Geomorphology, by Paul John Murphy. Find geoscience images (and upload yours!) at imaggeo.egu.eu.

A new study published this month in The Cryosphere shows that all polar bear populations, found in 19 distinct Arctic regions, face a shorter sea ice season, with ice-covered days declining at the rate of 7 to 19 days per decade between 1979 and 2014. Other researchers, publishing in Earth Surface Dynamics, have investigated how the oxidation of sulfides in recent landslides drives intense weathering and how this process could be an important CO2 source. Meanwhile, a study in Biogeosciences reports observations to detect ocean carbonate chemistry outside preindustrial bounds to better understand ocean acidification impacts. Find out more about these and other studies published in EGU journals in the past month by following the links below.

In other EGU news, check our website and social media channels in the coming weeks, as we will start the call for abstracts to the EGU 2017 General Assembly in October. In addition, we are celebrating Earth Science Week (October 9–15) with a number of live question & answer sessions on Twitter and other activities. Stay tuned!