Cloud Catchers: A Source of Hope for Water Scarcity

Jul 18, 2024

Cloud Catchers: A Source of Hope for Water Scarcity

Introduction

  • Speaker: Sebastian Kisters, reporter for Germany's public broadcaster ARD.
  • Location: Edge of the Sahara, northwest Africa, and Spain.
  • Topic: Water scarcity solutions using cloud catchers invented by Peter Trautwein.

Background

  • Peter Trautwein's Invention: Created nets called 'cloud catchers' to capture water from clouds without rain.
  • Motivation: Trautwein wanted to give back using his expertise after a successful career designing consumer products.
  • Origin of Story: Kisters discovered the project through beer brewed with cloud-captured water in Gran Canaria.
  • Objective: Trautwein aims to supply 16 villages with drinking water.

Observations in Morocco

Drought and the Impact of Cloud Catchers

  • Severe Drought: Extreme drought in northwest Africa and cities like Barcelona reliant on desalination.
  • Location: Village in southern Morocco.
  • Nets: Installed atop mountains to capture cloud water.
  • Cisterns: Collect and filter water, which is then distributed to villages.
  • Water Reach: Approximately 200 cubic meters of water can be held in cisterns.
  • Journeys to Villages: Trautwein regularly inspects the functionality and impact of the nets.

Local Management

  • Local Oversight: Local leaders like Mounir involved in managing the project.
  • Financing: Supported by various grants and foundations.
  • Technical Evaluation: Tested different meshes with the Technical University of Munich; chosen spacer fabric.
  • Requirements: Needs air currents (5-10m/s) and fog droplets (20-40 micrometers).

Canary Islands and Tenerife

Research and Efficacy

  • Climatologist Involvement: Victoria Marzol conducts research on where and how to extract water from clouds.
  • Indications in Nature: Using mosses and lichens to identify potential areas.
  • Altitudes: Effective cloud water collection occurs above 600 meters.
  • Historical Nets: Started with simple nets, now using more robust ones with extra layers for better efficiency.

Significance for Reforestation

  • Tenerife Fires: Extensive reforestation efforts using cloud water; significant recent fire damage.
  • Signs for Hikers: Educate about the importance and function of cloud water.
  • Future Potential: Idea for utilizing cloud catchers for rapid reforestation and forest management.

Water Scarcity and Desertification in Spain

Toledo Protests

  • Concerns: Over pumping water from the Tagus River to the south for agriculture.
  • Impact: Loss of quality of life, potential forest fires, and environmental degradation.
  • Local Stance: Strong opposition to water diversion projects.
  • Challenges: Alternative solutions needed to cope with water shortages in central and northern Spain.

Practical Impacts and Broader Applications

Benefits in Morocco

  • Direct Impact: Easier access to water in villages, significant improvement in quality of life.
  • Time Savings: Reduced time spent fetching water; increased time for education and other activities.
  • Economic System: Prepaid water system to prevent wastage and ensure sustainability.

Worldwide Interest

  • Global Inquiries: Increased requests for cloud catchers from regions like Somalia, Oman, Namibia, Northern Italy, and Portugal.
  • Company Formation: Trautwein's 'Cloud Fisher' now a small enterprise.

Limitations and Challenges

Climatic Variability

  • Reduced Fog: Less fog seen in areas like Valladolid affecting the feasibility of using cloud catchers.
  • Adaptations: Exploring other sustainable agricultural practices; not always viable for all regions.

Comparison with Conventional Methods

  • Desalination Plants: Common in Spain due to rain scarcity; energy-intensive and expensive.
  • Agricultural Shift: Push towards more sustainable farming practices, reducing reliance on large-scale irrigation.

Case Studies

  • Gran Canaria: Successful use of cloud water for reforestation; recent efforts showing promising results.
  • Germany: Cloud-captured water sold as a luxury item in Europe and Middle East.

Conclusion

  • Innovative Solution: Cloud catchers are an inventive measure to address water scarcity, though not a universal solution.
  • Life Change: Significant positive impact on communities where implemented.
  • Future Prospects: Increasing need for new water sources in light of climate change and growing interest globally.
  • Research Ongoing: Continuous improvement and adaptation necessary for maximizing benefits.

Key Takeaways

  • Cloud Water: Can be a viable source of drinking water and aid in reforestation efforts.
  • Sustainable Impact: Improves quality of life significantly in water-scarce regions.
  • Collaborative Efforts: Success relies on community involvement and interdisciplinary research.