Warning on warming: On the UNEP report, Limiting Overshoot
The UN Environment Programme (UNEP) released a report titled "Limiting Overshoot," its first dedicated assessment of the likelihood and consequences of exceeding the 1.5°C global warming threshold set under the Paris Agreement
The report finds that crossing 1.5°C is now near-certain within the next few years, but argues that returning below this threshold later this century remains technically possible through an "overshoot, peak, and decline" pathway
The report estimates that even full implementation of current Nationally Determined Contributions (NDCs) and net-zero pledges would still cap warming around 1.8°C rather than 1.5°C, and calls for a major scale-up of emissions cuts, carbon removal, and adaptation finance
Editorial commentary following the report has argued that India's climate stance needs to move from a purely defensive, historical-responsibility framing toward proactive domestic decarbonisation, even as it continues to press developed countries on climate finance obligations
The 1.5°C Threshold and the Paris Agreement Temperature Goal
The Paris Agreement (adopted at COP21, 2015; entered into force 2016) commits parties to hold the increase in global average temperature to "well below 2°C above pre-industrial levels" while "pursuing efforts" to limit the increase to 1.5°C. The 1.5°C figure comes from the IPCC's periodic assessments, most notably the 2018 Special Report on Global Warming of 1.5°C (SR15), which found that impacts (coral reef loss, sea-level rise, extreme heat) escalate sharply between 1.5°C and 2°C.
Key Details
- Paris Agreement: 196 parties; India ratified on 2 October 2016
- Pre-industrial baseline used for the 1.5°C/2°C targets: average temperatures of 1850–1900
- UNEP's "Limiting Overshoot" report (2026) states only about 130 gigatonnes of additional CO2 can be emitted globally from 2026 onward for a 50% chance of holding warming to 1.5°C — a remaining "carbon budget" that would be exhausted in roughly six years at current emission rates
- "Overshoot" refers to temporarily exceeding a temperature target before deploying large-scale mitigation and carbon removal to bring temperatures back down later in the century
The report formalises what climate scientists have signalled for years — that the 1.5°C guardrail will likely be breached this decade — and reframes the policy question from "how do we avoid overshoot" to "how do we limit its depth and duration."
UNFCCC's CBDR-RC Principle and India's NDC
The UN Framework Convention on Climate Change (UNFCCC, adopted at the 1992 Rio Earth Summit) enshrines the principle of Common but Differentiated Responsibilities and Respective Capabilities (CBDR-RC) under Article 3, recognising that developed countries bear greater historical responsibility for emissions and should lead on mitigation and finance. India has consistently invoked this principle while also submitting increasingly ambitious domestic targets.
Key Details
- India's updated NDC (submitted August 2022) commits to a 45% reduction in emissions intensity of GDP by 2030 (from a 2005 baseline) and 50% cumulative installed electric power capacity from non-fossil sources by 2030
- India's long-term goal, announced at COP26 (Glasgow, 2021), is net-zero emissions by 2070
- Per the India State of Forest Report 2023, India has created an additional carbon sink of 2.29 billion tonnes of CO2 equivalent since 2005, against its NDC forest-and-tree-cover sink target of 2.5–3 billion tonnes by 2030
- Independent trackers such as Climate Action Tracker classify India's current targets and policies as falling short of full Paris-alignment, underscoring the gap the UNEP report highlights between pledges and required action
The report's finding that current NDCs collectively cap warming near 1.8°C (not 1.5°C) puts direct pressure on large emerging emitters, including India, to strengthen the next round of NDCs due before COP31, while developed countries face parallel pressure to scale up climate finance under CBDR-RC.
Climate Finance and the Loss and Damage Fund
Climate finance is the transfer of funds from developed to developing countries to support mitigation and adaptation, a commitment formalised under UNFCCC Article 4.3 and reaffirmed in the Paris Agreement's Article 9. A separate Loss and Damage Fund was operationalised following COP27 (2022) and formally launched at COP28 (2023) to compensate vulnerable nations for climate impacts already occurring.
Key Details
- Developed countries' earlier pledge (Copenhagen, 2009) was USD 100 billion/year in climate finance by 2020; the New Collective Quantified Goal (NCQG) adopted at COP29 (2024) set a floor of USD 300 billion/year by 2035, with a broader call to mobilise USD 1.3 trillion/year from all sources
- The Loss and Damage Fund is currently housed at the World Bank on an interim basis
- India has argued for finance to be counted only if it is grant-based or concessional, not loans, since debt-financed "climate finance" adds to developing-country debt burdens
UNEP's overshoot scenario increases the urgency and scale of adaptation and loss-and-damage needs, since a higher and longer overshoot means more irreversible impacts (heatwaves, glacial melt, sea-level rise) for climate-vulnerable countries such as India before any peak-and-decline reversal takes effect.
- UNEP "Limiting Overshoot" report released: September 2026
- Remaining global carbon budget (50% chance of 1.5°C) from 2026: ~130 Gt CO2
- Projected warming even with full NDC/net-zero implementation: ~1.8°C
- India's NDC targets: 45% emissions-intensity cut by 2030 (vs. 2005), 50% non-fossil power capacity by 2030, net zero by 2070
- India's additional carbon sink achieved (ISFR 2023): 2.29 billion tonnes CO2 equivalent (against a 2.5–3 billion tonne 2030 target)
- COP29 (2024) climate finance goal (NCQG): USD 300 billion/year by 2035