Learn about Glaciers

One of the most valuable components of nature

Introduction

“When the ice melts, it's not just water that disappears—it's memory, balance, and the future.”

The cryosphere includes all components of the Earth System that are frozen—such as snow cover, glaciers, ice sheets, ice shelves, icebergs, sea ice, lake ice, river ice, permafrost, and seasonally frozen ground.

It plays a critical role in regulating Earth's climate, supporting ecosystems, and providing water to billions of people.

Alarming Changes

According to the IPCC Special Report, the cryosphere is undergoing rapid shifts:

  • 70% of Earth's freshwater is locked in snow and ice
  • 10% of Earth's land area is covered by glaciers or ice sheets
  • Sea level rise (2006-2015) was 2.5x faster than 1901-1990
  • Arctic snow cover in June dropped 13.4% per decade since 1967
  • Ice sheets are up to 4 km thick in East Antarctica
  • Antarctica holds ice that could raise sea levels by 58 meters

Glacier Changes Over Time

Visual evidence of glacial retreat across significant Himalayan and Karakoram ranges.

🧊 Gangotri Glacier (Uttarakhand)

Location: Garhwal Himalayas, source of the Ganga River

Retreat: ~1 km in the last 70 years (~15-20 meters/year)

Concern: Significant mass & length loss; freshwater source for millions.

After
Before
1984
2023

🧊 Siachen Glacier (Ladakh)

Location: Eastern Karakoram Range

Retreat: ~1,000 meters over 30 years

Concern: Military activity accelerates melt; climate sensitive.

After
Before
1984
2020

🧊 Pindari Glacier (Uttarakhand)

Location: Kumaon region

Retreat: ~135 meters from 1958 to 2020 (~2 meters/year recently)

Concern: Moraine shift observed; high scientific attention.

After
Before
1984
2020

🧊 Zemu Glacier (Sikkim)

Location: Near Kanchenjunga, Eastern Himalayas

Retreat: ~27% area loss in recent decades

Concern: Vital for Teesta River; rapid satellite-observed retreat.

After
Before
1984
2020

🧊 Dokriani Glacier (Uttarakhand)

Location: Bhagirathi Valley

Retreat: ~20 meters/year

Concern: Volume loss confirmed by Wadia Institute studies.

After
Before
1984
2020

🧊 Chhota Shigri Glacier (Himachal Pradesh)

Location: Lahaul-Spiti region

Retreat: ~15-20 meters/year

Concern: One of India's benchmark glaciers with detailed data.

After
Before
1984
2020

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