COP25 “Effects of ecosystems with a short period of remaining snow due to global warming”

COP25 “A short period of snow remaining due to global warming has a short impact on the ecosystem”

At COP25 held in Spain, a researcher from a specialized agency of the United Nations reported that the period of snow remaining due to global warming has become shorter and the ecosystem has begun to be affected.

This was reported by researchers from the United Nations IPCC = “Intergovernmental Panel on Climate Change” made by scientists around the world.

In the report published in September, the IPCC reported that the average period of snow remaining due to global warming has been shortened by 5 days in 10 years. Compared to the period, the depth of snowfall may be reduced by up to 40%.

Researchers have pointed out that the number and distribution of animals and plants have already changed in the high mountain area, and there is a risk that the lack of snow will cause water shortages, avalanches and landslides are likely to occur in the future. I was complaining that there was.

And “regions that have been covered by snow and glaciers are surprisingly vulnerable to climate change. Decisions made in the future will determine the degree of impact in the future,” he said. Asked to do.

Affects the Winter Olympics and Para

Some studies point out that global warming will affect the Winter Olympics and Paralympics.

Researchers from Canadian, American, and Chinese universities predicted the impact of further global warming in the 21 Olympic Winter Games and Paralympics from 1924 to 2022 . The indicator was a report submitted by the organizing committee of the venue to the IOC = International Olympic Committee.

Many venues pointed out that the minimum temperature during the day stays below 0 degrees and that snow can be kept above 30 centimeters is important for the sport to run smoothly. .

If the world's average temperature rises by about 4 degrees at the end of this century compared to before the Industrial Revolution, a place where these two points can be predicted to be established with a probability of 90% or more is a “reliable venue”, a so-called suitable place. Places that are less than 75% on the one hand are “untrusted venues”, so-called unsuitable places, and places that are more than 90% alone or both are predicted to be between 75% and 90% are “high risk” It was classified as "Venue".

As a result, out of 21 locations around 2050, 6 locations such as Vancouver and Sochi will become unsuitable, and the number of suitable locations is expected to decrease to 12. In 2100, 11 places such as Nagano City and Oslo will be unsuitable, and only 8 will be suitable.

Furthermore, the Paralympic Games will be held in March, so it will be more affected and the number of suitable sites will be reduced to 8 around 2050 and only 4 in 2100. Sapporo City is said to be in danger in 2100.

“The Olympics have been held in one country so far, but you may have to consider playing in multiple countries where conditions are met,” said Daniel Scott, a research team representative at the University of Waterloo in Canada. It ’s not going to cost me more now. ”

At the Sochi Olympics, the voice of “it ’s dangerous”

In 2014, at the Winter Olympics in Sochi, Russia, the temperature was higher than normal even in February, and the snow on the ski course melted and the players said that it was “dangerous”.

IOC = International Olympic Committee says, “Climate change has begun to affect most human activities, and sports is no exception. We plan the event taking into account the consequences of climate change.”