The acronym COP comes up every autumn in the news, often reduced to a simple climate summit. However, the term refers to a specific legal mechanism, rooted in international law since the early 1990s, and its scope goes far beyond just carbon emissions.
Three conventions, three distinct COPs: a framework often confused
A common misunderstanding is to speak of “the” COP as if there were only one. The Earth Summit in Rio in 1992 gave rise to three distinct environmental conventions, each with its own Conference of the Parties.
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The most publicized one concerns climate: it is the United Nations Framework Convention on Climate Change (UNFCCC). The second pertains to biodiversity (CBD), and the third addresses the fight against desertification (UNCCD). Each convention organizes its own sessions, with separate schedules, presidencies, and agendas.
When the media mentions “COP30 in Brazil,” they are referring to the thirtieth session of the climate COP. Understanding the definition of COP in French requires keeping this distinction in mind, as the decisions made in each conference fall under different legal frameworks.
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Climate convention and COP: the legal mechanism behind the negotiations
The term “Parties” does not refer to participants in the usual sense. In international law, a Party is a state that has ratified the convention and is committed to adhering to its provisions. Almost all countries in the world are Parties to the UNFCCC, which gives these conferences a unique scope.
The COP is the supreme decision-making body of the convention. It is responsible for adopting protocols, amendments, and binding decisions. The Kyoto Protocol (1997) and the Paris Agreement (2015) are both texts adopted during sessions of the climate COP.
Concrete functioning of a session
A session typically lasts two weeks. The first week is dedicated to technical negotiations among delegations. The second week sees the arrival of ministers and heads of state for the “high-level segment,” where political agreements are concluded.
Decisions are made by consensus, meaning that a single state can block a text. This mode of operation explains why final formulations are often perceived as compromises that fall short of scientific recommendations.
- Party States negotiate and adopt texts (protocols, decisions, work programs).
- Observers (NGOs, businesses, local authorities, scientific institutions) participate in the debates but do not vote.
- The rotating presidency is held by the host country, which sets the priorities for the session.
From Kyoto to Paris: what the COPs have actually produced
The Kyoto Protocol, adopted at COP3, imposed quantified emission reduction targets solely on industrialized countries. The United States never ratified it, and several countries withdrew before the end of the commitment period. The results remain mixed in terms of measurable outcomes.
The Paris Agreement, concluded at COP21, changed the approach. All countries, including emerging economies, submit nationally determined contributions (NDCs) that are reviewed upward every five years. The central goal is to limit warming to well below 2 °C compared to pre-industrial levels.
However, the Paris Agreement does not provide for any penalties in case of non-compliance with commitments. The mechanism relies on transparency and collective pressure, not legal enforcement. Field feedback varies on this point: some analysts see it as an effective diplomatic lever, while others view it as a structural weakness.
COP30 in Brazil: towards more operational conferences
The Brazilian presidency of COP30 has defined six sectoral “action agendas” to help states fulfill their climate commitments. This approach marks a notable evolution: COPs are no longer limited to setting global targets; they are attempting to structure roadmaps by sector (energy, agriculture, transport).
The social dimension is also taking on an increasingly significant role. The preparatory work for COP30 explicitly incorporates poverty reduction, strengthening vulnerable communities, and the notion of just transition. A dedicated work program (Just Transition Work Programme) has reached an institutional milestone, with the prospect of an international technical cooperation mechanism.
The known limits of the process
COPs remain dependent on consensus among nearly two hundred states with divergent interests. The available data do not allow for a conclusion that current commitments are sufficient to meet the trajectory of the Paris Agreement. The gap between announcements made in session and the national policies subsequently implemented is a recurring criticism.
The influence of industrial lobbies in negotiations is also a topic of debate. The massive presence of representatives from the fossil fuel sector during some recent sessions has raised questions about the independence of the discussions.
- National contributions remain insufficient compared to the trajectories recommended by the scientific community.
- The climate financing promised to developing countries is lagging, as recognized by the UN institutions themselves.
- The multiplication of COPs (climate, biodiversity, desertification) raises questions about the coherence between different environmental negotiations.
The framework of the COPs has produced texts that have structured global climate diplomacy for three decades. Their ability to transform these commitments into measurable actions depends less on the mechanism itself than on the political will of the Party States between sessions.