Many extremes and their associated impacts are now changing. For example, in recent decades most of North America has been experiencing more unusually hot days and nights, fewer unusually cold days and nights, and fewer frost days. Heavy downpours have become more frequent and intense. Droughts are becoming more severe in some regions, though there are no clear trends for North America as a whole. The power and frequency of Atlantic hurricanes have increased substantially in recent decades, though North American mainland land-falling hurricanes do not appear to have increased over the past century. Outside the tropics, storm tracks are shifting northward and the strongest storms are becoming even stronger.
| Author: U. S. Climate Change Science Program |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Jul 02, 2014 |
| Number of Pages: 176 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1500396354 |
| ISBN-13: 9781500396350 |
