European Space Agency Flickr Update

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Prague
06-05-2016 04:07 PM CEST

europeanspaceagency posted a photo:

Prague

The Sentinel-2A satellite captured the capital of the Czech Republic, Prague. Divided by the Vltava River, it is home to some 1.25 million people and its historic centre is a World Heritage Site.

Living Planet Symposium 2016: For the latest news, interviews and web streaming of the world’s largest Earth observation conference, being held in Prague on 9–13 May, visit our dedicated Living Planet Symposium 2016 web page

Credit: Contains modified Copernicus Sentinel data (2015), processed by ESA

Zachariae glacier
06-05-2016 10:19 AM CEST

europeanspaceagency posted a photo:

Zachariae glacier

This image taken over part of northeast Greenland’s coast combines three images from Sentinel-1A’s radar on 15 February, 10 March and 3 April 2016.

The shades of grey on the left side of the image depict the static landmass, while the colours on the right show changes in sea-ice type and cover between the three radar scans.

Near the centre-left we can see the Zachariae Isstrom glacier, which is losing about five billion tonnes of ice a year to the ocean.

Zachariae’s dynamics have been changing over the last few years, calving high volumes of icebergs, which will inevitably affect sea levels. It is estimated that the entire Zachariae Isstrom glacier in northeast Greenland holds enough water to raise global sea levels by more than 46 cm.

Scientists have determined that the bottom of Zachariae Isstrom is being rapidly eroded by warmer ocean water mixed with growing amounts of meltwater from the ice sheet surface.

Zachariae and the nearby Nioghalvfjerdsfjorden to its north are two of six glaciers being monitored in near-real time by Sentinel-1 through a new web portal by the UK’s Centre for Polar Observation and Modelling. The portal provides frequent maps of ice velocity of key glaciers in both Greenland and Antarctica.

The polar regions are some of the first to experience and visibly demonstrate the effects of climate change, serving as barometers for change in the rest of the world. It is therefore critical that polar ice is monitored comprehensively and in a sustained manner.

This image is also featured on the Earth from Space video programme.

Credit: Contains modified Copernicus Sentinel data (2016), processed by ESA

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