The thermal history of the past four years! The increase in greenhouse gas emissions is the main cause of global warming

Xinhua news agency, Beijing, February 7 A number of authorities confirmed 6, 2015 to 2018 is the temperature record since 100 years ago with four years since the heat, which in 2018 is the history of the fourth years of heat.

The World Meteorological Organization issued 6 reports, both on land and sea, the degree of warming in the past four years extraordinary. "This is a clear sign of long-term climate change, and long-term climate changes and greenhouse gas concentration related record."

NASA and the National Oceanic and Atmospheric Administration and the British Meteorological Bureau released a report on the same day, the European Union and the "Copernicus climate change service project", the Berkeley Earth Institute report released earlier, have reached similar conclusions. The World Meteorological Organization report based on British and American Meteorological Agency data.

The World Meteorological Organization reported that in 2018 the global average surface temperature is about 14.68 degrees Celsius, compared with 1850 to 1900 industrial baseline high nearly 1 degrees Celsius, is fourth years since the hot temperature record.

The report said, affected by the strong El Nino event in 2016 is the hottest year, compared with the pre industrial baseline high 1.2 degrees Celsius; the global average temperature in 2017 and 2015 than the pre industrial level of 1.1 degrees Celsius, the two almost the same, the difference is less than one percent degrees celsius. In short, the history of the 20 hottest year in the past 22 years.

The British Meteorological Bureau forecast, from 2019 to 2023 may be hotter than in the past four years, the global average temperature for at least a year will have 10% probability than the pre industrial level high 1.5 degrees celsius.

Experts generally believe that human activities lead to carbon dioxide and other greenhouse gas emissions is the main cause of global warming, which in turn leads to extreme weather events such as hurricanes, heat and cold frequently.

"Many extreme weather events to climate change with our anticipation is the same," WMO Secretary General Petri Taras said, "this is what we need to face the reality. Greenhouse gas emission reduction and climate adaptation measures should become a priority among priorities of global response."

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The World Meteorological Organization and other countries related meteorological agency 6, also released a report that, from 2015 to 2018 since 100 years ago, four years since the heat temperature records, which in 2018 is the history of the fourth years of heat.

Although the study method of various institutions are different, but consistent with the conclusion: whether the land or sea, degree of warming in the past four years "extraordinary". "The long-term trend of global warming That's final".

WMO Secretary General Petri Taras said that the long-term upward trend of temperature than the individual year ranking is more important. In the past 22 years, with 20 years history of the heat. The organization pointed out in the report, this is a clear sign of long-term climate change, and long-term climate changes and greenhouse gas concentration related record.

Climate change "a 2015 Paris agreement" proposed in this century the global average temperature compared with the pre industrial level increased in the control range of 2 degrees Celsius, and the temperature control in 1.5 degrees Celsius to. According to the World Meteorological Organization data released in the past four years the average global temperatures were higher than pre industrial levels of about 1 degrees celsius.

The British Meteorological Bureau issued a forecast that 2019 to 2023 may be hotter than in the past four years, the global average temperature for at least a year will have 10% probability than the pre industrial level high 1.5 degrees celsius. Although this does not mean that the limit set in advance of the break "Paris agreement", because the relevant evaluation standard of 30 years is the average temperature for evaluation, but this conclusion is worrying.

The United Nations Intergovernmental Panel on climate change 10 last month released the report pointed out that if the realization of "1.5 degrees" target temperature, compared to the "2 degrees", the global water shortage population will be reduced by half; affected by high temperature, caused by haze and infectious diseases and deaths decreased; the number of lost habitat in vertebrates and plants less than half most of the world's coral reefs; survive; often encounter extreme hot weather reduced the population of about 420 million, suffered the abnormal high temperature weather population decreased by 64 million......

Experts generally believe that human activities lead to carbon dioxide and other greenhouse gas emissions is the main cause of global warming, which in turn leads to extreme weather events such as hurricanes, heat and cold frequently, and causes huge economic losses.

The National Oceanic and Atmospheric Administration report said that in 2018, the meteorological disaster event the United States experienced 14 single economic losses of more than $1 billion, and the cumulative number of disaster economic losses since 1980 were fourth. Among them, hurricane Michael caused economic losses of $25 billion, and the western United States fires and hurricane Florence caused economic losses of $24 billion each. In addition, at least 247 people died in the disaster.

Analysts pointed out that the recent U.S. experience cold weather and the trend can not deny climate change, to the United States from the "Paris agreement" provides the rationale.

"The eastern United States certainly cannot deny climate change in cold weather." Taras said. He pointed out that the warming of the Arctic is two times faster than the global average, a large number of melting of the Arctic sea ice is affecting areas outside the northern hemisphere arctic weather patterns, cold weather in the United States and other countries may be partly Arctic upheaval, so the "greenhouse gas emission reduction and climate adaptation measures should become a priority among priorities of global response".