The conclusions were published earlier this week in a new draft portion of the National Climate Assessment emphasized by The New York Times. The report was leaked to the media before it could be approved by the Trump administration, and the scientists responsible said they feared the White House would suppress its contents.
Prior to that, was considered the warmest year of 2015. Record-high temperatures were measured below the surface of the permafrost, or permanently frozen ground, across the North Slope of Alaska. The report listed the state as among the nation's hardest hit by wildfire in 2016, while issuing a broader warning for the future that rising temperatures would mean less snowfall and tighter water supplies in mountain regions.
"Surface temperature and carbon dioxide concentration, two of the more publicly recognized indicators of global-scale climate change, set new highs during 2016", the report explains, "as did several surface and near-surface indicators and essential climate variables".
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The NOAA report is a federal report and is still in the draft stage.
According to the global report released on August 10, the year 2016 has set the newest record for highest air temperature, highest sea surface temperature, highest rise in sea levels, highest concentration of carbon emissions, and most extensive drought worldwide. Authors of the subsection of that report, however, said they've seen no sign that might happen.
Energy Secretary Rick Perry testifying before the Senate Energy Committee in June said: "I did not think that Carbon dioxide was the primary knob that changes it".
"Arctic air temperatures continue to increase at double the rate of the global temperature increase, and this increase can be linked directly to changes in the Arctic environmental system", the report found. His stance sets the U.S.at odds with almost every other nation on Earth, all but two of which are part of the 2015 Paris agreement to try to cap global warming to no more than 2 degrees Celsius over pre-industrial levels by significantly reducing greenhouse gas emissions.
Another record high was also achieved in global greenhouse gas concentrations.
In addition, the global average sea level rose to a new record high in 2016, and, according to the new report, was about 3.25 inches (82 mm) higher than that observed in 1993, when satellite record-keeping for sea level began. "The rate of warming and the rate of sea level rise in the global oceans are both accelerating".
Americans are already experiencing more extreme precipitation.
It is getting warmer everywhere, but in the contiguous United States, the West is warming the fastest.
Average sea surface temperature was the highest on record. Since 2000, the maritime temperature is increasing by 2.92 degrees Fahrenheit per century, much more than the 1950-2016 trend of warming at 1.8 degrees per century.
And for the 37th consecutive year, alpine glaciers retreated across the globe.