A high resolution regional climate model nested into a global climate model was used to perform a Thermohaline Circulation (THC) slowdown experiment. Freshwater corresponding to one-sixth of the Greenland ice sheet melting over 100 years was introduced into the northern Atlantic. This reduced THC strength by half, changing atmospheric circulation and enhancing maritime climate influences over Europe. Implications of weakened thermohaline circulation's effects on specific locations in Europe are discussed.