the national climate assessment (nca) is a united states government interagency ongoing effort on climate change science conducted under the auspices of the global change research act of 1990. nca is a "major product" of the u.s. global change research program (usgcrp) which coordinates a team of hundreds of experts guided by a sixty-member federal advisory committee. nca research is integrated and summarized in the mandatory ongoing national climate assessment reports. the reports are "extensively reviewed by the public and experts, including federal agencies and a panel of the national academy of sciences. the first national climate assessment was published in 2000.the first national climate assessment report was "prepared by the national assessment synthesis team (nast), an advisory committee chartered under the federal advisory committee act to help the us global change research program fulfill its mandate under the global change research act of 1990. the national science and technology council forwarded the report to the president and congress for their consideration as required by the global change research act. administrative support for the us global change research program is provided by the university corporation for atmospheric research, which is sponsored by the national science foundation (nca 2000)." between 2002 and 2009, usgcrp previously known as the u.s. climate change science program (ccsp), produced twenty-one synthesis and assessment products (saps). the second nca was published in 2009{{citation|url=http://www.globalchange.gov/what-we-do/assessment/previous-assessments|title=previous assessmen
Climate_change Climate_change_assessment_and_attribution Climate_change_in_the_United_States Reports_of_the_United_States_government