Climate Change Impacts in the United States

Global Climate Change Impacts in the United States

 The most comprehensive, authoritative report on Global Climate Change Impacts in the United States was released on Tuesday June 16th, 2009. This report presents, in plain language, the science and impacts of climate change on the United States, now and in the future. It focuses on climate change impacts on U.S. regions and various aspects of society and the economy such as energy, water, agriculture, and health. A comprehensive series of web-pages were developed that highlight the findings and major conclusions of the report and contain complete downloadable files of the report, as well as a host of additional content on climate change impacts on the U.S.

Some Key findings include:

• Global warming is unequivocal and primarily human-induced.Global temperature has increased over the past 50 years. This observed increase is due primarily to human-induced emissions of heat-trapping gases. (p. 13)

• Climate changes are underway in the United States and are projected to grow. Climate-related changes are already observed in the United States and its coastal waters. These include increases in heavy downpours, rising temperature and sea level, rapidly retreating glaciers, thawing permafrost, lengthening growing seasons, lengthening ice-free seasons in the ocean and on lakes and rivers, earlier snowmelt, and alterations in river flows. These changes are projected to grow.
• Crop and livestock production will be increasingly challenged. Agriculture is considered one of the sectors most adaptable to changes in climate. However, increased heat, pests, water stress, diseases, and weather extremes will pose adaptation challenges for crop and livestock production.
• Threats to human health will increase. Health impacts of climate change are related to heat stress, waterborne diseases, poor air quality, extreme weather events, and diseases transmitted by insects and rodents. Robust public health infrastructure can reduce the potential for negative impacts.

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Filed under: Climate Change