EPA’s Climate Change Indicators in the United States, 2012, presents compelling evidence that many fundamental measures of climate in the United States are changing. Temperatures are rising, snow and rainfall patterns are shifting, and more extreme climate events—like heavy rainstorms and record-high temperatures—are already affecting society and ecosystems. Similar changes are occurring around the world. EPA’s report presents 26 indicators, which are organized into the five categories listed at right.
Keywords: climate change; greenhouse gases; weather; sea level; snow and ice; society; ecosystems