NASA Confirms 2018 Fourth Warmest Year in Continued Warming Trend

NASA Confirms 2018 Fourth Warmest Year in Continued Warming Trend

In 2018, that average was 0.83° C (1.5° F) warmer than the 1951 to 1980 mean.

NASA and NOAA's Annual Global Analysis for 2018, released yesterday having been delayed by the government shutdown, is backed up by independent reports from the UK's Met Office, the World Meteorological Organization, the Japanese Meteorological Agency, and the United Nations, so is pretty hard to argue against (though we are sure some will try).

At 4th warmest, only 2016, 2017, and 2015 have been warmer than 2018, and the past five years, taken together, are the warmest years in the modern temperature record.

Scientists at NASA and the National Oceanic and Atmospheric Administration (NOAA) on Wednesday announced that global temperatures in 2018 were the fourth hottest on record in the last 139 years.

Schmidt said that 2018 was "quite clearly the fourth warmest year on record and it was probably warmer than many hundreds of years before that". Land temperatures, they said, were more than 1.1 degrees Celcius warmer than the 20th-century average.

That warming is driven by the amount of greenhouse gases humans have introduced into the atmosphere, particularly in the least 100 years, Schmidt said.

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"The long-term trends are extremely robust", said Gavin Schmidt, the director of NASA's Goddard Institute for Space Studies. That would be warmer than the last four years. Additionally, parts of the southern Pacific Ocean and sections of the north and south Atlantic Ocean also saw record high sea-surface temperatures.

Changes in Arctic temperatures also contribute to an increase in extreme weather events as the jet stream, a circular current of air around the Arctic that is responsible for weather patterns in the Northern Hemisphere, gets disrupted.

The past five years were the warmest ever on record, a NASA official said on Wednesday in NY. Such cold weather has made it really hard for many to believe that global warming is real. The record is shown as a running five-year average.

Since then, there's been a clear and sharp upward trend - in fact, NOAA says that every year since 1977 has had an above-average temperature. "The trend is going relentlessly up, and it will continue to do so", Potsdam Institute climate scientist Stefan Rahmstorf said in an e-mail.

"If there was no warming of average temperatures, there would be about an even chance of a daily record high maximum or daily record low minimum occurring", said Meehl, who was not involved in the report. Record levels of man-made greenhouse gas emissions, mainly from burning fossil fuels, trap ever more heat.

If a warming planet were an Olympic sport, fourth wouldn't make the podium. Right behind Michael were the western US wildfires and Hurricane Florence, which both racked up $24 billion in damages, according to NOAA.

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