Greenland is a critical part of the world, which is regularly covered on this blog, because it hosts the second largest ice body on Earth – the Greenland Ice Sheet. This ice sheet, along with its small peripheral ice caps, contributes by 43% to current sea-level rise. However, despite being the world’s largest island Greenland, appears disproportionately large on the most common world maps (Fig. 2 ...[Read More]
Image of the Week – See sea ice from 1901!
Aerial photograph of the German explorer Erich von Drygalski’s ship, making its way through Antarctic sea ice. This picture was obtained from a hot air balloon in 1901. The log books of this ship were used to study sea-ice conditions at the turn of the century in the Antarctic. [Credit: National Oceanic and Atmospheric Administration/Department of Commerce]
The EGU Cryosphere blog has reported on several studies of Antarctic sea ice (for example, here and here) made from high-tech satellites, but these records only extend back to the 1970s, when the satellite records began. Is it possible to work out what sea ice conditions were like before this time? The short answer is YES…or this would be a very boring blog post! Read on to find out how hero ...[Read More]
Image of the Week – Fifty shades of snow
Fig. 1: Green snow [Credit: NASA's Earth Observatory]
When I think of snow, I tend to either think about the bright white ski slopes in the mountains or the large white areas in the Arctic. However, natural phenomena can lead to colorful snow. Our Image of the Week shows snow can be green! Snow can also turn orange, pinkish, grey and even yellow… But where do these different shades of snow come from? White The most common color of snow is white (see ...[Read More]
Image of the Week — High altitudes slow down Antarctica’s warming
When it comes to climate change, the Arctic and the Antarctic are poles apart. At the north of the planet, temperatures are increasing twice as fast as in the rest of the globe, while warming in Antarctica has been milder. A recent study published in Earth System Dynamics shows that the high elevation of Antarctica might help explain why the two poles are warming at different speeds. The Arctic vs ...[Read More]
Image of the Week – A rather splendid round-up of CryoEGU!
The 2017 edition of the EGU general assembly was a great success overall and for the cryospheric division in particular. We were for instance thrilled to see that two of the three winning photos of the EGU Photo contest featured ice! To mark the occasion we are delighted to use as our image of this week, one of these pictures, which shows an impressive rapid in the Pite River in northern Sweden. ...[Read More]
Image of the Week — We’re heading for Vienna
A Viennese tram during EGU 2016. Do you recognise the flag on the left? [Credit: F. Lepoudre]
♫ Tatata taaa tatatatata Tatata taaa tatatatatatatata We’re heading for Vienna (Vienna) And still we stand tall ‘Cause maybe they’ve seen us (seen us) And welcome us all, yeah With so many miles left to go And things to be found (to be found) I’m sure that we’ll all miss that so it’s the … ♫ …congratulations, you’ve recognise the song….. ...[Read More]
A brief guide to navigating EGU 2017!
Are you going to the EGU General Assembly in Vienna next week? If so, read on for a quick guide to navigating the week: Where to start, what to see and how to meet people and enjoy yourself! After all, the meeting is as much about the opportunities meet scientists from all over the world as it is about the science itself. How on Earth do I know what is going on?! The EGU General Assembly is a mass ...[Read More]
Image of the Week – Ice on Fire (Part 2)
A glacier cave on the flank of Mutnovsky volcano, Kamchatka Peninsula, Russia. Sunlight filters through the glacial ice and a stream runs through the cave - fed by volcanic hot springs [Credit: Sergey Krasnoshchokov, National Geographic].
This week’s image looks like something out of a science fiction movie, but sometimes what we find on Earth is even more strange than what we can imagine! Where the heat of volcanoes meets the icy cold of glaciers strange and wonderful landscapes are formed. The Kamchatka Peninsula, in the far East of Russia, has the highest concentration of active volcanoes on Earth. Its climate is cold due ...[Read More]
Image of the Week — Hidden lakes in East Antarctica !
Underwater picture of englacial lake 4m
below the surface [Credit: S.
Lhermitte].
Who would have guessed that such a beautiful picture could get you interviewed for the national news?! Certainly not me! And yet, the photo of this englacial lake (a lake trapped within the ice in Antarctica), or rather science behind it, managed to capture the media attention and brought me, one of the happy co-author of this study, on the Belgian television… But what do we see on the pic ...[Read More]
Image of The Week – The Pulsating Ice Sheet!
Figure 1: (a) Ice sheet at its most advanced state, the terminus is grounded 300 m beneath sea level (b) An ocean-warming event triggers retreat (c) Retreat is amplified by enhanced calving as the ice sheet retreats into deeper water (d) After the collapse, the ice sheet is in its most retreated position. Isostatic adjustment uplifts the bed (and sill) which will allow the ice sheet to advance again. Insets show a close-up around the sill. [Credit:
Bassis et al., 2017]
During the last glacial period (~110,000-12,500 years ago) the Laurentide Ice Sheet (North America) experienced rapid, episodic, mass loss events – known as Heinrich events. These events are particularly curious as they occurred during the colder portions of the last glacial period, when we would intuitively expect large-scale mass loss during warmer times. In order to understand mass loss m ...[Read More]