The seven years between 2015 and 2021 will likely be the warmest on record to date, the World Meteorological Organization (OMM), in a report in which it warns that the climate Enter “unknown territory”.
This annual report on the state of the climate “is based on the latest scientific data that shows that the planet is changing before our eyes,” said the secretary general of the HIM-HER-IT, António Guterres, cited in the text.
“From the deep ocean to the mountain tops, from melting glaciers to relentless extreme weather events, ecosystems and communities around the world are being destroyed,” he added.
The text, drawn up from observations on the ground and through satellites of meteorological services from around the world, is published at the beginning of the conference on the climate change de la ONU, COP26, this Sunday.
The Scottish town of Glasgow It hosts this key conference, in which the international community must strengthen its fight to limit global warming and ideally place it at a maximum of + 1.5ºC.
COP26 “must be a turning point for people and the planet,” Guterres said.
The report is based on the historical records of temperatures on the planet, and in particular uses the period 1850-1910 that the UN climate experts (IPCC) use as a basis to compare with today.
Humanity is currently emitting much more than twice the emissions of greenhouse gases about that time.
However, these historical records do not take into account previous meteorological phenomena, which are recorded thanks to climatic paleontology.
Alarming tone
The tone of the report from the OMM It is alarming, and it links droughts, forest fires, major floods in different regions of the planet with human activity.
“2021 is less warm than recent years due to the influence of a moderate episode of The girl which occurred at the beginning of the year. La Niña has a temporary cooling effect on the global average temperature and affects regional meteorological and climatic conditions. In 2021, the La Niña seal was clearly observed in the tropical Pacific, “the text recalled.
However, the average temperature of the last 20 years exceeds the symbolic barrier of + 1 ° C for the first time.
“The persistent above-average rainfall during the first half of the year in some parts of northern South America, especially in the northern part of the South American basin. Amazons, caused severe and long-lasting floods in the region, “the text added.
And at the same time, “for the second year in a row, there were major droughts that ravaged much of the subtropical region of South America. Rainfall was well below average over most of southern South America. Brazil, Paraguay, Uruguay and the north of Argentina“.
Experts acknowledge that they have used a system of “rapid attribution”, that is, the study of extreme natural events quickly after they have happened, to determine to what extent they are the responsibility of human activity.
“The IPCC noted that there has been an increase in heavy rainfall in East Asia, but there is a low level of confidence regarding human influence,” the text acknowledges, for example.
Reference-www.eleconomista.com.mx