How does the Siachen Glacier remain frozen despite receiving sunlight?
The Siachen Glacier remains frozen despite receiving sunlight mainly because of its extremely high altitude, very low temperatures, and the large amount of snow and ice covering the region. Located in the eastern Karakoram Himalayas, the glacier extends to elevations of more than 5,000 metres in many areas. At such heights, air temperatures remain very low, particularly during winter, allowing snow and ice to persist for long periods.
Sunlight does reach the glacier, especially during the summer months, but sunlight does not automatically mean that all the ice will melt. Some solar energy is reflected by the glacier’s bright snow and ice surface, while the remaining energy is partly used to warm the surface and melt limited amounts of ice. The cold surrounding air and continuous accumulation of snow help maintain the glacier’s overall ice mass.
The glacier also receives substantial snowfall, which adds new layers of snow and ice. At higher elevations, temperatures can remain below freezing even during periods of strong sunshine.
Therefore, high altitude, low temperatures, reflective snow and ice, and continued snowfall work together to keep Siachen a largely frozen environment despite strong solar radiation.
