Guest post: How declining cloudiness is accelerating global warming

Summary of the Article

Title: Guest post: How declining cloudiness is accelerating global warming

Key Points:

1. Decline in Low-Level Clouds:

   • Recent observations show a decrease in low-level clouds, which contribute to half of the increase in Earth's energy imbalance over the period from 2003 to 2024.

2. Human Influence on Cloud Decline:

   • The decline in low-level cloudiness is primarily driven by human activities rather than natural climate variations.
   • Factors contributing to this include:
     • Aerosols (14%)
     • Greenhouse gases (20%)
     • Cloud feedback mechanisms (40%)

3. Impact on Energy Imbalance:

   • The decrease in low-level clouds amplifies the Earth's energy imbalance, leading to more warming.

4. Climate Models and Projections:

   • Climate models used for future projections accurately simulate recent declines in low-cloud cover.
   • This suggests that current climate model projections already account for the effects of declining cloudiness.

5. Future Research Directions:

   • Future research should focus on other drivers of energy imbalance changes, such as upper

Read the full article at Carbon Brief

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