Artificial Glaciers: Solving Climate Change in Ladakh | Sonam Wangchuk

The presenter explains the complete water cycle from glaciers to oceans. Glacier meltwater flows downward through the terrain, eventually reaching rivers like the Indus River and continuing to the Arabian Sea. The presenter describes how glaciers function as natural dams, storing water and releasing it through natural water gates. This segment demonstrates the hydrological connection between glaciers and major river systems, showing how glacial water contributes to global water circulation and ecosystem sustainability.

Glacial melt water serves as evidence for understanding internal glacier processes. It has two key characteristics: (1) It is associated with plentiful debris supply, making it sediment-rich; (2) It is extremely variable in discharge, both seasonally (more in summer, less in winter) and daily (diurnal variability with higher daytime peaks). Early in the season, discharge is low with minimal daily variability. As the season progresses, total water production increases and diurnal variability intensifies. Sediment discharge varies independently from water discharge, with early-season floods carrying abundant debris while late-season floods may carry less. Glacial melt waters are often rich in dissolved impurities and solutes, with chemical composition reflecting the pathway water has taken through the glacier and how long it has been in contact with the bed or debris. Winter and summer outflows show different chemistry, as do waters that travel quickly versus those stored with longer contact times.

The video presenter explains that the well-developed irrigation channels (suro) in this village are maintained because of glacial meltwater. The presenter states that glaciers in the region melt during warmer periods, producing water that is then channeled through these irrigation systems to support agriculture. This demonstrates how mountainous regions with glaciers utilize natural water sources for agricultural purposes, creating sustainable irrigation infrastructure that takes advantage of seasonal glacial melt patterns.

Ice worms are black thread-like organisms half to one inch long that live exclusively on glaciers, avoiding sunlight by hiding in snow during the day. They can survive in freezing melt pools. Researchers have measured stream flow from glaciers for 40 years, finding that current August flow is less than 30% of historical averages. This reduced meltwater affects all aquatic organisms downstream, flowing into rivers like the Cle Elum River and ultimately affecting reservoir levels. The cumulative effect of multiple glaciers retreating reduces overall river flow throughout entire watersheds.

Greenland outlet glaciers exhibit three distinct categories of response to seasonal meltwater forcing based on their subglacial drainage system dynamics: Category 1 glaciers show symmetric acceleration-deceleration patterns where velocity peaks coincide with meltwater runoff peaks; Category 2 glaciers accelerate at melt onset but maintain elevated velocities into autumn and winter due to inefficient drainage systems; and Category 3 glaciers decelerate rapidly at the very onset of the melt season because they quickly form efficient drainage systems. These categorical differences are influenced by geometric conditions such as cross-sectional area ratios and environmental factors like runoff volume, with Category 3 glaciers having over double the runoff per unit outlet area compared to other categories, making them more susceptible to rapid drainage system formation.

The IPCC has three working groups: the first on climate change reality, the second on impacts and adaptation, and the third on mitigation solutions. The Second Working Group report revealed that beyond 2 degrees of warming, adaptation becomes impossible—a significant shift from previous reports. Current warming is around 1.2-1.3 degrees, and even at this level, extreme events like storms, droughts, and famines are already occurring. The measures of precaution are widely inadequate, and technological solutions for adaptation will not provide sufficient protection. This report was completely overlooked by media coverage when released during the Ukraine war.

According to the Intergovernmental Panel on Climate Change (IPCC), adaptation is defined as 'the process of adjustment to actual or expected climate and its effects, in order to reduce harm or exploit beneficial opportunities.' The emphasis on both 'actual' and 'expected' climate changes provides motivation for combining mitigation and adaptation perspectives. This definition reflects that many cities are not even well-adapted to current climate conditions, let alone future changes, making proactive adaptation essential.

The IPCC (Intergovernmental Panel on Climate Change) synthesizes climate science through three working groups: Group 1 on physical science, Group 2 on impacts and adaptation, and Group 3 on mitigation options. Climate adaptation requires understanding regional vulnerabilities and building resilience. Strategies include nature-based solutions (restoring wetlands for flood buffering), infrastructure upgrades, and accepting managed retreat in some cases. The video emphasizes that adaptation must be proactive rather than reactive, as climate impacts are already affecting all regions, not just distant or vulnerable areas.

In a climate context, mitigation is defined by the IPCC as human intervention to reduce the source or enhance the sinks of greenhouse gases. Both adaptation and mitigation paths protect people from changing climate, but they have very different outcomes. Understanding this distinction is essential for developing effective climate strategies.

The IPCC (Intergovernmental Panel on Climate Change) has warned that if no action is taken, the Iberian Peninsula will be the most affected region in Europe, with the southern and eastern parts experiencing Mediterraneanization. This means increased heat waves, cold waves, and extreme weather events. While some climate change can be mitigated (frenando las causas), a significant portion has already occurred and must be adapted to. The window for preventing the worst outcomes has closed—now the focus must shift to adaptation and protection of vulnerable populations.

This segment explores the physics of ice melting in water: (1) Ice absorbs heat from surrounding water as it melts, causing overall temperature to drop; (2) Larger ice cubes melt more slowly than smaller ones due to lower surface-area-to-volume ratios; (3) Ice distribution affects cooling uniformity - placing ice in the center creates more uniform cooling than edges; (4) The narrator demonstrates adding multiple ice cubes to progressively cool the water, showing how cumulative ice addition increases cooling effect. This illustrates fundamental thermodynamic principles about heat transfer and phase change.

The ger represents centuries of engineering wisdom designed to solve a specific survival problem: maintaining human life in an environment where heat disappears rapidly. The circular shape is not aesthetic but physical—among all geometric forms, the circle has the smallest surface-area-to-volume ratio, minimizing heat escape. The rounded structure prevents wind from finding corners to push against, causing air to flow around it. The walls use sheep's wool felt, created by pressing fibers with heat and moisture until they interlock, creating millions of air pockets that trap heat. The felt also contains lanolin, making it water-resistant. In winter, families add layers until walls reach 10-15 cm thickness, creating an efficient thermal barrier that traps interior heat while blocking cold air.

The size of ice cubes affects their melting rate. Smaller ice cubes have a higher surface-area-to-volume ratio, which means they melt faster because more of their surface is exposed to heat. Larger ice cubes melt more slowly because they have less surface area relative to their volume. This is why larger ice cubes are often used in drinks - they last longer.

Larger ice spheres melt more slowly than smaller cubes, reducing beverage dilution. The 2.4-inch ice spheres from the Ecozy machine last significantly longer than standard 2-inch cubes, maintaining drink temperature and flavor for extended periods. This principle applies broadly: ice volume and surface area ratio determines melting rate, with larger spheres having a lower surface-area-to-volume ratio that slows heat transfer and melting.

Small creatures lose their vital heat much faster than larger beings. This is a fundamental principle of thermodynamics: smaller bodies have a higher surface-area-to-volume ratio, which causes them to dissipate heat more rapidly into their environment.