2018 fourth hottest year on record

Earth’s long-term warming trend can be seen in this visualization of NASA’s global temperature record which shows how the planet’s temperatures are changing over time compared to a baseline average from 1951 to 1980. The record is shown as a runni

Earth’s long-term warming trend can be seen in this visualization of NASA’s global temperature record which shows how the planet’s temperatures are changing over time compared to a baseline average from 1951 to 1980. The record is shown as a runni

"Across the globe, 2018 was extremely warm, with only a few places that were below our normal period [which runs from 1951 to 1980]", Gavin Schmidt, a climate scientist and director of NASA's Goddard Institute for Space Studies, said during a news conference held to announce the report.

Globally, 2018's temperatures ranked behind those of 2016, 2017 and 2015.

All five of the hottest years on record have occurred in the last five years, according to global temperature data released Wednesday by NASA and the National Oceanic and Atmospheric Administration.

The average global surface temperature has risen above the 20th-century average by 0.79ºC.

"This warming has been driven in large part by increased emissions into the atmosphere of carbon dioxide and other greenhouse gases caused by human activities", Schmidt said.

Air and sea surface temperature data from 6,300 weather stations, ship and buoy observations, and temperature measurements from Antarctic research stations were analyzed. Scientists have linked climate change to more destructive hurricanes like Michael and Florence past year, and have found links to such phenomena as the polar vortex, which last week delivered bone-chilling blasts to the American Midwest and Northeast.

"The 20 warmest years on record have been in the past 22 years". However, individual years do see fluctuations due to phenomena such as El Nino and La Nina in the equatorial Pacific, said Deke Arndt, a scientist at NOAA's National Centers for Environmental Information in Asheville, North Carolina. We're no longer talking about a situation where global warming is something in the future.

Though there are minor variations from year to year, all five temperature records show peaks and valleys in sync with each other.

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.

This also means Toronto's temperature rose above the global average.

I'd like to get more stories like this. "Greenhouse gas emission reduction and climate adaptation measures should be a top global priority".

"Despite the recent cold snap across the Midwest and East Coast, the planet is still heating up, and the warming is unprecedented".

Hurricane Michael was responsible for $25 billion in damages, Hurricane Florence cost an additional $24 billion and the stretch of wildfires that scorched the western USA cost another $24 billion.

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