011-2020 
FINO1 wind measurement hourly wind speed (100m) 3.2.3 2004-2010 
Copernicus Baltic Sea-In Situ ocean temperature 
Near Real Time Observations and salinity (profiles) S32,3.5002 16752020 
Copernicus Multi Observation Global Ocean a . ad N 
Sea Surface Salinity and Sea Surface Density surface salinity 3.33 December 1993-November 2020 
GESLAv3.0 observational data sea surface heights (SSH) 3.3.4,4.2, A2 2015-2019 (or selected events) 
ı x temperature and November 2014, 
Baltic thalweg level 4 dataset salinity (thalweg) A1 February and March 2015 
Copernicus Baltic Sea Physics Reanalysis SST 4.3 1989-2020 
CERES surface radiation Al 2001-2020 
IMERG precipitation Al 2001-2020 
Copernicus Atlantic — European North West Shelf — 
. . SST 
Ocean Physics Reanalvsis 
(a) ROAM-NBS vs. OBS 
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Figure 2. Seasonal mean sea surface temperature difference between ROAM-NBS and Copernicus observations (a) and ROAM-NBS and 
NEMO-NBS (b) for the period September 1981-November 2020. 
Geosci. Model Derv., 19. 543-578, 2026 
https://doi.org/10.5194/sgmd-19-543-2026