The Davis Strait is located between Northern Canada and Greenland. It is the largest strait in the world with an extreme tidal range of 30-50 feet. Cold water flows from the Arctic Ocean through the Davis Strait to the North Atlantic Ocean in the Labrador Current while warmer water from the North Atlantic Drift moves from the south into the strait. As a connector between the Arctic Ocean and the Atlantic Ocean, the Davis Strait is a unique environment to study water chemistry. During the summer sea ice melt, the seawater is “fresher” than in the winter when freezing of the ice caps is occurring and the water is more saline. Just how do all of these factors affect the water chemistry in the Davis Strait and what are the implications for ocean acidification? This research cruise is looking at water sample chemistry across the strait and at depth by measuring a variety of parameters such as pCO2, pH, alkalinity, oxygen isotopes, dissolved inorganic carbon, and dissolved organic carbon, among others, to look for answers.