Welcome to Kongsfjorden in Svalbard. The front of the glaciers terminating into the sea is an ecological hotspot, home to many marine animals, like kittiwakes, who love to hunt here. They feed on small fish and shrimp, which at marine-terminating glacier fronts are brought to the surface by upwelling glacial meltwater. Retreating glaciers lose their …[Read More]
Climate Change & Cryosphere
Climate change and cryosphere – A wetter future for the Arctic
The latest climate models show that Arctic precipitation is changing more rapidly than previously projected with an earlier transition to a rainfall-dominated precipitation. This rapid change in precipitation will have huge implications for the Arctic ecosystem as well as those who live within the region. Arctic precipitation change, why is it so important? The rapid …[Read More]
Did you know… Arctic lightning strikes are on the rise?
When we think of lightning, it is often accompanied by warm summer nights, tropical storms and a sticky feeling when we try to sleep. However, lightning also happens in the cold Arctic, and is even increasing in frequency. But how and why? And why does that matter? What is lightning? Lightning is caused by a …[Read More]
Climate Change & the Cryosphere: Fjord sediments reveal how melting ice impact the marine ecosystem
It is scary how fast the Greenland Ice Sheet is melting and how much freshwater it is discharging to the coastal areas around Greenland. This freshening is having a serious impact to coastal marine primary production, which is the foundation of the Arctic marine food web. Now, because of increased melting and freshwater discharge, we …[Read More]
The Polar Amplifier
It’s no secret that the Arctic is warming faster than the rest of the planet, but why? Polar Amplification (often called Arctic Amplification) is the mechanism at play. In this week’s blog, we find out about its origins and why it happens. Early Discoveries In 1969, Russian scientist Mikhail Budyko and US scientist William Sellers …[Read More]
The EverDrill project: shedding light on the interior of a Himalayan debris-covered glacier
We know that glaciers are actively responding to climate change, but what is happening on the inside? The conditions within a glacier strongly influence its behaviour, but the deep and dark depths of a glacier are difficult to access – we know very little about this remote environment. The EverDrill project (2016 – 2019), funded …[Read More]
Will the ice break out? – a story from the farthest north ice trails
“If there is a pan of ice that hits the shorefast ice from the North, it can take off a sheet of ice, and you can go with it.” The serious expression of the 67-year-old whaling captain made it impossible to mistake the potential risk associated with the ancient tradition of spring whale hunting from …[Read More]
Climate change and the Cryosphere – With ice we are also losing a piece of our cultural heritage: a glaciologist’s perspective
Glaciers are shrinking and disappearing in many regions of the Earth. Did you know? I am joking of course. We are flooded with news talking about this. The decline of glaciers has manifold and severe consequences and is one of the most powerful icons of climate change. Here I want to talk a little bit …[Read More]
It’s getting hot in here: Ancient microbes in thawing permafrost
Did you know that the oldest organism on Earth is believed to be a microorganism found in 3-million-year-old permafrost in Siberia? There, it was living at a cosy average temperature of -10 °C at 14 m depth. Or did you hear that some other Arctic soil microorganisms can happily live at extreme temperatures down to …[Read More]
Mapping sea ice from space
Reduced and thinner sea ice makes Arctic waters increasingly appealing for shipping, fishing, tourism, and mineral exploration. However, with increased accessibility and more dynamic ice conditions comes a greater risk for ship crews to encounter sea ice and icebergs outside of their usual seasonal limits. To help them navigate, timely and reliable sea ice information …[Read More]