The average temperature for Earth last year was the highest since 1880.
Scientists at the National Oceanic and Atmospheric Administration found that the average temperature across global land and ocean surfaces was 1.62°F (0.90°C) above the 20th century average last year. Similar records for last December showed it was the highest for any month in 136 years.
Last year’s number surpassed 2014’s previous temperature mark by 0.29°F (0.16°C), the largest margin by which the annual global temperature average has been broken. The warmth was broadly spread across different regions worldwide, NOAA said.
The worldwide temperature average was also dangerously close to the 1°C mark above the pre-industrial era, a significant milestone that scientists say would pose “significant risks” to the ecosystem if the ceiling was breached.
NOAA’s report corresponds with previous data compiled by the World Meteorological Organization, which last November predicted that 2015 would be the hottest year ever, and would cap a span that the agency says was the warmest five-year period. Other national agencies in Japan and Britain are expected to announce similar results over the coming weeks, the New York Times reported.
While a significant portion of the increase in last year’s temperatures can be attributed to El Niño—the weather pattern that causes rising sea surface temperatures in the Pacific Ocean—scientists point to global warming effects caused by human emissions of greenhouse gases as a key culprit. The consecutive years of historically warm temperatures have caused some to note the Earth may be on a course towards rapid global warming.
“Is there any evidence for a pause in the long-term global warming rate?” Gavin A. Schmidt, head of NASA’s climate-science unit, told the New York Times. “The answer is no. That was true before last year, but it’s much more obvious now.”