EGU Guest blogger

The future of Arctic sea ice

David Docquier July 10, 2020

Figure 1: Sketch that shows the presence (in white, ‘ice covered’) and absence (in blue, ‘ice free’, i.e. less than 1 million km2 of sea ice) of Arctic sea ice for different levels of warming (X axis) and the different months of the year (Y axis), based on the extrapolation of observations. The estimated warming in 2018 is marked with ‘today’. Figure credit: Fig. 1 of Notz and Stroeve (2018).

The illustration above shows a sketch of the evolution of Arctic sea ice for different levels of warming and the different months of the year, based on the simple extrapolation of observations. A new study, in which I was involved, uses the latest available global climate models and shows that the Arctic Ocean could become practically ice free at the end of the summer for the first time before 205 ...[Read More]

Image of the week – The curious case of “glacier mice”

Scott Hotaling July 3, 2020

Did you know that glacier mice can be found at the surface of some glaciers? They’re not the tiny rodent you might be imagining, but actually little balls of moss, which appear to be full of mysteries still to be uncovered… What is a “glacier mouse”? On glaciers around the world, mostly at high-latitudes in the northern hemisphere, little balls of moss develop and move around the ice. Origi ...[Read More]

Careers outside of academia

Jenny Turton June 26, 2020

Is it time to step into your new career? Photo credit: Maria Tsekhmistrenko, Imaggeo

You’ve just finished your PhD or postdoc… now what? Perhaps you’re thinking of a non-academic career, but don’t know where to start, or which skills you need? Up to 70% of scientists move into non-academic careers after graduation (The Royal Society, 2010). But finding useful information and advice is hard. In today’s blog, we summarise the EGU Webinar ‘Careers outside of academia’ which took plac ...[Read More]

Did you know… the Andes are so cryo-diverse?

Lucas Ruiz June 19, 2020

Extending for almost 8,000 km along the west of South America, the Andes are the longest continental mountain range in the world. They portray an impressive richness and diversity of cryospheric features, including: the most substantial extension of tropical glaciers on Earth, one of the highest densities of rock glaciers, the largest glacierized area in the Southern Hemisphere outside Antarctica, ...[Read More]

Did you know… about the ice content in mountain permafrost?

Coline Mollaret June 12, 2020

Photo 1: Permafrost monitoring site at Stockhorn ridge (foreground), in front of the glacierized Monte Rosa massif (Valais, Swiss Alps). Photo credit: Coline Mollaret

Through the eyes of a researcher studying mountain processes in the European Alps in the context of a global warming climate, let’s discover how geophysical methods help to better understand frozen ground! Permafrost defines a thermal state, i.e. permafrost is soil, sediment, or rock that remains at or below 0°C during at least two consecutive years. As permafrost is only defined by its temperatur ...[Read More]

Did you know… the surface of melting glaciers is one of the most radioactive places on Earth?

Giovanni Baccolo May 29, 2020

Small cryoconite holes covered by thin ice lids. Photo credit : Giovanni Baccolo

Recent studies show that glaciers are significantly affected by pollution, and in general by human activities, but few people would imagine that their surface contains traces of nuclear contamination and radioactivity. It has been recently claimed that high amounts of radioactivity have accumulated on glaciers, only beaten by the radioactivity levels of sites where nuclear incidents and tests have ...[Read More]

Did you know… tropical cyclones cause large snowfall on Kilimanjaro’s glaciers?

Emily Collier May 22, 2020

Tropical cyclones are an important part of the weather in the southwest Indian Ocean each year, from November through April. These storms can cause massive destruction and loss of life when they make landfall, which happens most often on the islands of Mauritius and Madagascar and the coastal region of Mozambique. However, until recently, relatively little was known about their impacts on the high ...[Read More]

©LEt’sGO to Antarctica !

Brice Van Liefferinge and Marie Cavitte May 15, 2020

The camp site deployed to collect radar data with (a) the polar vehicle (in orange in the centre) or (b) snowmobiles (on the right). Other types of measurements are often carried out simultaneously: atmospheric gas composition, snow/ice core drilling, surface photogrammetry, etc. Can you spot them all ? Photo credit: Brice Van Liefferinge

With the current situation, polar fieldwork might be/have been cancelled and we have a suggestion to remedy your field-blues… Why not use ©LEGO to pretend you’re back in the field with the added bonus that you get to be in the warmth and comfort of your home! Here, we’ve re-enacted radar fieldwork that took place a year and a half ago in Antarctica… But first, let’s start with some backgroun ...[Read More]

What to expect from shareEGU20? Tips and tricks from the Cryosphere perspective

EGU Cryosphere Team and the Early career Glaciologist Group (EGG) April 30, 2020

Image credit: Daniela Rapavá (distributed via imaggeo).

Despite the current situation, the European Geosciences Union has decided not to give up on its most important event of the year: the EGU General Assembly. While they usually meet in Vienna every late April/early May, geoscientists will meet online this year! This event, called “shareEGU20” gives every interested geoscientist the opportunity to attend the EGU general assembly, free of charge and f ...[Read More]

Icequakes, the little brothers of earthquakes, what do they tell us about ice flow?

Sofia-Katerina Kufner April 24, 2020

Figure 1: Location of Rutford Ice Stream (inset, top), the 2019/2020 field team (inset, bottom) and our camp in the shade of Mount Vinson, Antarctica’s highest peak at 4892 metres. Figure courtesy of Mike Kendall and Sofia Kufner.

Each day, several tens of tiny earthquakes happen beneath Rutford Ice Stream in Antarctica. These events are so small that no human would be able to feel them – yet, scientists can use recordings of these so-called “icequakes” to obtain valuable information on the way ice flows in Antarctica. Read on to find out how… What are icequakes? So we’ve all heard of earthquakes, but what ...[Read More]