According to independent analyzes of the latest global temperature data from the US National Oceanic and Atmospheric Administration (NOAA) and the National Aeronautics and Space Administration (NASA), 2018 was the fourth hottest year on record for the planet Earth.
"The Earth's long-term warming trend continued in 2018 as sustained heat across large burial grounds and oceans resulted in the world's fourth hottest year in NOAA's 139-year climate record," the agency said in a statement. Separate analyzes of global temperature data performed by researchers at the United Kingdom Mete Office and the World Meteorological Organization reached similar conclusions, NOAA said.
Global temperatures in 2018 were 1.5 degrees Fahrenheit or 0.83 degrees Celsius warmer than 1951 to 1980, according to NASA's Goddard Institute for Space Studies (GISS). The average global surface temperature has risen about 2 degrees Fahrenheit or 1 degrees Celsius since the 1880s.
"2018 is once again an extremely hot year on top of a long-term global warming trend," says GISS director Gavin Schmidt in a statement. Schmidt added that so far global warming is driven by the increased greenhouse gas emissions pumped into the atmosphere due to human activities.
The average global temperature in 2018 was 1.42 degrees Fahrenheit or 0.79 degrees Celsius above the average of the 20th century, NOAA scientists stated. The average sea surface temperature was 1.19 degrees Fahrenheit (0.66 degrees Celsius) above average, while the ground surface temperature was 2.02 degrees Fahrenheit (1.12 degrees Celsius) above average – both the fourth highest markings on record.
Every year since 1977 the average global temperatures have been seen, making 2018 the 42th consecutive year that was warmer than it would have been if not for man-made climate change. Nine of the 10 hottest years ever registered have now taken place since 2005, and the last five years have been the five hottest. 2018's average global temperature placement behind only 2016, the hottest year on record, 2015, the second hottest and 2017, the third warmest.
Because the weather dynamics can affect regional temperatures, different soil areas can experience different amounts of heating in a given year. NOAA found that the annual average temperature in 2018 for the 48 neighboring states in the United States was the 14th hottest on record, while many of Europe, New Zealand and parts of the Middle East and Russia experienced record high country temperatures. Parts of the southern Pacific and parts of the North and South Atlantic also recorded high-speed temperatures over time.
The long-term warming trend of the earth continued in 2018 as sustained heat across large burial grounds and oceans resulted in the world's fourth hottest year in NOAA's 139-year climate record.
National Oceanic and Atmospheric Administration (NOAA)
However, the strongest warming trends have been observed in the Arctic region and the continued loss of sea ice. The average Arctic sea ice extent for December 2018 was 4.58 million square kilometers, an analysis by the US National Snow and Ice Data Center based on data from NOAA and NASA. It is 378,000 square kilometers or 7.6 percent less than the average for 1981 to 2010 and the fourth lowest December rate since registrations began in 1979.
At the same time, the decline in the icebergs in Greenland decreases, and Antarctica contributes to the increase in sea level, GISS director Schmidt added, while rising temperatures lead to longer fire seasons and more severe extreme weather conditions. "The effects of long-term global warming are already being felt – in coastal floods, heat waves, intense rainfall, and ecosystem change," Schmidt said.
For example, the United States experienced 14 "billion dollar weather and climate disasters" last year, claiming 247 people's lives and causing $ 91 billion in damage. "Both the number of events and their cumulative costs are ranked fourth highest since records began in 1980," NOAA said.
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