It's based on contributions from scientists from around the world, according to those who compiled the report. Carbon dioxide, methane and nitrous oxide, all drivers of atmospheric warming, recorded new highs previous year, with carbon dioxide surpassing a milestone 400 parts per million for the first time in recent history. "Notably, the increase in Carbon dioxide concentration was the largest in the almost six-decade observational record". Record-high temperatures were measured below the surface of the permafrost, or permanently frozen ground, across the North Slope of Alaska.
California experienced its warmest summer on record past year, the report noted, as one of its most severe droughts gave way to one of its wettest winters.
Sea surface temperatures were the highest on record.
Another record high was also achieved in global greenhouse gas concentrations.
Report suggests USA is already feeling the impact of climate change Average temperatures throughout the United States have risen rapidly since 1980, according to a new report.
The rapid rise in the area has been attributed to processes that include longshore wind forcing, weakening of the Gulf Stream associated with decreased Atlantic Meridional Overturning Circulation, what's known as an inverse barometer effect and variability. On Monday the New York Times published a previously released draft of the special science section of the National Climate Assessment that is posted online.
Cape Hatteras is geographically significant because the Gulf Stream, which runs close to the coast for hundreds of miles, veers off into the deeper ocean when it passes Cape Hatteras.
In many ways the report is a direct challenge to President Donald Trump's dismissal of concern about climate change, and the contention by EPA administrator Scott Pruitt, Secretary of Energy Rick Perry and others in his administrations that the jury is still out on climate change and humans' responsibility for it. "The work confirms and extends two earlier papers, including one published in 2015 by a group led by Britain's National Oceanography Center in Liverpool".
As it detailed the conclusions of the draft report, the New York Times highlighted an equally scary prospect: That without the intervention of the New York Times, it might not have seen the light of day.
And it states the evidence that human activity is driving climate change is stronger than ever.
Global sea level was also the highest on record, at 82 millimeters higher than the average in 1993, when records began to be recorded with the current method.
Earlier this week, however, a draft copy of the National Climate Assessment produced by 13 federal agencies made an unequivocal connection between weather extremes and human-produced greenhouse gases.
"Climate change is one of the most pressing issues facing humanity and life on Earth", it added. With the mitigating strategies proposed by the Paris climate accords, the actual increase is projected to be 2º Celsius, but that outcome is a "best case scenario" according to researchers at the University of Washington. And it states that changes in the region could have impacts on the climate around the globe.
Despite the correction, the Times piece still contains language worrying that "the Trump administration could change or suppress the report".