Photo: NASA / Goddard Space Flight Center
On this map, the red indicates temperatures beyond the normal; the blue, lower temperatures.
2018 has been the fourth warmest year ever recorded, concludes a new report from the u.s. space agency (NASA) and the u.s. Agency for ocean observation and atmospheric (NOAA).
The average global temperatures observed in 2018 exceeded 0.83 °C the years 1951 to 1980, have been observed by the scientists of the Institute Goddard on space research (GISS), a research center of NASA.
The temperatures measured in 2018 rank as well right behind those observed in 2016, 2017 and 2015.
“2018 was again an extremely hot, a year that is part of a warming trend in the long term “, stressed the director of GISS, Gavin Schmidt.
The world meteorological Organization (WMO), based in Geneva, went to the same conclusion Wednesday.
In its press release, the WMO notes that the average temperature at the earth’s surface in 2018 has exceeded about 1.0 °C that which prevailed in pre-industrial times (1850-1900).
“This year  ranks fourth among the hottest that has been recorded,” says the specialized agency of the UN, which also examines data collected by other government agencies around the world. “With 1.2 °C higher than the pre-industrial era, the year 2016, marked by the influence of a powerful El Niño events, maintains the status of warmest year. In 2015 and 2017, the difference of the average temperature compared to pre-industrial value was 1.1 °C. “
The UN is taking for reference the year 1850, on which date began the readings, systematic temperature.
But ” it is much more important to examine the long-term evolution of the temperature […] that to make a classification between the different years “, stressed the secretary-general of WMO, Petteri Taalas, recalling that over the past 22 years, there were the 20 warmest years ever recorded.
“Extreme weather events or high-impact have hit a multitude of countries and millions of people last year,” he continued. “The international community must give the highest priority to the reduction of greenhouse gas emissions and to measures for climate adaptation “, has he hammered.
And 2019 is not going to be under better auspices, has notified the WMO.
Australia has known the month of January the hottest ever recorded, while a severe cold snap descended on a part of the North America.
“The cold wave in the eastern United States certainly does not come to contradict the reality of climate change,” said Mr. Taalas. “The Arctic is warming at a rate two times faster than the global average. […] What is happening at the poles does not remain confined to the poles, but does influence the weather and climatic conditions in other regions, where live hundreds of millions of people, ” he recalled.
The WMO shall publish in march its statement on the state of the global climate, with a multitude of detailed information and statistics.
The agency collects data provided by the u.s. Administration for oceans and atmosphere (NOAA), the Goddard Institute for Space Studies (GISS), NASA, as well as by the Centre’s Hadley meteorological Service british and the research Section on the climate of the University of East Anglia, in the United Kingdom.