In a statement, White House spokeswoman Lindsay Walters said "to address future risks, the administration supports a strong economy and access to affordable, reliable energy, which are integral to advancing technology and innovation and the development of resilient, modern infrastructure".
The findings, which come as part of a long-planned report, underscore the reality of climate change during the Trump presidency: the President may not believe in climate change or understand the science behind it, but he can not control it or its political, economic and scientific consequences.
President Donald Trump has been a skeptic about climate change science - he tweeted in 2012 that the "concept of global warming was created by and for the Chinese in order to make US manufacturing non-competitive".
The report's authors, who represent numerous federal agencies, say they are more certain than ever that climate change poses a severe threat to Americans' health and pocketbooks, as well as to the country's infrastructure and natural resources.
"As a climate scientist it is nearly surreal", she said. Rising growing-season temperatures in the region are projected to be the largest single factor contributing to declines of USA agriculture production.
Many regions are also experiencing more extreme rain - and ensuing floods - including the Midwest, Northeast, Southeast and Southern Great Plains, which includes Texas and Oklahoma.
"Adaptation and mitigation policies and programs that help individuals, communities, and states prepare for the risks of a changing climate reduce the number of injuries, illnesses and deaths from climate-related health outcomes", the report stated.
US Republican senators split with Trump over murdered Saudi journalist
A third Republican, Senator Susan Collins of ME , said Sunday on Twitter that if Trump doesn't reconsider what the US can do about the Khashoggi murder, Congress must step up.
As an example, the NCA4 assesses that each year, some US sectors are likely to see more than $100 billion of losses by the end of this century as a result of climate change, which, for context, is higher than the GDP of many states. Since the global nature of food-system risk drew interest during the 2014 report discussions, researchers conducted deeper analysis "on things like the vulnerability of US supply chains".
Outside scientists and officials from 13 federal agencies wrote the report, which was released on the afternoon following Thanksgiving.
The second volume's release comes just one day after President Trump tweeted, "Brutal and Extended Cold Blast could shatter ALL RECORDS - Whatever happened to Global Warming?"
The report also finds that the US will be 3-12 degrees hotter by the end of the century, depending on how much greenhouse gas is released into the atmosphere. "Over climate timescales of multiple decades, however, global temperature continues to steadily increase". "Every new National Climate Assessment has built on the previous one, confirming that climate change is already happening, and that we need to act", Werner insisted.
The studies clash with policy under President Donald Trump, who has been rolling back Obama-era environmental and climate protections to maximize production of domestic fossil fuels, including crude oil, already the highest in the world, above Saudi Arabia and Russian Federation. Report director David Reidmiller said questions about the timing were "relevant", but said what was in the report was more important.
Citing numerous studies, the new climate report says more than 90 per cent of the current warming is caused by humans. That report made it clear that while a certain level of warming is locked in, a wide range of serious impacts can be avoided-from hundreds of millions of additional people being regularly exposed to extreme heat waves worldwide to the complete loss of warm water coral reefs - if we can contain warming to 1.5°C instead of 2°C.
What does the report say?
"And this warming trend can only be explained by human activities, especially emissions of greenhouse gases into the atmosphere".