why are temperature variations greater over dry land than they are over water
Water is slower to change temperature than dry land, which means that sometimes oceans will be warmer than the surrounding land, and sometimes cooler. The air over the oceans or the land reflect their tempreatures, so masses of cold and warm air form.s a result, land heats up faster in the day and cools  down more slowly at night than water does. For this reason, air  over land tends to be warmer in the day an cooler at night than air  over water. + 3 others found this useful. Awais Ali.