Climate change caused by human activity is observed in all regions of the planet and is becoming more and more intense, and some of its processes are already irreversible. This is stated in the new report of the UN Intergovernmental Panel on Climate (IPCC).

The report is 3,949 pages long, prepared by 234 experts from 66 countries, drawing on the results of 14,000 scientific papers over the past decade.

This report is the first major scientific review of climate change since 2013..

The document was published today in Geneva, it was signed by representatives of 195 countries.

The researchers came to the following conclusions:.

The past five years have been the hottest on record since 1850..

The main cause of global warming is greenhouse gas emissions from human activities.

Scientists estimate the current impact of natural sources of climate warming, such as the sun and volcanoes, as close to zero..

The entire climate system of the Earth is changing. These changes affect the state of the atmosphere, oceans, ice sheets and the Earth's surface.. Many of these changes are unprecedented, and some trends, such as rising sea levels, cannot be reversed in the coming centuries or even millennia..

Prolonged heat waves will increase and cold seasons will shrink in the coming decades..

The world runs the risk of not meeting the Paris Agreement goal of keeping global average temperatures within 1.5 ° C above pre-industrial levels by mid-century. This ceiling is expected to be broken as early as 2040.

However, by significantly reducing harmful emissions into the atmosphere, including greenhouse gases, it is possible in a short time to significantly improve air quality and stabilize the global temperature.In the event of a global warming of two degrees Celsius, agriculture will suffer, first of all, and the pressure on health systems will increase..

Climate change affects rainfall patterns. At high latitudes, the probability of precipitation increases, while on the territory of most of the subtropics, it decreases..

In coastal areas, the trend of rising sea levels will continue in the 21st century, which in turn will contribute to more frequent and severe low-lying flooding and soil erosion..

Further warming will intensify melting permafrost, loss of snow cover and melting of glaciers in the Arctic.

Changes in the state of the world's oceans will cause more frequent tides of warm currents, which will affect the ecosystem of the ocean and the situation of people who live off fishing.

UN Secretary General Antonio Guterres called the report " "