Thin Ice

• Voyage to the Southern Ocean - Part 5 Taking the pulse

  • Posted on 1st Jul
  • Category: Video

  Scott and Craig describe the recovery and redeployment of a mooring left in the ocean to record temperature, salinity and currents at various depths through time. Lionel and Mike reflect on the results.

• Voyage to the Southern Ocean - Part 6 Oceans and CO2

  • Posted on 30th Jun
  • Category: Video

  Lionel and James explain how CO2 is taken up by the oceans. Lisa Northcote filters surface water to measure CO2 uptake by biota. Scott shows a coring operation to measure the rate at which this accumulates on the sea floor.

• Voyage to the Southern Ocean - Part 7 Forests of the ocean

  • Posted on 29th Jun
  • Category: Video

  Ros talks about her UK work showing the importance of abundant microscopic marine plants in the surface waters of the ocean taking up atmospheric CO2 and giving off oxygen like plants on land.

• Voyage to the Southern Ocean - Part 8 Out of our comfort zone

  • Posted on 27th Jun
  • Category: Video

  Lionel talks about the natural climate cycles of the past he's seen in deep ocean cores back to 33 million years. He and James explain their discomfort at CO2 levels rising far above the pre-industrial 280 ppm.

• Ice Age cycles, temperature and CO2

  • Posted on 26th Jun
  • Category: Video

  Deep cores into ice sheets have revealed an amazing record of Earth's glacial cycles every 100,000 years.  Tim explains how the melt is triggered by changes in Earth's orbit but amplified by rising CO₂ levels.

• From beneath the sea floor Part 1 - The ANDRILL operation

  • Posted on 25th Jun
  • Category: Video

  Alex explains how they drilled almost 1000 m through floating ice and ocean and another 1000+ metres into the sea floor to sample its sediments.  Co-chief scientists Tim and David give their reactions to the wealth of new data from the core on Antarctic climate millions of years ago

• From beneath the sea floor Part 2 - Viewing freshly drilled core

  • Posted on 24th Jun
  • Category: Video

  We see the newly drilled core carried into the lab, and analysed for a range of chemical and physical properties. We also share the excitement of the scientists as they view this window into Antarctica's warmer past for the first time.

• From beneath the sea floor Part 3 - A warmer climate in the past

  • Posted on 23rd Jun
  • Category: Video

  Tim explains what they have discovered - periods between 2 and 5 million years ago when Earth's climate was only slightly warmer but the region was ice-free.

• The fossil record of warmer climates in the past - Martin Brasier

  • Posted on 22nd Jun
  • Category: Video

  Martin Brasier shows the types of fossils that characterised Earth in warmer climates of the past

• What past climates say about CO2 and warming - Matt Huber

  • Posted on 21st Jun
  • Category: Video

  Matt Huber explains how the link between CO₂ and past climates is a key factor to assessing future global warming.

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