Global Temperatures In 2020 Among Highest On Record World Meteorological Organization
Since record-keeping began in 1880, global yearly temperatures have averaged a 0.14-degree increase per decade. It was revealed the briefing on Thursday (early Friday morning in the Philippines) during the 101st American Meteorological Society Annual Meeting.
However, NASA said 2020 is now tied for the No. 1 spot along with 2016. The warmest ever years recorded are 2016, 2019 and 2020, the WMO stated.
"The trend is concerning because the top 10 warmest years on record have all occurred since the year 2000 and the top six warmest years have all happened in the last six years", she says.
Additionally, "we still increased [atmospheric] carbon dioxide by two parts per million past year", Gavin Schmidt, climate scientist and director of NASA's Goddard Institute for Space Studies in New York City, told Space.com during a media teleconference Thursday as part of the 101st American Meteorological Society Annual Meeting. Understanding such long-term climate trends are essential for the safety and quality of human life, allowing humans to adapt to the changing environment in ways such as planting different crops, managing our water resources, and preparing for extreme weather events.
According to National Oceanic and Atmospheric Administration scientists, 2020 almost surpassed 2016 as the hottest year ever recorded.
Continuing the planet's long-term warming trend, the year's globally averaged temperature was 1.84 degrees Fahrenheit (1.02 degrees Celsius) warmer than the baseline 1951-1980 mean, according to scientists at NASA's Goddard Institute for Space Studies (GISS) in NY. We are headed for a catastrophic temperature rise of three to five degrees Celsius this century.
JMA monitors the long-term change of the global average surface temperature anomalies to monitor global warming.
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As in previous years, there were significant socio-economic impacts in 2020.
According to the Paris Climate Agreement, global average temperatures need to be controlled well below two degrees Celsius of the pre-industrial era. The past four decades have all been warmer than the one before.
NASA's data also includes polar regions, unlike NOAA's.
NASA's analysis incorporates surface temperature measurements from more than 26,000 weather stations and thousands of ship- and buoy-based observations of sea surface temperatures. The GISS temperature analysis (GISTEMP) is accurate to within 0.1 degrees Fahrenheit with a 95 percent confidence level for the most recent period. Greenhouse gas concentrations, ocean heat content, global mean sea level, sea ice extent and extreme events are also factors. The link between GHG and global temperatures has been present throughout our history.
The WMO pointed to sustained heat and wildfires in Siberia, diminishing Arctic sea ice and record-breaking hurricanes in the Atlantic as being among the climate events that most stood out in 2020. The satellite surface temperature record from the Atmospheric Infrared Sounder (AIRS) instrument aboard NASA's Aura satellite confirms the GISTEMP results of the past seven years being the warmest on record. "Their effects, together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have been the dominant cause of the observed warming since the mid-20th century".
Gavin Schmidt, director of NASA's Goddard Institute for Space Studies, added: "The natural processes Earth has for absorbing carbon dioxide released by human activities - plants and the ocean - just aren't enough to keep up with how much carbon dioxide we're putting into the atmosphere".
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