IPCC AR6'S VIEWS ON POTENTIAL IMPACTS AND HARNESS OF SOLAR RADIATION MODIFICATION ON NATURE AND SOCIETY
Discussions on solar radiation modification(SRM)to harness global climate change in academic domain have been rising.This paper gives an interpretation of IPCC ARR regarding its SRM's risks and obstacles on nature and society.SRM serves as an imperfect supplement in carbon emission reduction and removal,can offset radiation from manmade green gas emission through influencing the earth's radiation balance,reaching a fast cooling down and decrease other climatic hazards,but SRM has no solution to source of green gas,whose impacts on nature and human will remain with its rising concentration.Effectiveness and potential impacts of SRM is of spatial heterogeneity,and a long-term risk may be brought to human and nature upon its execution,uncertain on the crops production,human's health and eco-system.Decision must consider the regional heterogeneity and long-term risks to avoid its negative impacts on vulnerable areas and to human's offsprings.Slow research advances,low public recognition and ethic concept,and imbalanced nation's interests impedes SRM's scientific tests and international harness.SRM's research is challenged by unreliable evaluation conclusion,doubtful assumed rationality and future uncertainty.The current scientific basis cannot effectively support SRM's international harness.Nations with different interests,values and geopolitics are hard to reach agreement on SRM.Lack of official responsibilities and laws may bring new risks to international cooperation and peace.SRM's international harness covers policies,laws,science,public participation and technical supports,which shall be jointly developed with technical research.
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