CR
Cryospheric Sciences

EGU Guest blogger

This guest post was contributed by a scientist, student or a professional in the Earth, planetary or space sciences. The EGU blogs welcome guest contributions, so if you've got a great idea for a post or fancy trying your hand at science communication, please contact the blog editor or the EGU Communications Officer to pitch your idea.

Education in glaciology: Witnessing the death of a glacier

January 17, 2020
Education in glaciology: Witnessing the death of a glacier
Fig.1. View of the Hochjochferner and its prominent medial moraine during the “Almabtrieb” in September 2003. The bumps on the glacier are from support pillars of a ski lift. Photo credit: Carleen Tijm-Reijmer

The Karthaus summer school on Glaciers and Ice Sheets in the Climate System has a long history of training many generations of PhD students, thus forming professional networks that have lasted throughout their careers. The Karthaus summer school has been described in detail in a previous Cryoblog post. Here we want to focus on the story of a glacier… Hochjochferner, a retreating glacier One ...[Read More]

Did you know? – Ocean bathymetry can control Antarctic mass loss!

January 10, 2020

Ice shelves (the floating parts of the Antarctic ice sheet) play a fundamental role in the stability of the Antarctic ice sheet (see this post) and, therefore, its contribution to global sea-level rise. They lose mass primarily through melting at their bases, which are in contact with the ocean. This thins them and makes them more vulnerable, reducing their stabilising potential and causing more i ...[Read More]

Cryo History – How airborne glaciologists measured the movement of glaciers before the satellite era

December 13, 2019

Recent work published in my department at the Geological Survey of Denmark and Greenland (GEUS) focused on solid ice discharge into the ocean from the Greenland Ice Sheet from 1986 to 2017 (Mankoff et al. 2019). Solid ice discharge is the ice that is lost from a glacier as it flows towards the coast and eventually breaks off as icebergs into the ocean (i.e. calving). Solid ice discharge is an impo ...[Read More]

Cryo Adventures – What’s currently going on in Antarctic science?

December 6, 2019
Cryo Adventures – What’s currently going on in Antarctic science?
Map of the various locations mentioned in the text. Green markers are bases, red markers measurement campaign locations [Credit: Andy Smedley].

As Christmas gets closer, days are getting shorter in the northern hemisphere. A good excuse to get cosy inside on the sofa, drinking tea and eating Christmas biscuits. Meanwhile, a few thousand of scientists are heading “South”, to Antarctica, where the lengthening days provide the perfect conditions to conduct a whole variety of scientific field expeditions… Science in Antarctica Just last ...[Read More]

Did you know…? Antarctica Day 2019 – 60 years of peace

November 29, 2019
Did you know…? Antarctica Day 2019 – 60 years of peace
Figure 1: Scientists fly the flags for the school children who designed them for Antarctica Day [Photo credit: UK Polar Network].

December 1st 2019 marks the 60th anniversary of the signing of the Antarctic treaty. To celebrate the signing of the treaty, ‘Antarctica Day’ now occurs each year on December 1st. But what is the Antarctic Treaty? How do people celebrate? This week’s blog post will tell you everything you need to know, just in time for celebrations! Antarctic Treaty The Antarctic Treaty was originally signed by 12 ...[Read More]

Cryo-Comm – Six reasons why you should communicate your science

November 15, 2019

What inspired you to get into polar or cryospheric research? Perhaps it was a passion for the outdoors, a drive to protect the environment for the people and animals that live there, or a fascination with wild places. For me, it was all three – and the more I learned about Antarctic climate science, the more I realised that the polar regions are vital to the functioning of a healthy planet, and so ...[Read More]

Did you know… about the fluctuating past of north-east Greenland?

November 8, 2019
Did you know… about the fluctuating past of north-east Greenland?
Fig. 1: Map of the north-east sector of Greenland showing the location of the North East Greenland Ice Stream (NEGIS) with its three outlet glaciers (Nioghalvfjerdsfjorden (79N), Zachariae Isstrøm (ZI) and Storstrømmen Glacier (SG)), and the offshore bathymetry and the position of its margin reconstructed for the Last Glacial Maximum (LGM) (dotted black line) [Credit: Ilaria Tabone].

Recent geological data shows that during a very cold phase of our Earth’s climate (between 40,000 and 26,000 years ago), there was a huge expansion of polar ice sheets, yet the north-eastern part of the Greenland ice sheet was less extensive than today. How could this have occurred? In this post we shed light on the potential causes of this ice sheet behaviour. What do we know about present- ...[Read More]

For Dummies – How do wildfires impact permafrost? [OR.. a story of ice and fire]

November 1, 2019

Wildfire – like the ones observed in the Northwest Territories, Canada in 2014 (Fig. 1) – is a natural part of permafrost landscapes, but fires are expected to get more frequent and severe as the climate warms. This could accelerate the degradation of permafrost, with negative consequences on the local and global scale! We have a pretty good understanding of how permafrost responds to fire t ...[Read More]

Ice-hot news: The IPCC Special Report on the Oceans and the Cryosphere under Climate Change

October 30, 2019
Ice-hot news: The IPCC Special Report on the Oceans and the Cryosphere under Climate Change
[Credit: Martin Robles on Unsplash]

You have probably heard the name “Intergovernmental Panel on Climate Change (IPCC)” mentioned frequently over the last few years. The IPCC is the United Nations body for assessing science related to climate change and it publishes global assessment reports on this topic every 5 to 10 years. Due to the current urgency of the global climate crisis and the need for more information by decision makers ...[Read More]

Cryo-adventures – Behind the scenes of cryo-fieldwork

October 25, 2019
Cryo-adventures – Behind the scenes of cryo-fieldwork
Figure 1: On top of Svínafellsjökull glacier, Iceland 2018 [Credit: Saule Akhmetkaliyeva].

As the Arctic is warming faster than the global average, Arctic glaciers are rapidly melting. My research is about the fate of glacial organic carbon when the ice containing it melts. To investigate these processes, I travelled to several glaciers, an activity full of challenges… and rewards! My research Glacier ice covers about 11% of Earth’s land surface, and contains within it a globally ...[Read More]