<p>An atmospheric general circulation model (AGCM) is used to analyze the different impact on the Barents Sea (BS) and Greenland Sea (GS) for a perturbation of sea-to-air DMS flux. We compare contemporary anthropogenic S and contemporary DMS sea-to-air flux (as baseline, B00) sulfur emissions, with contemporary anthropogenic S and a perturbed DMS flux (as modified, B01) sulfur emissions. Results show that the global mean surface DMS and DMS vertically integrated concentration all peaked in June and increases more than 63% in BS and increases about 58% in GS. The concentrations of atmospheric sulfur dioxide vertical integral (SO₂) and sulfate vertical integral (SO₄) only increase less than 12% in both regions. Sulfur emission (SEM) peaked in June and increased about 67% and 41% in GS and BS, respectively. Aerosol optical depth (AOD) increases less than 4% in GS and in BS. Surface temperature (TSC) peaked in July and reduces 0.25 K and 0.8 K in GS and BS, respectively. Satellite data from 2003 to 2023 show that chlorophyll (CHL) concentration in BS exceeds that of GS by 51%. The AOD in GS is only 0.6% higher than in BS. The recent increased rate of DMS surface concentration in BS (from 6% during 1981–2002 to 18.8% in 2003–2023) is mainly caused by elevated CHL concentrations in BS. Finally, the perturbation on DMS flux leads to increase rate of DMS and related sulfur emissions especially in the BS, this tendency will have an offsetting effect on regional warming.</p>