Rising fast

As the 25 Years of Progress in Radar Altimetry Symposium in the Azores draws to a close, Anny Cazenave from the Laboratoire d’Etudes en Géophysique et Océanographie Spatiales, France, joins ESA web TV to explain how satellite altimeters have revealed that sea level is rising, on average, by 3 mm a year – but over the last five years this rate has accelerated to almost 5 mm a year.

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ESA is Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.

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River discharge

As the 25 Years of Progress in Radar Altimetry Symposium continues in the Azores, Angelica Tarpanelli from the Research Institute for Geo-Hydrological Protection of the National Research Council, Italy, joins ESA web TV to explain how river discharge – an important component of the water cycle – affects the salinity, temperature and height of our seas and how it is measured.

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ESA is Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.

Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

Altimetry explained

With the 25 Years of Progress in Radar Altimetry Symposium underway in the Azores, Dr Marcello Passaro from the Technical University of Munich joins ESA web TV to explain how satellite altimeters measure the height of the sea surface. This information is essential for monitoring sea-level rise.

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ESA is Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.

Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

FRIPON network: watching the skies

Mounted at the highest point of ESA’s ESTEC technical centre in the Netherlands, a fisheye camera keeps a constant watch on the sky, looking out for bright fireballs – very bright meteors burning up in the atmosphere.

This is one of a network of more than a hundred specially-designed cameras stretching across Europe, called the Fireball Recovery and Planetary Inter Observation Network, FRIPON. This network gives scientists the ability to determine the trajectory of fireballs and calculate where they fall to guide recovery of any surviving debris.
To learn more about the expanding FRIPON network – and visit ESTEC’s neighbouring FRIPON camera at the Cyclops Observatory – watch this video, originally created as part of ESA’s joint, live webcast with ESO for #AsteroidDay 2018, here: https://http://bit.ly/AsteroidDayESA

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ESA is Europe’s gateway to space. Our mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related.

Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

Aeolus liftoff replay

ESA’s Earth Explorer Aeolus satellite lifted off on a Vega rocket from Europe’s Spaceport in Kourou, French Guiana, at 21:20 GMT (23:20 CEST, 18:20 local time) on 22 August 2018. Aeolus carries one of the most sophisticated instruments ever to be put into orbit. The first of its kind, the Aladin instrument includes revolutionary laser technology to generate pulses of ultraviolet light that are beamed down into the atmosphere to profile the world’s winds – a completely new approach to measuring the wind from space. By profiling the lowermost 30 km of the atmosphere, Aeolus will give scientists global information on the speed of the wind in near-real time. This will improve our understanding of how wind, pressure, temperature and humidity are interlinked. This new mission will also provide insight into how the wind influences the exchange of heat and moisture between Earth’s surface and the atmosphere. These aspects are important for understanding climate change. As well as advancing science and improving weather forecasts, data from Aeolus will be used in air-quality models to improve forecasts of dust and other airborne particles that affect public health.

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Aeolus: of weather and winds

Thanks to the wind, heat is distributed around the planet. Equatorial regions receive more heat from the Sun than other parts of the world. This leads to differences in air temperature, density and pressure, which in turn, cause the air to move – creating wind. This movement of air constitutes the general circulation of the atmosphere, transporting heat away from equatorial regions towards the poles, and returning cooler air to the tropics. The wind clearly plays an important role in weather forecasts, which in turn are not only important for planning our daily affairs, but vital for numerous commercial activities such as farming, fishing, transport, and for taking appropriate measures when extreme weather is on the horizon. Although weather forecasts have advanced considerably in recent years, there is a need for global wind measurements to improve them even further. ESA’s Aeolus mission will fill this gap by providing global wind-profiles in near-real time. The European Centre for Medium-Range Weather Forecasts will process these data and the data in their numerical weather prediction models, which will lead to better forecasting.

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When can I see Rosetta’s comet again?

In August 2015 Comet 67P/Churyumov-Gerasimenko reached its closest point to the Sun along its orbit. ESA’s Rosetta spacecraft was there to monitor the comet’s activity as it reached a maximum, its frozen ices warmed by increasing solar radiation, escaping into space as streams of gas and dust. Rosetta’s work may now be complete, but the comet continues along its 6.4 year orbit around the Sun, which takes it beyond the orbit of Jupiter at its furthest. In three years time it will return to our skies again, and this time may even be visible through binoculars.

Colin Snodgrass of the Open University and ground-based observation campaign coordinator for the comet tells ESA Web TV how scientists are trying to match up what is seen in the wide views of the comet from Earth with the unique close-up images provided by Rosetta, and what astronomers are planning for future observations when it returns to our skies. With the comet making a closer pass to Earth than the last time, and at the same time being closest to the Sun, it will be brighter in our skies than during the Rosetta mission. Get your binoculars ready for late 2021!

This is an ESA Web TV interview filmed in Rhodes, Greece during the 49th Rosetta Science Working Team Meeting in May 2018. The video contains imagery from a range of telescopes (indicated within) along with images from Rosetta’s OSIRIS camera (credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA – CC BY-SA 4.0).

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Aeolus: preparing for launch

ESA’s Martin Kaspers joins us at Europe’s Spaceport in Kourou, French Guiana, where Aeolus is being readied for liftoff on 21 August 2018. Martin discusses some of the challenges they have encountered developing this state-of-the-art satellite mission. Aeolus uses powerful laser technology that probes the lowermost 30 km of our atmosphere to yield vertical profiles of the wind and information on aerosols and clouds – a completely new approach to measuring the wind from space.

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What’s it like to be a freelance designer?

The skills you need to be a freelancer, the challenges you’ll face, and all the other inside info you need to know before deciding to become a freelancer! Please remember to subscribe http://bit.ly/1aE5UOT

Huge thanks to Nancy for sharing her freelance experience! Check out this video we filmed on her channel about living a remote life: https://www.youtube.com/watch?v=Bs6fk0mvgkc

This video is part of my design jobs series where I’m aiming to help you figure out what type of design role will suit you best. See more in this series here: https://www.youtube.com/playlist?list=PLrJQSKQvgHS5939u1Z83MQjZV6t48O9HW

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Hello there! I’m Charli and I’m a web and graphic designer from New Zealand currently living in London and posting design videos every Saturday about tools, projects, and concepts and vlogs every Tuesday about my life as a designer. Please subscribe and say hi in the comments so we can be friends 🙂

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JWST: a beacon for science

Astronomers all over the world are eagerly awaiting the launch of the James Webb Space Telescope. The infrared space telescope, which will carry the largest astronomical mirror ever flown in space is one of the most complex observatories ever built. It will allow unprecedented science, including investigations into the atmospheres of exoplanets and the formation of galaxies, addressing fundamental questions in astronomy. The mission is an international collaboration between NASA, ESA and the Canadian Space Agency, and is planned for launch in 2021 on a European Ariane 5 rocket.

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