State of the Climate 2024

  • Post category:Environment

The State of the Climate 2024 reports from Bio Science and the World Meteorological Organization (WMO) provide crucial insights into global climate trends, greenhouse gas (GHG) levels, extreme weather events, and policy responses. The findings underscore that 2024 is likely to be the hottest year on record, accelerating the urgency for climate action.

Climate Trends and Key Indicators

Global Temperature Rise

  • 2024 is projected to surpass 2023 as the hottest year recorded.
  • January–September 2024: 1.54°C ± 0.13°C above pre-industrial average.
  • The decade 2015–2024 is the hottest in human history.
  • Main drivers: El Niño conditions and record-high GHG emissions.
  • Implications: Increased heatwaves, wildfires, glacier melt, biodiversity loss, and higher risk of crossing climate tipping points.

Greenhouse Gas Emissions at Record Levels

  • Carbon dioxide (CO₂): 420 ppm in 2024 (51% above pre-industrial levels of 278 ppm).
  • Decadal growth rate (2014–2023): +2.4 ppm per year.
  • Methane (CH₄): 1934 ppb in 2023, up 165% from pre-industrial times.
  • Nitrous Oxide (N₂O): 336.9 ppb, up 24% since pre-industrial.
  • Sources: Fossil fuels (90%), deforestation/agriculture (10%).
  • Implications: Faster approach to 1.5°C threshold, ocean acidification, coral bleaching, and more extreme events.

Ocean Warming & Sea-Level Rise

  • Ocean Heat Content (OHC): Highest on record in 2023.
  • Heat absorbed = 3.1 million TWh, ~18× global energy consumption.
  • Sea-level rise: 4.77 mm/year (2014–2023), double the 1993–2002 rate.
  • Drivers: Thermal expansion, melting of Greenland/Antarctic ice sheets.
  • Implications: Coastal megacities (Mumbai, Kolkata, New York, Shanghai) face flooding risk; storm surges and hurricanes more destructive.

Cryosphere: Glacial and Sea Ice Decline

  • Glacial ice loss in 2023 = 1.2 m water equivalent (record).
  • Antarctic sea-ice extent in 2024 = 2nd lowest on record.
  • Arctic sea-ice extent = 7th lowest.
  • Greenland and Antarctic ice sheets continue losing mass.
  • Implications: Threat to freshwater supplies, accelerated sea-level rise, disruptions in Atlantic Meridional Overturning Circulation (AMOC).

Climate Feedback Loops and Tipping Points

Five tipping points could trigger irreversible shifts at 1.5°C warming:

  • Greenland Ice Sheet collapse → long-term sea-level rise.
  • West Antarctic Ice Sheet instability → global flooding.
  • Amazon Rainforest dieback → reduced carbon absorption.
  • Boreal permafrost thaw → release of methane.
  • Coral reef destruction → collapse of marine biodiversity.
  • Implications: Feedback cascades could accelerate warming beyond human control.

Extreme Weather Events in 2024

Heatwaves

  • India: 50°C peaks in multiple states.
  • Myanmar: 1,500 heatstroke deaths.
  • Saudi Arabia: 1,170 deaths during Hajj pilgrimage.
  • Europe & Mediterranean: Heatwaves worsened droughts; 23 fatalities.
  • Implications: Health emergencies, water shortages, crop failures.

Floods

  • East Africa: 500,000 displaced in Kenya, Somalia, Tanzania; 3.4 million food-insecure.
  • Brazil (May 2024): 173 deaths, 630,000 displaced, $3.7 billion damages.
  • Afghanistan (May 2024): 474,000 ha farmland flooded.
  • Implications: Agricultural destruction, displacement, water contamination, disease outbreaks.

Wildfires

  • Chile: 14,000 homes destroyed, 130 deaths.
  • Canada & USA: 45,000 displaced (Canada), 240,000 displaced (USA).
  • Implications: Loss of biodiversity and carbon sinks; worsening air pollution (PM2.5).

Cyclones & Hurricanes

  • Hurricane Beryl (July 2024): 64 deaths, $5 billion damage.
  • Typhoon Yagi (Sept 2024): 1.5 million displaced across Vietnam, Myanmar, Thailand.
  • Implications: More intense storms fueled by warmer oceans; damage to infrastructure and livelihoods.

Climate Policy and Actions

Global Climate Mitigation Efforts

  • 108 countries implemented Multi-Hazard Early Warning Systems (MHEWS).
  • Renewable energy grew by 15% in 2023, yet fossil fuels dominate energy mix.
  • IPCC projects 2.7°C warming by 2100 without stronger policies.
  • Challenges: Financing gaps for developing nations; slow transition away from fossil fuels.

India’s Climate Response

  • National Action Plan on Climate Change (NAPCC) with key missions:
    • National Solar Mission
    • National Water Mission
    • National Mission for Sustainable Agriculture
    • Green India Mission
  • Disaster preparedness: Needs faster implementation of adaptation strategies.
  • Climate actions align with India’s Net Zero by 2070 and Paris Agreement commitments.

Conclusion

The State of the Climate 2024 underscores that climate change is not just an environmental issue but a national security, economic, and humanitarian challenge. Rising GHG emissions, warming oceans, melting ice, and extreme weather threaten ecosystems, livelihoods, and global stability. Without urgent global cooperation, the world is on track for irreversible tipping points. For India, strengthening climate resilience, accelerating renewable energy, and scaling adaptation are essential to safeguard both people and ecosystems.