Consider a cold supply chain consisting of a single facility (plant, warehouse, farm, etc.) delivering a temperature sensitive product to a single distribution center (DC) in lots of size Q units using full truckload (FTL) transportation mode. A fixed shipping cost of F1 is incurred whether or not the capacity of the temperature-controlled truck, R1, is fully utilized. The lot sizing decision affects the number of trucks to be used and, consequently, the amount of carbon emitted due to transportation.