GeoLog

fog

Imaggeo on Mondays: Rain on the Namib Desert

December 16, 2019
Imaggeo on Mondays: Rain on the Namib Desert
Rain in the Namib Desert. Credit: Christoph Schmidt (distributed via imaggeo.egu.eu).

Pictured here is the arid Namib Desert on a not-so-arid day. The desert is known for its extremely dry conditions and abundance of sunshine, but this photo, taken by Christoph Schmidt, chair of geomorphology at the University of Bayreuth in Germany, gives us a rare glimpse of a rainy day. The Namib Desert spans about 81,000 square kilometres in southwest Africa, stretching throughout the entire co ...[Read More]

Imaggeo on Mondays: White rainbow in the Arctic

November 28, 2016
“Above the foggy strip, this white arch was shining, covering one third of the visible sky in the direction of the ship's bow,” he explains. “It was a so-called white, or fog rainbow, which appears on the fog droplets, which are much smaller then rain droplets and cause different optic effects, which is a reason of its white colour.”
Gateway to the Arctic . Credit: Mikhail Varentsov (distributed via imaggeo.egu.eu)

Despite heading into the long polar night – the time when the sun doesn’t shine in the globe’s most northerly latitudes and when temperatures drop and thick sheets of sea ice form -the Arctic is reported to be 20° C warmer than average for this time of year.  Never has it been more important to understand the effects of climate change on Polar Regions. Mikhail Varentsov, a climate and meteor ...[Read More]

Imaggeo on Mondays: A thermal inversion

May 18, 2015
Imaggeo on Mondays: A thermal inversion
Sunset over a tsunami of clouds - Slovenia. Credit: Cyril Mayaud (distributed via imaggeo.egu.eu ).

This week’s Imaggeo on Mondays image is brought to you by Cyril Mayaud, from the University of Graz (Austria), who writes about an impressive hike and layers of cold and warm air. Thermal inversion is a meteorological phenomenon which occurs when a layer of cold air is trapped near the Earth’s surface by an overlying layer of warmer air. This can happen frequently at the boundary between mountaino ...[Read More]