The IPCC, an intergovernmental panel on the climate change assessment agency established by the United Nations Environment Program and the World Meteorological Organization, has published a report for the first time in eight years, and here, for the first time, it is determined that global warming is caused by humans.
At the 54th General Assembly and the 4th Meeting of the 1st Working Group, which were held online from July 26 to August 6, 2021, the IPCC published the 6th Evaluation Report 8 years after the 5th Evaluation Report in 2013. announced. The conference was attended by more than 300 representatives of governments from different countries, as well as international organizations such as the World Meteorological Organization and the Climate Change Convention.
What draws attention in this report is that the IPCC is the first to conclude that global warming is caused by humans. The IPCC has been strengthening its expression on the impact of human activities on global warming every year since the first assessment report released in 1990. was only stating that it was likely caused by human activity, but this time, for the first time, used the assertive statement that there is no doubt that human influences have warmed the atmosphere, oceans and land.
The evidence is the temperature change. Looking at the global average 10-year temperature trend, the observed value has risen sharply since 1850, when the Industrial Revolution occurred. One of the conclusions of this report is that these warming effects are global. Extreme high temperatures are increasing all over the world, including North and South America, Europe, Africa, Asia, and Australia. Also, in most regions, the reliability of human contributions is considered high.
Similarly, for heavy rain, the area where the data was collected shows an increase without exception. Agricultural and ecological drought increased in 12 areas and decreased in only one area. In the socio-economic scenario SSP determined by the rate of achievement of greenhouse gas mitigation measures, the IPCC states that the global average temperature will continue to rise until at least the middle of this century in all emission scenarios considered in this report. The view is that global warming will exceed 1.5 to 2 degrees Celsius during the 21st century unless carbon dioxide and other greenhouse gas emissions are significantly reduced over the next few decades.
In the worst-case scenario, the Arctic sea ice is expected to disappear substantially from around 2050 to September, the pH near sea level will be less than 7.7, and the global average sea level will rise by 1m compared to 1900. The IPCC Working Group 1, who wrote this report, said that climate change is already affecting all regions of the world in various forms, and the changes we experience will increase as global warming progresses. , permafrost thawing and ocean acidification are projected to increase in the future. It is a red flag for mankind. Related information can be found here.