Ohio Assessment for Educators (OAE) Integrated Science (024) Practice Exam

Which phenomenon contributes to the seasonal warm temperatures in the southeastern United States during La Nina?

1. Increased snowfall in higher altitudes

2. Warmer air temperatures in the region during winter

3. Shifts in oceanic currents to cooler temperatures

4. Higher humidity levels affecting temperature

The correct answer is: Warmer air temperatures in the region during winter

The phenomenon that contributes to the seasonal warm temperatures in the southeastern United States during La Niña is associated with warmer air temperatures in the region during winter. During a La Niña event, the Pacific Ocean experiences cooler surface temperatures, which can lead to changes in atmospheric patterns. This often results in a more pronounced jet stream that allows warm air to move northward from the Gulf of Mexico into the southeastern U.S. As a consequence, the southeastern states typically experience milder and warmer winter conditions. The warm, moist air interacts with the land, leading to above-average temperatures during the winter months. Understanding these climatic processes is important for predicting weather patterns and preparing for regional impacts during La Niña events.