North American tree-ring sequences

North American tree-ring sequences involve analyzing the layers of growth rings in trees, which form annually. By studying these rings in different trees across regions, scientists can reconstruct past climate conditions, such as droughts or wet periods, over centuries. These sequences serve as natural records, helping us understand historical environmental changes and improve predictions of future climate trends. They are valuable tools in dendrochronology, the scientific method of dating and interpreting tree rings for climate and ecological research.