Forest Mist

Sea ice decline is an issue of critical importance for the Arctic and global climate. The Arctic Ocean is warming twice as fast as the rest of our planet, which has led to rapid sea ice loss over the past few decades. Since 1979, we’ve lost about half of our summer sea ice cover–and with how much more melting we can expect over the next century or two, it looks like there will be very little left by 2100 (or possibly even sooner).

The Rapid Decline of Sea Ice Is a Global Emergency

Sea Ice

What Is Sea Ice?

Sea ice is a type of frozen seawater that forms when the temperature of the ocean drops below its freezing point.

It can be found in both the Arctic and Antarctic regions, and plays an important role in regulating ocean and air temperatures.

It does this by reflecting sunlight back into space, circulating ocean water, and maintaining animal habitats.[1]

Sea ice extent is the area of ice that covers the Arctic Ocean at a given time, and is measured by the National Snow and Ice Data Centre (NSIDC) from 1979–2023 for the Globe, Northern Hemisphere, and Southern Hemisphere.[2]

In February 2023, the area of sea ice around Antarctica hit a record low, with scientists reporting “never having seen such an extreme situation before”.[3]

The reduction of sea ice is due to climate change, with Earth warming on average by 0.85°C over the past century.

This warming has caused ice sheets to melt and glaciers to recede. It also accelerates the formation of open water in areas where saltwater and freshwater meet.

The NSIDC reports that Arctic Sea ice extent has decreased by 13.2% per decade since 1979. And Antarctic Sea ice extent has increased by 1.6% per decade during the same period.

Why Is Sea Ice So Important?

Sea ice is an important component of the Earth’s climate system, as it plays a critical role in regulating global climate and supporting marine ecosystems.

One of the primary functions of sea ice is to reflect sunlight back into space, which helps regulate the Earth’s temperature.

When sunlight hits sea ice, most of it is reflected into space, which helps cool the planet.

However, when sea ice melts, the darker ocean waters are exposed, which absorb more sunlight and heat up the planet. This can contribute to global warming and climate change.

Sea ice also plays a key role in supporting marine ecosystems. Many species, such as polar bears, walruses, and seals, rely on sea ice for their survival.

For example, polar bears use sea ice as a platform for hunting seals, and walruses use it as a resting place between foraging trips.

In addition, sea ice helps regulate ocean circulation and salinity. As sea ice forms, it releases salt back into the ocean, which helps maintain the ocean’s salinity levels.

This, in turn, helps regulate ocean currents and the distribution of nutrients and heat around the planet.

Overall, sea ice is an important component of the Earth’s climate system and supports a wide range of marine ecosystems.

As such, it is important to monitor and conserve sea ice to maintain the health of the planet and its inhabitants.

Sea Ice and Glaciers Are Seriously Melting

The rapid melting of sea ice and glaciers is becoming an increasingly pressing issue that demands our attention.

As global temperatures continue to rise, the rate of melting is accelerating, causing sea levels to rise the balance of our planet’s delicate ecosystem.

The melting of sea ice in the Arctic is particularly concerning, as it contributes not only to rising sea levels, but also to a feedback loop of warming.

As the ice melts, the darker ocean water absorbs more heat from the sun, further accelerating the melting process.

Similarly, the melting of glaciers is causing freshwater sources to become increasingly scarce.

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That could have potentially devastating consequences for agriculture, industry, and human populations that rely on them.

The loss of glaciers also threatens the survival of many species that depend on them for their habitats and food sources.

To address this issue, we must take immediate action to reduce our carbon emissions and slow global warming.

We must also work to protect and preserve our remaining sea ice and glaciers. Perhaps through measures such as reforestation, carbon capture, and the creation of protected areas.

Ultimately, the melting of sea ice and glaciers is not just an environmental issue, but a humanitarian one.

It is up to us to act now to ensure a sustainable future for ourselves and future generations.

Arctic Sea Ice Is Showing Up Late

Arctic sea ice is an important indicator of the health of the planet’s climate system.

It is a crucial component of the Arctic ecosystem, helping regulate the planet’s temperature and climate patterns.

However, recent observations show Arctic Sea ice is showing up late, which is a concerning trend.

According to data from the National Snow and Ice Data Centre, the Arctic Sea ice extent for February 2021 was the lowest on record for that month.

The extent of sea ice was almost 7% below the average for 1981-2010.

Scientists believe this delay in Arctic Sea ice formation is due to rising global temperatures caused by human activities, such as burning fossil fuels and deforestation.

These activities cause an increase in greenhouse gases, which trap heat in the atmosphere and lead to a warming planet.

As the planet warms, the melting of Arctic Sea ice becomes more likely, which can have devastating effects on the Arctic ecosystem and global climate.

The loss of sea ice can cause sea levels to rise, disrupt ocean currents, and alter weather patterns around the world.

In addition to the environmental consequences, there are also economic and social consequences of delayed Arctic Sea ice formation.

Delayed ice formation can lead to shipping disruptions, affecting the livelihoods of people who rely on shipping lanes for trade and travel.

Overall, the delayed Arctic Sea ice formation is a worrying trend that highlights the urgent need for action to reduce greenhouse gas emissions and address the root causes of climate change.

It’s Getting Thinner as Well as Less Extensive

Sea ice is an important component of the Earth’s climate system, and its thickness and extent are closely monitored by scientists.

Recent studies have shown that sea ice is indeed getting thinner and less extensive, which has significant implications for the planet.

The thickness and extent of sea ice are important indicators of the health of the Arctic and Antarctic regions.

In addition to the decline in extent, sea ice is also getting thinner. A study published in the journal Environmental Research Letters found that the average thickness of Arctic Sea ice decreased by 65% between 1975 and 2012.

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This thinning of the ice has been attributed to a combination of factors, including increased ocean heat content and changes in ocean and atmospheric circulation patterns.

The loss of sea ice has significant implications for the planet, including rising sea levels and changes in global climate patterns.

As sea ice melts, it exposes more of the dark ocean surface, which absorbs more sunlight and causes the water to warm up.

This warming can lead to the melting of even more sea ice and the release of more greenhouse gases, which can further accelerate global warming.

We must continue to monitor sea ice levels and take steps to mitigate the effects of global warming on our planet’s climate system.

Climate Change Solutions for Everybody

Climate change is a global issue that requires immediate action to reduce greenhouse gas emissions. Several possible solutions can help address climate change, including:

Transitioning to renewable energy sources. One of the most effective ways to reduce greenhouse gas emissions is to transition to renewable energy sources, such as solar, wind, and hydropower. This will reduce our dependence on fossil fuels and help curb emissions from the energy sector.

Promoting energy efficiency. Another solution to reduce greenhouse gas emissions is to promote energy efficiency in buildings, transportation, and industry. This can be achieved using energy-efficient appliances, LED lighting, and better insulation in buildings.

Improving public transportation. Encouraging public transportation, such as buses and trains, can reduce emissions from the transportation sector. Governments can invest in public transportation infrastructure and provide incentives for people to use it.

Carbon pricing. Carbon pricing is a policy approach that puts a price on carbon emissions to encourage companies to reduce their emissions. This can be done through a carbon tax or a cap-and-trade system.

Afforestation and reforestation. Planting new trees and restoring forests can help remove carbon dioxide from the atmosphere and store it in biomass. This can be done through afforestation and reforestation programs.

Carbon capture and storage. Carbon capture and storage technology involves capturing carbon dioxide emissions from power plants and other industrial sources and storing them underground. This technology can help reduce emissions from the industrial sector.

Promoting sustainable agriculture. Sustainable agriculture, such as reducing the use of pesticides, can help reduce emissions from the agriculture sector.

The importance of taking action to address sea ice decline and climate change.

Sea ice decline and climate change are not just environmental issues, but also economic, social, and geopolitical concerns.

The melting of sea ice has serious consequences for the world’s ecosystems.

Including the loss of habitat for polar bears and other Arctic wildlife, increased risks of extreme weather events and sea level rise, and disruptions to global food systems.

Furthermore, climate change caused by human activities leads to significant changes in our planet’s natural systems, with potentially catastrophic effects on human societies.

As temperatures continue to rise, we will see more frequent and severe weather events, such as hurricanes, droughts, and wildfires, which will lead to economic and social disruption, and loss of life.

Investing in clean energy technologies and transitioning from fossil fuels will create new jobs and economic opportunities, while reducing greenhouse gas emissions and the risks associated with climate change.

Ultimately, the fight against climate change requires collective efforts from governments, businesses, and individuals around the world. By acting now, we can build a more sustainable and resilient future for ourselves and future generations.


Sea ice naturally cycles annually between a growing and melting phase. But studies show a rapid decline in sea ice and snow cover over the past four decades.

Overall, human activity has serious impacts on the health of our planet, and we must act to combat the many consequences of our actions.

The loss of sea ice and the introduction of contaminants in our water are just two of the many issues we face, which will be difficult to solve.

But if we work together and realise there is only one world, we can change our habits and restore this planet to a healthy state.


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