Marshall, Matthew G.; Kellerman, Anne M.; Wadham, Jemma Louise; Hawkings, Jon R.; Daneri, Giovanni; Torres, Rodrigo; Pryer, Helena V.; Beaton, Alexander; Ng, Hong Chin; Urra, Alejandra; Robinson, Laura F.; Spencer, Robert G.M.
Journal: Frontiers in Marine Science
Argentino, Claudio; Lugli, Federico; Cipriani, Anna; Panieri, Giuliana
Journal: Limnology and Oceanography : Methods
Ofstad, Siri; Zamelczyk, Katarzyna; Kimoto, Katsunori; Chierici, Melissa; Fransson, Agneta; Rasmussen, Tine Lander
Journal: PLOS ONE
Lumiste, Kaarel; Mänd, Kaarel; Bailey, Jake; Stüeken, Eva E.; Paiste, Kärt; Lang, Liisa; Sepp, Holar; Lepland, Aivo; Kirsimäe, Kalle
Journal: Geochimica et Cosmochimica Acta
Cearreta, Alejandro; Irabien, María Jesús; Arozamena, José E. Gómez; El Bani Altuna, Naima; Goffard, Aintzane; García-Artola, Ane
Journal: Journal of Marine Systems
A cautious return to the sea-ice.
Henry Patton (left), Anna Silyakova and Christine Lockwood-Ireland make their way back to the ice pack in the Greenland Sea. Anna Silyakova was collecting ice cores from the sea ice to investigate methane-associated processes within, when the group was interrupted by a passing polar bear. They had to quickly abandon station and return to the safety of the research vessel Kronprins Haakon.
Methane is a greenhouse gas, and as it rises through the water column it gets captured within the sea-ice structure during ice formation. Although ice typically behaves as a barrier for gases to go through, sea-ice is often permeable and a great mediator of gas exchange in polar regions. Being porous, sea-ice provides paths for gases like methane to pass from the ocean surface to the atmosphere where it can make an impact on climate. So, after a polar bear break the scientists returned to the ice pack, albeit cautiously, and collected more samples.