What could the UK government do to prepare for hotter temperatures? | BBC Newscast

Key Concepts

• Climate Change Adaptation: The process of adjusting to current or expected future climate and its effects. This involves managing ecological, social, or economic systems in response to actual or expected climatic stimuli and their effects or impacts.
• Climate Change Mitigation: Efforts to reduce or prevent the emission of greenhouse gases. This is distinct from adaptation.
• Paris Agreement: An international treaty adopted in 2015, aiming to limit global warming to well below 2, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.
• Climate Change Committee (CCC): An independent statutory body established under the Climate Change Act 2008 to advise the UK government on emissions reduction targets and to report on the UK's progress in adapting to climate change.
• Temperature Scenarios: Projections of future global average temperature increases, used for planning and risk assessment.
• Tipping Points: Critical thresholds in the Earth's system that, if crossed, can lead to large, irreversible changes.
• National Adaptation Plan (NAP): A government strategy outlining how a country will adapt to the impacts of climate change.
• Well Adapted UK: A forthcoming report by the Climate Change Committee providing detailed advice on adaptation across various sectors.

Government Warning on Climate Change Adaptation

The British government has been warned that it needs to significantly increase its efforts to prepare the country for the impacts of climate change. This warning comes from the independent Climate Change Committee (CCC) in a letter addressed to ministers. The focus of this warning is on adaptation – making changes to infrastructure and buildings to cope with unavoidable climate changes – rather than mitigation, which concerns reducing carbon emissions.

Temperature Scenarios for Adaptation Planning

A key and alarming aspect of the CCC's warning concerns the temperature scenarios the UK must prepare for. While the Paris Agreement's most ambitious target is to limit global warming to 1.5 degrees Celsius, the CCC advises the government to plan for a range of possibilities:

• Current Global Temperature: Approximately 1.4 degrees Celsius.
• Recommended Minimum Scenario for Adaptation: Planning should begin with the assumption of a 2-degree Celsius global temperature increase by the end of the century.
• Worst-Case Scenario: The government must also consider the possibility of a 4-degree Celsius global temperature increase by the end of the century, as this cannot be ruled out by scientists.

Emma Pinchbach, CEO of the CCC, explained that this approach is based on risk management principles, where one plans for the worst-case scenario. She highlighted that existing infrastructure, like the Thames Barrier, was not built to withstand the impacts of even the current 1.5-degree warming scenario, necessitating costly retrofitting. Planning for higher temperature increases ensures that initial investments are resilient enough for future conditions, avoiding the need for repeated upgrades.

Rationale for the Temperature Scenarios

The CCC's recommendation to plan for 2 to 4 degrees Celsius is not a prediction of where the world is headed, but a pragmatic approach to risk management.

• Current Trajectory: The world is currently not on track to meet the 1.5-degree target, and significant impacts are already being felt at 1.4 degrees.
• Energy Transition: While trends in clean energy generation, batteries, and electric vehicles offer positive signs that high temperature outcomes might be avoidable, these trends are not yet robust enough for scientists to definitively rule out higher warming levels.
• Non-Linear Impacts and Tipping Points: The impacts of climate change are not linear. Beyond 1.5 degrees, the effects become less predictable, and there is a risk of triggering tipping points that could lead to accelerating warming and more extreme outcomes, potentially reaching 4 degrees.

Stark Risks Identified for the UK

The CCC's earlier report on adaptation, referenced in the discussion, detailed alarming risks facing the UK:

• Flooding:
  • Half of the UK's top-quality agricultural land is at risk of flooding in one scenario.
  • A quarter of all buildings (excluding new constructions) are at risk of flooding by 2050.
• Extreme Heat:
  • 90% of NHS buildings are at risk from extreme heat and are not adapted.
  • Up to 10,000 excess deaths from heat are projected by 2050.
  • Children are already missing an average of 1.7 school days per year due to heat, a figure expected to worsen.
  • 2,500 people died in the 2022 heatwave, with similar figures expected for subsequent heatwaves due to vulnerable populations, particularly the elderly in care homes.
• Infrastructure Disruption:
  • A third of all rail and road kilometers could be affected by extreme weather by 2050.

Government's Inadequate Adaptation Progress

Despite the known risks, the CCC has repeatedly stated that the government's adaptation program is not working effectively. The upcoming fourth National Adaptation Plan (NAP) has yet to show concrete outcomes in tackling these risks.

• Monitoring Framework: The CCC uses a red, amber, green (RAG) status to monitor government progress. The adaptation process is predominantly marked by "red" and "amber" statuses, with very little "green," indicating poor performance.
• Lack of Clear Framework: Unlike emissions reduction, which has a clear target and a structured five-yearly advice and review process under the Climate Change Act, adaptation lacks a defined outcome or a clear sense of what "good" looks like across government departments.
• Absence of Cross-Government Working: There is a lack of coordinated effort across different government departments to address adaptation challenges.
• Missing Detail: The government has not yet defined specific objectives for adaptation, such as focusing on protecting vulnerable populations during heatwaves or ensuring critical services remain operational. This detail is crucial for parliamentary oversight and buy-in across Whitehall.

Explanations and Defenses from the Government

The government's response to previous advice has often involved commitments to action within the NAP. However, the CCC points to a persistent lack of clarity on objectives, cross-departmental agreements, dedicated funding for measures, and robust delivery mechanisms as key reasons for the slow progress. This contrasts with the more structured approach to emissions reduction.

The Role of the Climate Change Act

The Climate Change Act 2008 is fundamental to the CCC's ability to provide independent adaptation advice and establishes the framework for adaptation in the UK. The CCC hopes that the current government's request for advice will lead to a more thorough approach to adaptation planning.

Trade-offs and Long-Term Savings

The discussion touches upon the trade-offs faced by ministers, such as allocating funds between rebuilding hospitals and investing in climate adaptation measures like air conditioning. However, the CCC argues that effective adaptation planning, as detailed in their upcoming "Well Adapted UK" report, can lead to long-term savings by avoiding costly mistakes like building to the wrong specifications or failing to incorporate climate resilience from the outset. For example, retrofitting a hospital to include cooling measures during a repair is more cost-effective than doing it as a separate, later project.

Political Landscape and Consensus

While the political conversation often focuses on cost of living and economic growth, the CCC emphasizes the economic benefits of climate action, including reduced household bills and increased energy security through reduced reliance on fossil fuels. The CCC believes there is still political consensus on the reality of climate change and the need to plan for its impacts. However, they stress that the severity of these impacts is directly linked to global emissions reduction efforts, making adaptation crucial but not a substitute for mitigation. The CCC notes that the impacts of climate change, such as flooding and extreme heat, are significantly more likely and severe at 2 degrees Celsius of warming compared to 1.5 degrees.

Conclusion

The CCC's warning underscores the urgent need for the UK government to prioritize and strengthen its climate change adaptation strategy. This requires a clear framework with defined objectives, cross-government collaboration, dedicated funding, and robust delivery mechanisms. Planning for a range of temperature scenarios, including worst-case possibilities, is essential to ensure the resilience of infrastructure and society against the escalating impacts of a changing climate. While mitigation remains critical to limiting future warming, effective adaptation is a necessary and immediate response to the climate changes already underway.