This study presents evidence of a distinct pattern of ocean-atmosphere interaction associated with interdecadal variability in the North Atlantic. Using a century of surface marine observations, it is shown that middle- and high-latitude sea surface temperatures (SST) exhibit long-term fluctuations, with negative anomalies before 1920 and during the 1970s and 1980s, and positive anomalies from about 1930 to 1960. The pattern of interdecadal SST variability is constructed by subtracting the average field during 15 cold years from that during a similar interval of warm years. The early-century warming and the more recent cooling display a similar spatial pattern, with maxima near Iceland, the Labrador Sea, and northeast of Bermuda. Corresponding differences in surface atmospheric conditions are determined by averaging and subtracting fields of sea level pressure (SLP) and surface winds. The results show a circulation anomaly in the middle of the ocean basin, centered at about 45°N and 35°W. During warm SST years, an anomalous cyclonic circulation prevailed, while during cold SST years, an anticyclonic anomaly dominated. These anomalies are strongest in winter. Interdecadal patterns of SST and SLP and winds lack a similar coherent relationship, suggesting that interdecadal variability may be governed by a basin-scale dynamical interaction between the large-scale oceanic circulation and the atmosphere. The study also examines interannual variability, showing that it is characterized by bands of zonally elongated centers of action that are negatively correlated with one another. These anomalies underlie similarly banded features in the zonal wind distribution. The mutual relationship between interannual fluctuations of SST and surface wind conditions suggests that the former are maintained by the latter through a local thermodynamic interaction. The study finds that interdecadal variability in the North Atlantic is linked to changes in the large-scale oceanic circulation and the atmosphere. The spatial distribution of interdecadal SST variability supports the hypothesis that changes in the large-scale oceanic circulation are involved. The centers of action in the interdecadal pattern occur in areas known for their unique role in ocean dynamics, such as the Labrador Sea and the surroundings of Iceland, where North Atlantic Deep Water (NADW) is formed. This water mass is formed by various processes, including convection and entrainment of surface water. The northward-flowing surface water and the southward-flowing deep water define the North Atlantic branch of the thermohaline circulation (THC), which plays a crucial role in the global northward heat transport that balances the equator-to-pole thermal contrast. A more intense THC implies warm advection northward at the ocean surface, while a weaker than normal circulation implies surface cooling over these regions.This study presents evidence of a distinct pattern of ocean-atmosphere interaction associated with interdecadal variability in the North Atlantic. Using a century of surface marine observations, it is shown that middle- and high-latitude sea surface temperatures (SST) exhibit long-term fluctuations, with negative anomalies before 1920 and during the 1970s and 1980s, and positive anomalies from about 1930 to 1960. The pattern of interdecadal SST variability is constructed by subtracting the average field during 15 cold years from that during a similar interval of warm years. The early-century warming and the more recent cooling display a similar spatial pattern, with maxima near Iceland, the Labrador Sea, and northeast of Bermuda. Corresponding differences in surface atmospheric conditions are determined by averaging and subtracting fields of sea level pressure (SLP) and surface winds. The results show a circulation anomaly in the middle of the ocean basin, centered at about 45°N and 35°W. During warm SST years, an anomalous cyclonic circulation prevailed, while during cold SST years, an anticyclonic anomaly dominated. These anomalies are strongest in winter. Interdecadal patterns of SST and SLP and winds lack a similar coherent relationship, suggesting that interdecadal variability may be governed by a basin-scale dynamical interaction between the large-scale oceanic circulation and the atmosphere. The study also examines interannual variability, showing that it is characterized by bands of zonally elongated centers of action that are negatively correlated with one another. These anomalies underlie similarly banded features in the zonal wind distribution. The mutual relationship between interannual fluctuations of SST and surface wind conditions suggests that the former are maintained by the latter through a local thermodynamic interaction. The study finds that interdecadal variability in the North Atlantic is linked to changes in the large-scale oceanic circulation and the atmosphere. The spatial distribution of interdecadal SST variability supports the hypothesis that changes in the large-scale oceanic circulation are involved. The centers of action in the interdecadal pattern occur in areas known for their unique role in ocean dynamics, such as the Labrador Sea and the surroundings of Iceland, where North Atlantic Deep Water (NADW) is formed. This water mass is formed by various processes, including convection and entrainment of surface water. The northward-flowing surface water and the southward-flowing deep water define the North Atlantic branch of the thermohaline circulation (THC), which plays a crucial role in the global northward heat transport that balances the equator-to-pole thermal contrast. A more intense THC implies warm advection northward at the ocean surface, while a weaker than normal circulation implies surface cooling over these regions.