Climate crisis: sensational snowfall in the Arabian desert



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Climate crisis: sensational snowfall in the Arabian desert

Clamorous snowfall on the Tabuk mountains, in the Arabian desert, after a steep drop in temperature during the night. As reported by our colleagues at Greenme.it, the videos of the exceptional snowfall have gone viral all over the web.

Snowfalls are not unusual in the mountains of South Arabia, but the exceptional range of the latter makes us reflect on the climate change taking place. In Saudi Arabia, temperatures vary from region to region due to its diverse landscape which includes mountains, islands, deserts, caves and valleys.

Ozone hole: record in 2021 for size and duration

"Both Antarctic ozone holes of 2020 and 2021 were quite large and exceptionally long-lasting.

These two exceptionally prolonged and consecutive episodes are not an indicator that the Montreal Protocol is not working, as, without it, would have been even more extensive. Interannual variability due to weather and dynamic conditions can have a significant impact on the size of the ozone hole, overlapping with long-term recovery.

CAMS also monitors the amount of UV radiation they reach. the Earth's surface, and in recent weeks we have observed very high UV indices in some areas of Antarctica located under the ozone hole. The data collected, together with our forecasts, allow us to monitor the ozone season and compare the its development with that of the last 40 years.

" These are the words of Vincent-Henri Peuch, director of Copernicus Atmosphere Monitoring Service, to explain what happened over Antarctica in 2020 and 2021 due to the ozone hole. As reported by our colleagues at Greenme.it, in fact, the 2021 ozone hole is one of the largest and longest ever measured, according to Copernicus Atmosphere Monitoring Service.

Copernicus scientists said: "Substances containing chlorine and bromine accumulate within the polar vortex where they remain chemically inactive in the dark. The temperatures that occur in the vortex can drop below -78 degrees Celsius and the formation of ice crystals in polar stratospheric clouds, which play an important role in chemical reactions.

When the sun rises above the pole, solar energy releases chemically active chlorine and bromine atoms into the vortex which rapidly destroy ozone molecules, causing the formation of the hole."