Researchers found ancient methane in every river sampled from Svalbard glaciers, indicating a natural feedback loop that may worsen as the Arctic warms. The study suggests that the physical state of the glacier bed and geological sources of methane are key factors in methane release.
Researchers have developed a way to improve records of past high-latitude ocean change by analyzing tiny plankton shells called foraminifera. The new calibration tool extends the key temperature tool into colder seas, enabling more accurate reconstructions of climate and ocean circulation changes.
A new study suggests that rapidly melting Antarctic ice shelves can lead to a significant increase in global sea levels. The researchers found that long, channel-like grooves on the underside of these ice shelves can trap warm ocean water, causing local melting and potentially weakening the structural strength of the ice shelf.