Why Is the Ice at the Poles Still Melting? Here are 3 Reasons

Illustration of polar ice (Antara)

YOGYAKARTA - Many people consider global warming to be the reason why the ice at the poles continues to melt. But is that the only reason? This article will provide information related to the reason why polar ice continues to decrease due to melting.

Why the ice at the poles keeps melting

It should be understood that the ice at the poles is one of the important components of the earth's climate system. The ice layer serves to maintain global temperature balance, reflects most of the sun's rays, and stores a very large amount of fresh water reserves. Unfortunately, the polar ice is reported to continue to melt. The triggers are many things, some of which are as follows.

Greenhouse Effect

The main cause of melting ice at the poles is the increase in the Earth's average temperature or global warming. Global warming occurs when the concentration of greenhouse gases in the atmosphere, such as carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O), continues to increase. These gases are able to hold heat that should be reflected back into space, so that the surface temperature of the Earth becomes warmer.

Most of the increase in greenhouse gases comes from human activities, such as burning fossil fuels for power plants, motor vehicles, industries, and land clearing through forest burning.

As air and ocean temperatures rise, polar ice sheets begin to melt faster than they form in winter.

Warmer Sea Temperatures

Not only the air that experiences an increase in temperature, the sea water also becomes warmer due to absorbing most of the additional heat trapped in the atmosphere.

Warmer ocean waters can erode the underside of glaciers and the ice sheets that float on the sea. This process is often invisible from the surface, but has a major influence on the acceleration of melting.

When the ice sheet base weakens, ice chunks are more easily cracked, broken, and detached into the sea in the form of icebergs.

Changes in Weather Patterns and Sea Currents

Climate change is not only increasing the Earth's average temperature, but also affecting wind patterns, rainfall, and ocean currents.

In some polar regions, changes in wind direction can bring warmer air. Meanwhile, changes in ocean currents can flow warm water towards areas that were previously colder. These conditions make the melting process take place faster than decades ago.

Those are some of the reasons why the ice at the poles continues to melt. Visit VOI.id for other interesting information.