Cryospheric Sciences

Cryo-Adventures – Hunting snow algae in the Alps

Biagio Di Mauro October 8, 2021

Figure 1. Researchers and students measuring snow optical properties during a snow algae bloom in the beautiful landscape of the Brenta Dolomites (Rhaetian Alps). [Credit: Cristian Ferrari]

We are used to think of algae as marine or lacustrine organisms, but they are actually able to thrive also on the cryosphere. In a previous post, we learnt how snow algae live and reproduce on snow. Now we will explore how and why scientists study snow algae, and how social media can be used for identifying new study areas. Snow algae in the Alps Snow algae in the Alps have been overlooked or conf ...[Read More]

Image of the Week – What darkens snow and ice?

Biagio Di Mauro September 18, 2020

“Be thou as chaste as ice, as pure as snow”. Hamlet, Act 3 Scene 1 (W. Shakespeare) Snow and ice are not always as pristine as one may think. If you have ever walked on a glacier or on a snowfield during summer, you might have already noticed that. In fact, both snow and ice are often darkened by impurities. In this blog post, you will learn about the main processes leading to ice and snow darkeni ...[Read More]

Image of the Week – Life in blooming melting snow

Lenka Procházková April 26, 2019

The new snow melting season has just started in the mountains of Europe and will last, in many alpine places, until the end of June. Weather in the middle of April is changeable. In the last few days sub-zero air temperatures have prevailed in the mountains during the day. In a frame of an international research project, me (Charles University) and Daniel Remias (Applied University Upper Austria), ...[Read More]

Image of the Week – Fifty shades of snow

Clara Burgard July 21, 2017

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]