May 8
th
, 2025
Signs of human-induced climate change reached new heights since the issuance of my first
letter to the international community in March. The World Meteorological Organization’s
(WMO) State of the Global Climate report confirmed 2024 as the warmest year on record, and
the atmospheric concentration of carbon dioxide has reached its highest level in the last 800,000
years. We see clear signals of planetary distress, including increased ocean heat, decreased sea-
ice extents and glacier mass, and sea level rise.
With this second letter, the Brazilian incoming Presidency of the 30th session of the Conference
of the Parties (COP30) of the United Nations Framework Convention on Climate Change
(UNFCCC)
moves from vision towards action,
calling on the international community to
mobilize in the face of climate urgency.
In this time of serious geopolitical, socioeconomic, and environmental challenges, we must
unite to (1) reinforce multilateralism and the climate change regime under the UNFCCC, (2)
connect the climate regime to people’s real lives, and (3) accelerate the implementation of the
Paris Agreement by stimulating action and structural adjustments across all institutions that
can contribute to it.
United, we can reverse the dangerous trend towards a sequence of systems collapses in domino
effect. Together, we can build on and support each other, preventing a potentially devastating
chain-reaction by triggering instead a “chain of action,” for exponential low-carbon and
climate-resilient solutions. Though the challenge is immense, we must rise to face it.
This must be the time when nations and generations come together, combining the wisdom,
patience and maturity of the more experienced with the youth’s enthusiasm, idealism and
resourcefulness.
To contribute to an inflection point in our climate fight, I will be issuing a series of
communications to advance a global
Mutirão
around four fronts of action with a view to
COP30 and beyond:
(i) a process of global mobilization;
(ii) the Action Agenda;
(iii) formal UNFCCC negotiations - from the June sixty-second sessions of the Subsidiary
Body for Scientific and Technological Advice (SBSTA) and the Subsidiary Body for
Implementation (SBI) to the November COP30;
(iv) the Leaders’ Summit.
Please refer to the Portuguese version available at
https://cop30.br/pt-br/presidencia-da-
cop30/cartas-da-presidencia/segunda-carta-da-presidencia-brasileira
Please refer to the Spanish version available at
https://cop30.br/es/presidencia/cartas-de-la-
presidencia/segunda-carta-de-la-presidencia