Which is the hottest greenhouse gas

Hottest decade since 1850 : It's too warm on earth - and has been for ten years

According to the UN, the years 2010 to 2019 will probably go down as the hottest decade in history. This was announced by the UN on Tuesday at the World Climate Conference in Madrid. In 2019 alone, the temperature was 1.1 degrees Celsius above pre-industrial levels, said the World Meteorological Organization (WMO). 2019 is likely to be the second or third warmest year, the organization reported on Tuesday at the UN World Climate Conference in Madrid in its preliminary climate status report.

Temperatures have been rising since 1980

The restriction "with the greatest probability" in the assessment is necessary because the evaluation of the entire year will not be completed until March 2020. Since the 1980s, every decade has been warmer than the previous one, according to the WMO.

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As the organization reported on November 25th, the concentration of climate-damaging greenhouse gases in the atmosphere continued to increase dangerously. The CO2 concentration rose within one year from 405.5 ppm (parts per million particles) to a record level of 407.8 ppm. The reason for this are the climate-damaging greenhouse gases caused by human activity.

The average temperature of the oceans is also at a record high, and the oceans are 26 percent more acidic than at the beginning of industrialization. "If we do not take urgent action, we are heading for a temperature rise of more than three degrees by the end of the century, with increasingly harmful consequences for people," said WMO General Secretary Petteri Taalas. Extreme heat waves and floods, which once only occurred “once a century”, now occur regularly, said WMO General Secretary Petteri Taalas. From the Bahamas to Japan and Mozambique, people in many countries felt the "destructive power of tropical cyclones".

According to the Monitoring Center for Internally Displaced Persons (IDMC), ten million people were forced to flee within their own country in the first half of 2019 alone, seven million of them because of climate disasters. The reasons were mostly floods, storms or drought. The number of people displaced because of unusual weather extremes could triple to 22 million by the end of the year, the WMO has now warned.

Greta Thunberg expected at the climate summit

At the 25th World Climate Conference, which began in Madrid on Monday, the aim will be to finally put rules in motion with which the 2015 Paris Climate Agreement can be implemented. It stipulates that the states want to limit global warming to 1.5 degrees compared to the pre-industrial age. Currently, 187 of 197 signatory states have ratified the Paris Climate Agreement. Most recently, Russia's accession put climate protection activists in a good mood. Turkey, Iran, Yemen and Eritrea, among others, have not yet ratified the agreement.
The main focus of the negotiations in Madrid is on technical aspects.

The Swedish climate activist Greta Thunberg is also expected at the climate summit.

The 16-year-old arrived in Lisbon by catamaran on Tuesday morning. At the port, the young Swede, who became an icon of the climate protection movement, was expected by the mayor, cheering supporters of the Fridays for Future movement and a large media presence.

After a press conference and a few hours of rest, Greta Thunberg apparently wants to take the night train from Lisbon to Madrid to the climate summit on Tuesday evening. There she wants to discuss climate policy with the heads of state and government over the next few days. (AFP, dpa, Tsp)

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