"As an ecologist, you can't escape the effects of climate change on natural resources. We're observing climate impacts in nearly all natural and managed ecosystems," said Ecological Society of America President Jill Baron, an ecosystem scientist with the US Geological Survey in Fort Collins, Col., and a contributor to the NCA. "In order to protect biodiversity and the natural resources that we rely on, we need to be developing policy now. The National Climate Assessment provides guidelines for how to respond and adapt."
The NCA collects, integrates, and assesses observations and research from around the country, helping to show how the climate is changing and what it means for the communities, states, and regions in which we live.
The NCA report is the most comprehensive assessment of climate change science, impacts, and responses in the United States to date. It analyzes the current and future impacts of climate change the United States and summarizes key risks and opportunities for each of ten regions.
Evidence for climate change abounds, from the top of the atmosphere to the depths of the oceans. Scientists and engineers from around the world have meticulously collected this evidence, using satellites and networks of weather balloons, thermometers, buoys, and other observing systems. Evidence of climate change is also visible in the observed and measured changes in location and behavior of species and functioning of ecosystems.
Taken together, this evidence tells an unambiguous story: the planet is warming, and over the last half century, this warming has been driven primarily by human activity. U.S. average temperature has increased by 1.3F to 1.9F since 1895, and most of th
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Ecological Society of America