Surplus heat is new climate challenge, Pg10

Key Highlights:

• The World Meteorological Organisation (WMO) report confirms the last decade was the hottest on record.
• Carbon dioxide levels are 50% higher than pre-industrial levels, with global emissions reaching record levels in 2025.
• The concentration of carbon dioxide is the highest in 2 million years, and methane and nitrous oxide in at least 800,000 years.
• Record levels of Greenhouse Gases (GHG) have upset the Earth’s energy equilibrium, leading to a heat surplus.
• Warmer oceans contribute to stronger tropical storms, and melting ice increases sea levels, further aggravating the energy imbalance.

Detailed Insights:

• The Earth's energy equilibrium is disrupted due to increased GHG concentrations, resulting in a heat surplus, meaning the planet will continue to warm even if emissions stop immediately.
• Oceans absorb a significant amount of extra energy trapped by GHGs, leading to warmer waters and contributing to stronger tropical storms and rising sea levels.
• Melting ice reduces the planet's ability to reflect solar radiation, exacerbating the energy imbalance and further contributing to global warming.
• Planners need to focus on making infrastructure more resilient, investing in early warning systems, and protecting vulnerable populations from extreme weather events.
• Stable climate policies are crucial for guiding long-term investments and research, requiring governments to insulate these policies from short-term political considerations.

Key Concepts Involved:

• Greenhouse Gases (GHG): Gases that trap heat in the atmosphere, contributing to global warming and climate change.
• Energy Equilibrium: The balance between incoming solar radiation and outgoing radiation from the Earth.
• Climate Policy: Government strategies and regulations aimed at reducing greenhouse gas emissions and mitigating climate change.