Imaggeo

Imaggeo On Monday: The sudden stratospheric warming on February 12, 2018

Daniela Domeisen January 11, 2021

The sudden stratospheric warming on February 12, 2018. Credit: Daniela Domeisen (distributed via imaggeo.egu.eu)

The image captures an atmospheric extreme event, a so-called sudden stratospheric warming (SSW) that occurred on Feb. 12, 2018. It is visualized through potential vorticity above the North Pole at the 10hPa level (~30km) above the Earth’s surface and consists of a split of the winter polar vortex into two separate vortices that interact with each other. Although the events are not predictable more ...[Read More]

Imaggeo On Monday: Revealing the secrets of the Arctic sky

Konstantina Nakoudi January 4, 2021

SRevealing the secrets of Arctic sky. Credit: Konstantina Nakoudi (distributed via imaggeo.egu.eu)

When it is dark over Ny Ålesund, Svalbard, a bright green laser beam can be seen quite often, shooting from the AWIPEV Arctic Research Base observatory towards the sky. This beam belongs to “KARLi” the Koldewey Aerosol Raman Lidar, run by the Alfred Wegener Institute for more than 25 years, which contributes to long-term, atmospheric aerosol measurement records. With this system ...[Read More]

Imaggeo On Monday: Konsfjorden and Kronebreen glacier

Andy Smedley December 28, 2020

Konsfjorden and Kronebreen glacier . Credit: Andy Smedley (distributed via imaggeo.egu.eu)

Taken shortly after our departure from Ny-Ålesund after our first “Lost Meteorites” field trial in Greenland testing new equipment that can be used to discover ‘missing’ iron meteorites in Antarctica, the return flight gave incredible views of the surrounding landscape. This photo was taken looking down to the icy waters of Kongsfjorden on the west coast of Svalbard and the ...[Read More]

Imaggeo On Monday: Nature of ice crystals

Katarzyna Walczak December 21, 2020

Nature of ice crystals . Credit: Katarzyna Walczak (distributed via imaggeo.egu.eu)

Moisture coming from the ground is freezing at the entrances of small ground pockets, shaping wonderful natural ice crystals, during a very cold and dry winter in Poland in 2019. Description by Katarzyna Walczak, after the description on imaggeo.egu.eu. Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and video ...[Read More]