The National Climate Assessment (NCA) is being conducted under the
auspices of the Global Change Research Act of 1990, which requires a
report to the President and the Congress that evaluates, integrates and
interprets the findings of the $2.6 billion USGCRP every four years.
National climate assessments act as a status report on climate change
science and impacts. They are based on observations made across the
country and compare these observations to predictions from climate
system models. The NCA aims to incorporate advances in the
understanding of climate science into larger social, ecological, and
policy systems, and with this provide integrated analyses of impacts and
vulnerability. The NCA will help evaluate the effectiveness of our
mitigation and adaptation activities and identify economic opportunities
that arise as the climate changes. It will also serve to integrate
scientific information from multiple sources and highlight key findings
and significant gaps in our knowledge. The NCA aims to help the federal
government prioritize climate science investments, and in doing so will
help to provide the science that can be used by communities around our
Nation as they try to create a more sustainable and
for our future.
The previous Assessments were completed in 2000 and 2009, and the final reports are available on the USGCRP website.