Global warming breaks more records – 07/02/2019

Global warming continues to break records, with worrying predictions for what will happen. This week, the World Meteorological Organization (WMO) has warned the past four years they were the hottest that were recorded.

The WMO has announced that the global average temperature on the Earth's surface in 2018 exceeded by about 1.0 ° C the levels of the pre-industrial era (1850-1900). "This year (2018) is ranked fourth among the hottest that have been found," said the UN agency, which sees in these data confirmation of global warming caused by record levels of greenhouse gases in the atmosphere.

"With 1.2 ° C more than in the pre – industrial era, the year 2016, marked by the influence of a powerful Child, it's always the hottest year"Addition of the agency with reference to the warm equatorial Pacific current." In 2015 and 2017, the average temperature difference from pre-industrial values ​​was 1.1 ° C ".

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UN takes as reference the year 1850, the date when systematic temperature readings began. However "it's much more important observe the long-term evolution of temperature (…) to be clbadified between different years, "said WMO Secretary-General Petteri Taalas, who recalled that in the past 22 years, the 20 warmest have been recorded.

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"Extreme weather events or significant impacts have affected several countries and millions of people last year – he said – the international community must give highest priority to reduce greenhouse gas emissions and climate adaptation measures. "

The outlook for this year is not encouraging. Australia experienced the hottest month of all time, while a cold freeze hit several parts of North America last week. In Argentina, an unprecedented heat wave in Patagonia has occurred in recent days, which has been highlighted by the WMO itself in a recent report.

Regarding the cold snap in the eastern United States, Taalas said that "it certainly would not contradict the reality of climate change". The expert explained that "the Arctic is overheating twice as fast as the world average (…) What happens at the poles is not limited to the poles, but influence weather and climate conditions in other regions, where live hundreds of millions of people ".

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At the study of the other UN three important national agencies who go in the same line.

NASA and the US National Oceanic and Atmospheric Administration (NOAA) also released an identical report for 2018 simultaneously and declare it the fourth hottest year, given the records dating back to 1880. However, these agencies add an extra detail: in fact, they have been the last five years, not just four, the hottest ever recorded.

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And add other data: The Arctic and Antarctic ice sheet was at the second lowest level ever. Last year, there were 14 climate-related natural disasters. "The 14 events, in total, killed 247 people and cost $ 91 billion," NOAA said.

NASA and NOAA climatologists said 2018 was warmer than the previous three years due to accidental climatic variations. "It does not matter if the changes are minimal from one year to the next. The trend is inexorably on the rise and will continue like this – said Stefan Rahmstorf, a climatologist at the Potsdam Institute. Those who deny this fact do not accept physics. "

The Bureau of Meteorology of Great Britain has also badyzed the global temperatures of the past four years, reached the same conclusions and, using computer simulations, predicted that average temperatures will reach between 14.73 and 15.27 degrees Celsius. , that is to say will surpbad those of the last four years.

External scientists, such as Natalie Mahowald of Cornell University, pointed out that the predictions coincided with what researchers have known about warming and natural variability. The obvious long-term trend of constant warming facilitates more accurate prediction of rising temperatures in the more immediate future, said NASA Senior Climate Scientist Gavin Schmidt.

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In March, WMO will publish its statement on the state of the world's climate, with a wealth of information and detailed statistics. The agency collects data from NOAA, the Goddard Institute for Space Studies (GISS), NASA, the Hadley Center of the British Meteorological Service, and the University of London's Department of Climate Research. East Anglia (United Kingdom).

Source: agencies