The Arctic Ocean was covered by a shelf ice and filled with freshwater
Alfred Wegener Institute (AWI)
Published: 3 February 2021
New research shows the Arctic Ocean was freshwater under thick ice twice in 150,000 years. Sudden releases may explain past abrupt climate shifts, reshaping sea level and climate models.
Keywords: Arctic, freshwater, ice sheet, tipping point
The Marine Soundscape and Anthropogenic Nois
Alfred Wegener Institute (AWI)
Published: 4 February 2021
Ocean noise from ships, construction, and extraction harms many marine species, disrupting communication and behavior. A global study urges regulation and highlights existing solutions to reduce noise pollution.
Keywords: ocean noise, marine life, pollution, regulation, communication
42,000-year-old sub-fossil trees allow more accurate analysis of the last reversal of the Earth's magnetic field
Alfred Wegener Institute (AWI)
Published: 18 February 2021
Earth’s last magnetic reversal 42,000 years ago weakened the magnetic field, increasing cosmic radiation and atmospheric changes. Kauri tree data now allows precise dating and insight into its environmental impacts.
Keywords: magnetic field, Laschamps event, kauri tree, cosmic radiation, atmosphere
