Reflecting on COP26 from the perspective of COP28 allows for an assessment of the progress made towards the ambitious goals set at the 2021 Glasgow climate conference. COP26 aimed to secure global net zero by mid-century and limit global warming to 1.5 C degrees, underscoring the urgency of climate action. This summary reviews the conference's key outcomes and commitments, providing a basis to evaluate their implementation and effectiveness by COP28.

The key goals of COP26 included achieving global net zero and limiting warming, with strategies focusing on reducing emissions to reach net zero by 2050 through phasing out coal, curtailing deforestation, transitioning to electric vehicles, and increasing renewable energy investments. Adapting to protect communities and natural habitats was emphasized, highlighting the importance of safeguarding ecosystems and human settlements from climate change impacts. Mobilizing finance was a major aim, seeking to secure at least $100bn annually in climate finance for mitigation and adaptation in vulnerable regions. Furthermore, collaborative action and finalizing the Paris Rulebook were stressed, highlighting the need for finalizing the Paris Agreement’s guidelines and enhancing global cooperation against the climate crisis.

The main outcomes from COP26 included the non-binding Glasgow Climate Pact, extending the Paris accord, and outlining decisions to combat climate change. The completion of the Paris Rulebook provided guidelines for implementing the Paris Agreement, encompassing emissions reporting transparency, common emissions targets timeframes, and standards for international carbon markets. Additionally, sector-specific agreements were significant, with notable commitments in forest conservation, methane reduction, automotive emissions, and private finance. This included an agreement to reverse forest loss by 2030 and to phase down coal power.

Responses and reception to these outcomes were mixed. Leaders like UK's Archie Young expressed satisfaction, while UN's António Guterres described the agreements as a "compromise." European Commission's Ursula von der Leyen and the Maldives’ Environmental Minister, Shauna Aminath, emphasized the urgency for ongoing efforts and the existential threat for vulnerable nations. Critiques from environmental groups targeted the Glasgow Pact for not fully addressing the urgency of fossil fuel phase-out and questioned the feasibility of maintaining temperature rises below 1.5 C degrees.

From the viewpoint of COP28, evaluating the tangible actions taken in response to these commitments is crucial. The effectiveness of the Glasgow Climate Pact and the Paris Rulebook can be gauged based on progress in emission reductions, coal phase-out, renewable energy transition, and climate finance mobilization. The response of nations to commitments, particularly in deforestation and automotive emissions, will indicate the level of global cooperation and sincerity in addressing the climate crisis. Additionally, assessing adaptation measures and support for vulnerable nations is essential to understand the real impact of COP26 agreements. This retrospective analysis serves as a measure of the actual progress against the ambitious goals set during COP26.