Relevance: GS Paper III – Environment & Climate Change; Source: The Hindu Analysis, International Climate Observatories

A massive brown ribbon-like plume has been spotted by satellites stretching across the Atlantic Ocean from the Western Sahara to the Caribbean. 

Made of Saharan dust, Amazon wildfire smoke, and carbon-rich fine particles carried by strong trade winds.

Why It Matters

• Warming effect: Black carbon increases radiative forcing.
  
• Rainfall disruption: Saharan dust can influence Atlantic hurricanes and monsoon systems.
  
• Marine impacts: Dust deposition affects the Sargasso Sea, a biologically rich zone in the Atlantic.
  
• The Sargaso Sea: Similar large-scale transport mechanisms explain phenomena like the Great Pacific Garbage Patch formed in the North Pacific Gyre.

The plume is an indicator of worsening land degradation, prolonged droughts, and stronger trans-Atlantic wind systems, all linked to global climate change. 

It underscores how interconnected atmospheric and oceanic systems move pollutants across continents.

One-line Wrap: The Atlantic “brown ribbon” highlights a climate-stressed planet where dust, heat, and aerosols now travel on a scale visible from space.

UPSC Prelims Practice Question

With reference to large aerosol plumes over oceans, consider the following:

1. Saharan dust can reach the Caribbean through Atlantic trade winds.
   
2. The Sargasso Sea lies in the Atlantic Ocean.
   
3. The Great Pacific Garbage Patch is formed by atmospheric dust deposition.
   

Which of the above statements are correct?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

Answer: (a)