GeoLog

clouds

Imaggeo On Monday: The evolution of a cloud during a day

Imaggeo On Monday: The evolution of a cloud during a day

A cloud in the lee of the Patagonian Andes observed during an entire day. The shape of the cloud changed from lenticular to whirl- and funnel-shaped. Description by Christoph Mayr, after the description on imaggeo.egu.eu.   Konstantinos Kourtidis also added a comment to the image, explaining more about how lenticular clouds like these can form: …[Read More]

Imaggeo on Mondays: Inside the whale’s mouth

Imaggeo on Mondays: Inside the whale’s mouth

Often there are moments in our lives when we are reminded of the strength and magnitude of our environment, whether that’s trekking through a mountain range or gazing at the horizon from the ocean shore. Yet arguably there are few things that can make you feel as small as a particularly powerful summer storm. “The …[Read More]

Imaggeo on Mondays: Cumulonimbus, king of clouds

Imaggeo on Mondays: Cumulonimbus, king of clouds

This wonderful mature thunderstorm cell was observed near the German Aerospace Center (DLR) Oberpfaffenhofen. A distinct anvil can be seen in the background meanwhile a new storm cell is growing in the foreground of the cumulonimbus structure. Mature storm cells like this are common in Southern Germany during the summer season. Strong heat, enough moisture, …[Read More]

Imaggeo on Mondays: Refuge in a cloudscape

Imaggeo on Mondays: Refuge in a cloudscape

The action of glaciers combined with the structure of the rock to form this little platform, probably once a small lake enclosed between a moraine at the mountain side and the ice in the valley. Now it has become a green haven in the mountain landscape, a perfect place for an alp. In the Alps, …[Read More]

Extraordinary iridescent clouds inspire Munch’s ‘The Scream’

Screaming clouds

Edvard Munch’s series of paintings and sketches ‘The Scream’ are some of the most famous works by a Norwegian artist, instantly recognisable and reproduced the world over. But what was the inspiration behind this striking piece of art? The lurid colours and tremulous lines have long been thought to represent Munch’s unstable state of mind; …[Read More]

GeoTalk: How are clouds born?

GeoTalk: How are clouds born?

Geotalk is a regular feature highlighting early career researchers and their work. In this interview we speak to Federico Bianchi, a researcher based at University of Helsinki, working on understanding how clouds are born. Federico’s quest to find out has taken him from laboratory experiments at CERN, through to the high peaks of the Alps …[Read More]

Imaggeo on Mondays: Isolated storm

Imaggeo on Mondays: Isolated storm

Clouds and storms are formed when warm, moist air rises. This causes the air to expand and cool: forming clouds as the moisture condenses onto particles suspended in the air (called cloud condensation nuclei). Normally, air rises from surface heating, or when warm and cold air pockets collide, or if air is pushed upwards when …[Read More]

Imaggeo on Mondays: Fuelling the clouds with fire

Wildfires frequently break out in the Californian summer. The grass is dry, the ground parched and a small spark can start a raging fire, but burning can begin even when water is about. Gabriele Stiller sets the scene for a blaze beside Mono Lake, exploring the events that got it going and what it may …[Read More]