Climate Change Impacts
Multimedia
Lessons and Activities
Real World Data
Background Information
Climate changes are underway in the United States and are projected to grow.
Global temperature has increased over the past 50 years, primarily due to human behaviors that release heat-trapping gases, like carbon dioxide.
Widespread climate-related impacts are occurring now and are expected to increase.
Changes are happening in the United States, and elsewhere, but the impacts vary from region to region. These changes are affecting sectors of our society that cross regional boundaries. Already impacted are things that we depend upon; water, energy, transportation, agriculture, ecosystems, and human health.
Across the country, water is an issue. However, the specific impact is different from location to location. In some regions, particularly in the western United States, drought is an important issue. Less snow in the mountains is important in the West and Alaska where the snowpack stores water for later use. In the Midwest and northeastern states, the amount of heavy downpours has substantially increased over the past few decades. In most regions, floods and water quality problems are likely to be worse because of climate change.
Agriculture is considered adaptable to changes in climate. However, changes, like increased temperatures, water stress, diseases, and weather extremes will create new challenges for food producers, upon which our society depends.
Human health is likely to be affected by climate change. A changing environment will likely cause more heat stress, an increase in waterborne diseases, poor air quality, extreme weather events, and diseases transmitted by insects and rodents. Higher sea levels and storm surges will cause U.S. coastal areas to be at a greater risk of erosion and flooding.
Future climate change and its impacts depend on choices made today.
The amount of future climate change largely depends on the amount of heat-trapping gases released by humans. Lower releases of these gases will decrease the impact of climate change. However, unless substantially decreased emissions the impacts are expected to become increasingly worse.
Educational Connection
This Climate Change Impacts Collection provides the teacher and their students the opportunity to explore some of the environmental changes already observed, from the Arctic to tropical regions. Data sources provide historic precipitation and temperature records, allowing students to compare changes in their own local area to others. Lessons included, provide opportunities for place-based instruction related to climate change, others provided a more global perspective. The background resources provided in this collection tend to be for the teacher and/or the advanced student.
Features
Ocean Stored Significant Warming Over Last 16 Years
The upper layer of the world's ocean has warmed since 1993, indicating a strong climate change signal, according to a new study. The energy stored is enough to power nearly 500 100-watt light bulbs per each of the roughly 6.7 billion people on the planet continuously over the 16-year study period....
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"Vital New Roadmap" Underscores Need to Study Climate Change, Human Health Links
The vulnerability of people to the health effects of climate change is the focus of a report released today by an NIH-led federal interagency group that includes NOAA....
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Time and Tides
The impacts of climate change and sea level rise have the potential to contaminate facilities and natural resources in the Pacific Northwest. Now, coastal managers have a new tool to help them visualize future changes and decide how they might avoid these problems....
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