2021-01-11

New data shows: 2020 is the hottest year on record, tying the 2016 record

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New data shows: 2020 is the hottest year on record, tying the 2016 record

These data come from the European Union’s Copernicus Plan, which consists of the Copernicus Climate Change Service (C3S) and the Copernicus Atmospheric Monitoring Service (CAMS) composition. The C3S data set shows that the global average surface temperature in 2020 is about 1.25°C higher than the baseline from 1850 to 1900, and 0.6°C higher than the reference period from 1981 to 2010.

This makes 2020 the hottest year on record in Europe, where the temperature climbed to 1.6°C above the 1981-2010 average and higher than the previous record holder in 2019 Out of 0.4°C. But the biggest surge occurred in the Arctic, where an unprecedented heat wave helped the temperature in the region soar by more than 6°C from the 1981-2010 average.

New data shows: 2020 is the hottest year on record, tying the 2016 record(1)

According to Copernicus and World Weather According to statistics of the World Organization (WMO), the 6 warmest years on record are the last 6 years, and the top 20 all occurred in the last 21 years. The decade from 2011 to 2020 is also the hottest decade on record, continuing the obvious upward trend since the 1980s.

But what makes the new hottest year record particularly worrying is that due to the La Niña event, temperatures in parts of the southern hemisphere are below average, and La Niña is a weather pattern related to cooling. This is not a good sign for future years under El Niño. El Niño is an opposite weather pattern, which has a warming effect.

“Record-setting warm years usually coincide with strong El Niño events, as was the case in 2016,” said WMO Secretary-General Petteri Taalas. “We are now experiencing the La Niña phenomenon, which has a cooling effect on global temperature, but it is not enough to brake this year’s high temperature. Although the current La Niña situation, this year has seen a record close to the previous record in 2016. High temperature.”

New data shows: 2020 is the hottest year on record, tying the 2016 record(2)

At the same time, the Copernicus Project also recorded the concentration of carbon dioxide in the atmosphere. The global average highest carbon dioxide concentration reached 413.1ppm, a record high. Among them, an observatory in Hawaii recorded a monthly high of 416.21ppm in May 2020.

The year-on-year growth of carbon dioxide concentration in 2020 has slowed down, mainly due to the COVID-19 pandemic and subsequent shutdowns. This figure is 2.3ppm/year, which is a decrease from 2.5ppm/year in 2019, but this is not enough to have much impact on climate change.

More details about the 2020 climate will be released in various reports by WMO and Copernicus in the coming months.