In the north, the Labrador Shelf and Slope are dominated by the influence of the Northwest Atlantic's subpolar gyre, involving the Labrador Current carrying relatively cool and fresh water, as well as sea ice, south from the subarctic to the Newfoundland Shelf and Slope (including the Grand Banks). [...] The southern part of the LAB, from the southern flanks of Flemish Cap and the Grand Banks, across the Scotian Shelf and Slope to the Gulf of Maine, is a transition zone with a subpolar influence dominating over most of the shelf, but with increasing subtropical influence from the Gulf Stream system as one proceeds westward. [...] The climate trends and projections identified are typical of the entire LAB (to varying degrees) and provide the basis for the predicted environmental change and the resulting advice in this report. [...] The 50-year projections for key atmospheric variables include a general increase in air temperature and precipitation with seasonal and regional variations, a poleward shift in storm tracks, and an increase in the number of fall storms in the northern part of the LAB. [...] The key projections for hydrologic and cryospheric variables are a decrease in the extent and duration of sea ice, a decrease in the duration of the iceberg season south of 48ºN, an earlier spring peak of river run-off, and lower summer river levels at some sites.