Wednesday, December 1

2018 was the fourth hottest year in history, and the warming trend has not stopped due to high temperatures for four consecutive years.

2018 was the fourth highest average global temperature in observation history, the World Meteorological Organization (WMO), NASA, and the National Oceanic and Atmospheric Administration (NOAA) recently announced. It has become clear that the record high temperature for the fourth consecutive year has not stopped the global warming trend.

According to the WMO, the average global temperature in 2018 is 14.68 degrees, 1.0 degrees higher than the pre-industrial standard of 1850-1900. It was not as high as 2016, when it recorded the highest average temperature in the history of observation, but it was the fourth highest after 2015 and 2017, which was the second and third at the same temperature. This is the fourth consecutive year of record high temperatures since 2015. In addition, the top 20 of the hottest years in the history of observation are concentrated in the last 22 years.

NASA also announced that the average global temperature in 2018 was 0.83 degrees higher than the average from 1951 to 1980, and has risen once since the 1880s. “Most of the warming is due to increased greenhouse gas emissions,” he asserts. NOAA also announced that the average combined surface temperature of land and sea in the world in 2018 was 0.79 degrees higher than the average of the 20th century.

“The extreme weather in 2018 affected many countries and millions of people with devastating effects on the economy and ecosystems,” said WMO Executive Secretary Tarras.

The Paris Agreement, an international framework for preventing global warming, aims to reduce greenhouse gas emissions to virtually zero in the second half of this century and to limit temperature rises from before the Industrial Revolution to less than 2 degrees Celsius, preferably 1.5 degrees Celsius. The data released this time show that global warming has already progressed by more than half of this target.

Difference between the average surface temperature of land and sea in 2018 and the average temperature of 1950-81. Conspicuous rise in the Northern Hemisphere (provided by NASA)Difference between the average surface temperature of land and sea in 2018 and the average temperature of 1950-81. Conspicuous rise in the Northern Hemisphere (provided by NASA)
A graph showing the temperature rise of major research institutes in the world related to weather. The upward trends are almost the same (provided by NASA)A graph showing the temperature rise of major research institutes in the world related to weather. The upward trends are almost the same (provided by NASA)