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What is Climate Science Special Report mean?
Fourth National Climate Assessment (NCA4) 2017/2018 is a 1,500 page two-part congressionally mandated report by the U.S. Global Change Research Program (USGCRP)—the first of its kind by the Trump administration, who released the report on November 23, 2018. The climate assessment process, with a report to be submitted to Congress every four years, is mandated by law through the Global Change Research Act of 1990. The report, which took two years to complete, is the fourth in a series of National Climate Assessments (NCA) which included NCA1 (2000), NCA2 (2009), and NCA3 (2014).
Volume 1 of NCA4, "Climate Science Special Report" (CSSR) was released in October 2017. In the CSSR, researchers reported that "it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. For the warming over the last century, there is no convincing alternative explanation supported by the extent of the observational evidence.": 22
Volume 2, entitled "Impacts, Risks, and Adaptation in the United States", was released on November 23, 2018. According to NOAA, "human health and safety" and American "quality of life" is "increasingly vulnerable to the impacts of climate change". Like the previous reports in this series, the NCA4 is a "stand-alone report of the state of science relating to climate change and its physical impacts".
The authors say that without more significant mitigation efforts, there will be "substantial damages on the U.S. economy, human health, and the environment. Under scenarios with high emissions and limited or no adaptation, annual losses in some sectors are estimated to grow to hundreds of billions of dollars by the end of the century."
While the CSSR is "designed to be an authoritative assessment of the science of climate change" in the United States, it does not include policy recommendations.
referencePosted on 20 Dec 2024, this text provides information on Miscellaneous in Academic & Science related to Academic & Science. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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