Antarctic sea ice region as a source of biogenic organic nitrogen in aerosols

Climate warming affects the development and distribution of sea ice, but at present the evidence of polar ecosystem feedbacks on climate through changes in the atmosphere is sparse. By means of synergistic atmospheric and oceanic measurements in the Southern Ocean near Antarctica, we present evidenc...

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Detalhes bibliográficos
Autores: Dall'Osto, Manuel, Ovadnevaite, Jurgita, Paglione, Marco, Beddows, David C. S., Ceburnis, Darius, Cree, Charlotte, Cortes, Pau, Zamanillo, Marina, Nunes, Sdena O., Perez, Gonzalo L., Ortega-Retuerta, Eva, Emelianov, Mikhail, Vaque, Dolors, Marrasé, Cèlia, Estrada, Marta, Sala, M. Montserrat, Vidal Barcelona, Montserrat, Fitzsimons, Mark F., Beale, Rachael, Airs, Ruth, Rinaldi, Matteo, Decesari, Stefano, Facchini, Maria Cristina, Harrison, Roy M., O'Dowd, Colin, Simó, Rafel
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/125979
Acesso em linha:https://hdl.handle.net/2445/125979
Access Level:acceso abierto
Palavra-chave:Aerosols
Antàrtic, Oceà
Nitrogen
Antarctic Ocean
Descrição
Resumo:Climate warming affects the development and distribution of sea ice, but at present the evidence of polar ecosystem feedbacks on climate through changes in the atmosphere is sparse. By means of synergistic atmospheric and oceanic measurements in the Southern Ocean near Antarctica, we present evidence that the microbiota of sea ice and sea ice-influenced ocean are a previously unknown significant source of atmospheric organic nitrogen, including low molecular weight alkyl-amines. Given the keystone role of nitrogen compounds in aerosol formation, growth and neutralization, our findings call for greater chemical and source diversity in the modelling efforts linking the marine ecosystem to aerosol-mediated climate effects in the Southern Ocean.

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