2025 年 29 巻 2 号 p. 93-98
The Montreal Protocol and its Kigali Amendment primarily regulate production and consumption of ozone depleting substances (ODSs) and hydrofluorocarbons (HFCs), while the United Nations Framework Convention on Climate Change (UNFCCC) and the Paris Agreement focus on reduction of greenhouse gas (GHG) emissions including HFCs for mitigation of climate change. There is increasing attention to lifecycle refrigerant management (LRM) in the cooling sector as an effective measure for realizing mitigation potentials, and LRM has been elevated into an important part of the agendas of both the “ozone regime” and the “climate regime,” distinct policy and administrative systems that have evolved separately. This paper compares various aspects of the two regimes, such as norm setting, planning and implementation instruments, accounting and transparency through reporting, and financial mechanisms. It also points out gaps and proposes key areas of actions to accelerate LRM with strengthened implementation using a harmonized and mutually complementary approach.