Logo of Phnom Penh Post newspaper Phnom Penh Post - Expert: Antarctica, ‘heart of the Earth’, needs protection




Expert: Antarctica, ‘heart of the Earth’, needs protection

Content image - Phnom Penh Post
Chilean Antarctic Institute director Marcelo Leppe says Antarctica is suffering from man’s activities. JOHAN ORDONEZ/aFP

Expert: Antarctica, ‘heart of the Earth’, needs protection

It may be remote and uninhabited but Antarctica is suffering from man’s activities, says the director of the Chilean Antarctic Institute, Marcelo Leppe, in an interview.

Why is Antarctica important?

Originally in school we were taught that there were only five continents around the world. Antarctica is the sixth continent, but it’s a continent that you can define as the heart of Earth.

The world’s main marine current is the circumpolar Antarctic current that moves from west to east around Antarctica. It appeared 13 million years ago and it has frozen a continent that was green in the past. This current has connections with the thermohaline (ocean) currents around the world.

It’s like a heart because every year it changes its shape from 14 million square kilometres to more than 20 million. It expands in winter with the sea ice and retreats in summer . . . You can see it beating, really beating.

And the subantarctic current is moving around the world like a circulatory system. It’s probably playing a major role in the control of climate change.

So it (the current) is very important to understand and to predict, but it’s also very important to preserve.

What is the impact of climate change on Antarctica?

The main impact in Antarctica is probably the cryosphere. Every year you can observe and record the melting of glaciers, the disappearance of sea ice . . . and, in areas that are left without ice, the recolonisation of plants and other organisms that were not present in Antarctica before.

We have recorded that in the last 50 years, probably 15 per cent of all the ice has disappeared. And in the coming years this curve will accelerate, more than originally expected in the IPCC (Intergovernmental Panel on Climate Change) predictions.

In 2100, probably an important share, more than 35 per cent of the ice, will have disappeared. The landscape of the Antarctic peninsula will be different and the dynamics of the sea currents will also definitely be different.

Are there any other threats? Why should we be concerned?

Antarctica is not as isolated as we think. Microplastics are starting to be a big, big issue in Antarctica. They are everywhere and . . . we have detected them in all environments. We have detected them in the eggs of penguins, for example.

So what we produce in the rest of the world is reaching Antarctica and this nature that looks very untouched is actually impacted by human beings through microplastics.

When you have a continent that is regulating the weather, the climate around the world, with these teleconnections (related to each other at great distances), of course you have to pay attention.

MOST VIEWED

  • Chikungunya hits 15 provinces, says gov’t

    Ministry of Health spokeswoman Or Vandine said on Thursday that the chikungunya outbreak in the Kingdom has spread to 15 provinces. Some 1,700 people are now suspected to have the disease. Vandine urged people to prevent its further spread by eliminating shelters for the Aedes aegypti mosquitoes

  • Body of woman killed in Bangkok returns

    The Cambodian embassy in Thailand is working to repatriate the body of a casino dealer who was shot dead in Bangkok on Monday night. Ministry of Foreign Affairs and International Cooperation spokesman Kuy Kuong told The Post on Wednesday that officials are preparing paperwork to

  • Gov’t exempts visa A and B holders from Covid fees

    Airline passengers who are diplomats and officials of international organisations holding Type A and B visas for travel to Cambodia are exempted from paying Covid-19 testing fees, said the Ministry of Health in its latest adjustment of rules on Wednesday. Health Minister Mam Bun Heng

  • All inbound flights set to face added scrutiny

    Ministry of Health spokesperson Or Vandine said on Monday that the ministry is monitoring all inbound flights, after it was announced that only those from Malaysia and Indonesia will be temporarily cancelled from August 1. Vandine said on Monday that the two countries were identified as