GeoLog

greenhouse gases

A 12-meter sediment core reveals secrets of the Arctic’s past climate

January 24, 2025
A 12-meter sediment core reveals secrets of the Arctic’s past climate
Picture taken by Annie Spratt

Extracted from a depth of 2,500 meters, a giant 12-meter long marine sediment core from the Fram Strait, between Svalbard and Greenland, preserves a climate record spanning up to 400,000 years. Its sediment layers offer crucial insights into the Arctic’s past, helping Dr Jochen Knies and his research team answer two important question: Was the Arctic ever ice-free during past warm periods? W ...[Read More]

Why hydrogen – the ‘fuel of the future’ – may not be as clean as we think

August 24, 2022
Why hydrogen – the ‘fuel of the future’ – may not be as clean as we think
Credit: Emmanuel Brocard (from imaggeo.egu.eu)

Around the world, the shift to hydrogen is being considered a key strategy to decarbonize the environment, with experts even calling it the fuel of the future. Hydrogen now features in all eight of the European Commission’s net zero emissions scenarios for 2050, promising to end our dependence on fossil fuels and reduce CO2 emissions across industries. So it comes as no surprise that billions of e ...[Read More]

Imaggeo on Mondays: Air samples from afar

February 25, 2019
Imaggeo on Mondays: Air samples from afar
Air samples from afar. Credit: Emma Elvidge (distributed via imaggeo.egu.eu)

I’ve taken many photos on fieldwork, everywhere from Malaysia to Antarctica but this particular photo was taken in my ‘home’ lab at the University of East Anglia (UEA) in Norwich, UK. Atmospheric scientists collect air samples canisters such as these from around the world: from high altitude research aircraft (such as the Geophysica), long-term measurement time series (such as Ca ...[Read More]