Fig. 6From: Multi-year assessment of the impact of ship-borne radiosonde observations on polar WRF forecasts in the ArcticPercentage differences in RMSE (%) between the CTL and NoAraon experiments (CTL minus NoAraon) for a temperature, b geopotential height, c zonal wind, and d meridional wind. RMSEs are calculated over areas north of 70°N using ERA5 reanalysis as a reference, and RMSEs from four selected cycles (i.e., cycles at 00 UTC on August 23, 2017, August 31, 2018, September 10, 2019, and August 23, 2021) are averagedBack to article page