استاد دانشگاه تهران
عنوان مقاله [English]
Awarding half of the 2021 Physics Nobel Prize to climate change scientists, as well as holding the UN Climate Change Conference in Glasgow in October 2021 is the editorial pretext of this issue.
a) Syukuro Manabe & Klaus Hasselmann have been able to take a deep look at the nature and quantity of variables that shape and effect the earth's climate system. They laid a solid foundation for the development of physical climate models and increased the level of their reliability and outputs and also confirmed the man-made nature of global warming. Based on climate models, it is now possible to predict the future conditions of the earth and lands under different scenarios of human behaviors with the environment.
b) The Glasgow Climate Change Conference (COP26) has confirmed that the global average temperature has increased by 1.1 degrees Celsius since the beginning of the industrial revolution, and 90% of this increase, which is mainly due to greenhouse gas (GHG) emissions, is human-induced. The main motivation of the conference was to coordinate and commit countries to achieve the following goals: 1) Secure global net- zero emissions by the mid-century, and keep warming to 1.5 degrees Celsius to prevent catastrophic events; 2) Agreement and compatibility for protecting communities and natural habitats; 3) Collaborate to mobilize financial resources to implement these objectives; and 4) Finally work together to deliver and implement the goals of the Paris agreement (the detailed rules that make the Paris Agreement operational.
c) The quantity and quality of our national researches on climate change is evaluated positive, however it seems necessary to redefine research topics in the agricultural sector towards mitigation of agricultural-induced GHG emissions, and adaptation to climate change.
In conclusion, though, the achievements of the conference to save our planet are disappointing, but at the same time, the agreements reached are positive steps in slowing down the global warming.