 The mid-latitude westerly winds may have tracked sea ice growth southward across the North Atlantic as the cooling became more pronounced, resulting in time transgressive climate shifts across northern Europe and explaining the lag between the Laacher See Tephra and the clearest (wind-derived) evidence for the Younger Dryas in central European lake sediments.Although the timing of the eruption appears to coincide with the beginning of the Younger Dryas, and the amount of sulfur contained would have been enough to result in substantial Northern Hemisphere cooling, the hypothesis has not yet been tested thoroughly, and no climate model simulations are currently available.The exact nature of the positive feedback is also unknown, and questions remain regarding the sensitivity to the deglacial climate to a volcanic forcing of the size and sulfur content of the Laacher See eruption.