What is the International Polar Year?

1. It lasts for about a year.
2. It is a programme of scientific research.
3. It happens every 50 years.

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Why do scientists study the Arctic?

1. It is a very clean region.
2. It is a rather polluted region.
3. This region is getting polluted nowadays.

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Why do scientists not use satellites to get necessary data?

1. The satellites can’t carry out detailed observations.
2. They only provide a long-term view of things.
3. They don’t measure things.

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Why are scientists going to look at the Arctic haze?

1. They are worried about an unprecedented loss of Arctic ice.
2. They want to study components that come from pollution.
3. They are interested in atmospheric contribution to climate change.

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Why is ozone so important for studying climate change?

1. It is emitted by pollution.
2. It is created by the chemistry of pollutants.
3. It is the most recognizable greenhouse gas.

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What makes the ARCTAS mission really important?

1. The interest why the snow and ice are melting.
2. The fact that the black carbon hastens the melt season.
3. The necessity to study the black carbon.

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What is Doctor Dibb’s field of study?

1. He studies how the air comes to Greenland.
2. He carries out ice core analyses.
3. He examines snow and air samples

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