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Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment

IPCC Chair Jim Skea suspended the 65th Plenary Session in Addis Ababa after delegates failed to agree on the timeline for the next major climate assessment. The deadlock threatens to delay critical scientific reports needed for the 2028 UN Global Stocktake.

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Illustration: The 65th Plenary Session of the IPCC in Addis Ababa was suspended after delegates failed to reach a consensus on the AR7 timeline.From: UN Climate Panel Chair Pushes for Urgent Resumption Following Stalemate Over Core Scientific Report

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The IPCC operates strictly by consensus, requiring agreement from all 195 member states to finalize administrative timelines.From: UN Climate Panel Chair Pushes for Urgent Resumption Following Stalemate Over Core Scientific Report ·
The unresolved AR7 publication schedule threatens to delay the scientific baseline needed for the 2028 UN Global Stocktake.From: UN Climate Panel Chair Pushes for Urgent Resumption Following Stalemate Over Core Scientific Report ·
The proposed September 2028 publication timeline is designed to feed directly into the UN's second global stocktake at COP33.From: Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment ·
About half of the lead authors and editors chosen for the AR7 cycle come from developing or transition economies.From: Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment ·
In 2024, the global average temperature exceeded 1.5 degrees Celsius above pre-industrial levels for the first time on an annual basis.From: Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment ·
Illustration: Despite the administrative deadlock, nearly 120 IPCC authors have pledged to continue their scientific reviews on schedule.From: UN Climate Panel Chair Pushes for Urgent Resumption Following Stalemate Over Core Scientific Report ·
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The United Nations Economic Commission for Africa is hosting the 65th IPCC session in Addis Ababa.From: Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment ·

Timeline

October 2026

  1. UN Climate Panel Chair Pushes for Urgent Resumption Following Stalemate Over Core Scientific Report
  2. Diplomatic Standoff at IPCC Addis Ababa Session Threatens to Delay 2028 Climate Assessment