The three methods of heat transfer include: conduction, convection, and radiation. It is through one of these processes of heat transfer that the air temperature over water is warmer than the water over land during the winter months. You'll notice on the graph, that January (month 1) and February (month 2) water temperatures are about 20 degrees while the respective air temperatures are about 15 degrees. This is a 5 degree difference in temperature between the air and the water at the same geographical location. Which process do you believe to be the cause of the air temperature differences between land surfaces and a body of water? A) Heat goes directly from water to air through conduction. B) The heat of the ocean is being radiated into the air through the process of radiation. C) Cooler air is replaced by warmer air rising from the surface in the process of convection. D) Heat is transferred through the circulation of the water through the atmosphere in the process of convection.