Sea-level rise

Although it may not be immediately obvious when we visit the beach, sea-level rise is affecting coastlines all over the world. For low-lying countries such as the Netherlands, sea-level rise and tidal surges are a constant threat. Our oceans are rising as a consequence of climate change. As the temperature of seawater increases it expands and the ice melting from ice sheets and glaciers adds more water to the global ocean. We know this because satellites high above our heads measure the temperature of the sea surface and of our changing ice.

While the global averaged trend is towards rising levels, there are many regional differences so that in some places it is rising and in other places it is falling. Satellites carrying altimeter instruments systematically measure the height of the sea surface so that sea-level rise can be closely monitored. Altimetry measurements over the last 25 years show that on average sea-level is rising about 3 mm a year and this rise is accelerating.

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Ocean colour and climate

This presentation was given by Bob Brewin, during the session titled ‘Ocean colour and climate ‘.

Every two years, ESA’s Earth observation summer schools draws young scientists from all over the world to learn more about remote sensing, Earth system science, modelling and monitoring, and how data can be used to better understand the world we live in. In 2018, the two-week summer school is held on 30 July to 10 August. While the students engage in practical sessions in the afternoons, the morning lectures were streamed live.

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Horizons mission – First call from space

ESA astronaut Alexander Gerst spoke to European media from the International Space Station on 12 June 2018, just three days after docking with the orbiting outpost.

The press conference was held at the European Astronaut Centre in Cologne, Germany, and was mainly in German.

Alexander answered questions on climate, how it feel to be in space a second time, and the football World Cup.

This is Alexander’s second six-month stay on the International Space Station. The mission is called Horizons as a symbol for the unknown and what lies beyond. The mission further cements ESA’s know-how for living and working off-planet. Alexander will be testing ways of operating and working with robots to develop techniques required for further human and robotic exploration of our Solar System such as commanding rovers while orbiting another planet.

The Horizons science programme is packed with European research: Alexander will take part in over 50 experiments to deliver benefits to people on Earth as well as prepare for future space exploration. Many of these experiments will take place in Europe’s Columbus laboratory that is celebrating its 10th anniversary in space this year.

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Follow Alexander and the Horizons mission on social media via http://bit.ly/AlexanderGerstESA and on http://bit.ly/HorizonsBlogESA.

Earth from Space: Atlantic ship tracks

Earth from Space is presented by Kelsea Brennan-Wessels from the ESA Web TV virtual studios. In this edition, Sentinel-3 takes us over the Atlantic Ocean close to Spain and Portugal where the sky features criss-cross tracks from ships.

See also http://www.esa.int/spaceinimages/Images/2018/02/Atlantic_ship_tracks to download the image.