1987年9月16日通過的《蒙特婁議定書》是迄今為止最普遍簽署的環境保護協議。
其每年幫助預防多達200萬例皮膚癌,並避免數百萬例白內障病例。
因此,每年9月16日定為臭氧層保護日,來紀念這場國際環境合作的勝利。
臭氧層
你可以把臭氧層想像成地球的防護罩,它的工作是吸收來自太陽的紫外線,特別是紫外線B(UV-B)和紫外線C(UV-C)等有害輻射。
科學家自1970年代以來,發現臭氧層每十年就遞減約4%。在兩極地區的某些季節,這種遞減速度更加驚人。
特別是在春季,科學家在南極上空觀測到臭氧量急劇減少,就像在臭氧層上留下一個大洞。實際上,這並不是真的有一個洞,而是表示臭氧層的含量異常稀薄,是一個異常的狀態。
臭氧層破壞者-氟氯碳化物
這些化學物質通常用於冷卻系統、噴霧劑,甚至一些家用品中。它們在大氣中被分解後釋放出會破壞臭氧分子的氯原子,導致臭氧層變薄。
《蒙特婁議定書》
該議定書於1987年通過,目標是控制並逐步淘汰對臭氧層有害的化學物質。這項國際努力取得了巨大成功,全球使用這些有害物質的量已大大減少。
臭氧層的恢復需要時間,所以我們必須持續關注並採取行動。國際臭氧層保護日提醒我們,每個人都可以通過減少使用有害化學物質,支持永續發展,並宣傳環保知識,來保護這個關鍵的生態系統。
我們的選擇可以鼓勵政府、企業和身邊的人參與保護臭氧層的行動,讓我們的星球能夠持續地為我們提供安全適存的生活環境。
以下為暑假到東眼山參加「氣候變遷營隊」的孩子們畫的『三格漫畫』
The Montreal Protocol, adopted on September 16, 1987, stands as the most universally endorsed environmental protection agreement to date. It annually aids in preventing up to 2 million cases of skin cancer and avoids several million cases of cataracts. As a result, September 16th is designated as Ozone Layer Protection Day each year, commemorating the success of international environmental cooperation.
The Ozone Layer
You can think of the ozone layer as Earth's protective shield. Its job is to absorb harmful radiation from the sun, especially ultraviolet-B (UV-B) and ultraviolet-C (UV-C) radiation.
Scientists have observed since the 1970s that the ozone layer has been depleting by approximately 4% every decade. In some seasons, particularly in polar regions, this depletion is even more alarming. In spring, scientists observed a significant reduction in ozone levels over Antarctica, resembling a hole in the ozone layer. In reality, there isn't a physical hole, but rather an abnormal thinning of ozone content, which is an unusual condition.
The Culprits - Chlorofluorocarbons (CFCs)
These chemicals are typically used in cooling systems, aerosol sprays, and even some household products. When they break down in the atmosphere, they release chlorine atoms, which destroy ozone molecules, leading to a thinning of the ozone layer.
The Montreal Protocol
The Montreal Protocol, established in 1987, aims to control and progressively phase out substances harmful to the ozone layer. This international effort has achieved significant success, with a substantial reduction in the global use of these harmful substances.
However, ozone layer recovery takes time, so we must continue to remain vigilant and take action. International Ozone Layer Protection Day reminds us that each individual can contribute by reducing the use of harmful chemicals, supporting sustainability, and promoting environmental awareness to protect this critical ecosystem.
Our choices can encourage governments, businesses, and those around us to engage in actions that ensure our planet continues to provide a safe and habitable living environment for us.
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