Climate changes modulated the history of Arctic iodine during the Last Glacial Cycle

Autor: Juan Pablo Corella, Niccolo Maffezzoli, Andrea Spolaor, Paul Vallelonga, Carlos A. Cuevas, Federico Scoto, Juliane Müller, Bo Vinther, Helle A. Kjær, Giulio Cozzi, Ross Edwards, Carlo Barbante, Alfonso Saiz-Lopez

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)

Iodine is important for new particle formation in the atmosphere, but how it varies over long time scales is not well known. Here, the authors present ice core data from the last 127,000 years that show that iodine varied between glacials and intergl

Externí odkaz: https://doaj.org/article/db45eefbb0634818a4ad2eed36a6138a

Rapid increase in atmospheric iodine levels in the North Atlantic since the mid-20th century

Autor: Carlos A. Cuevas, Niccolò Maffezzoli, Juan Pablo Corella, Andrea Spolaor, Paul Vallelonga, Helle A. Kjær, Marius Simonsen, Mai Winstrup, Bo Vinther, Christopher Horvat, Rafael P. Fernandez, Douglas Kinnison, Jean-François Lamarque, Carlo Barbante, Alfonso Saiz-Lopez

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)

Despite its chemical importance, the evolution of atmospheric iodine concentrations over time is unknown. Here, the authors show that North Atlantic atmospheric iodine levels have tripled since 1950, and propose ozone pollution and enhanced biologica

Externí odkaz: https://doaj.org/article/b6b5f70e1479447ba5f48a58666e3423

Sea ice fluctuations in the Baffin Bay and the Labrador Sea during glacial abrupt climate changes

Autor: Federico Scoto, Henrik Sadatzki, Niccolò Maffezzoli, Carlo Barbante, Alessandro Gagliardi, Cristiano Varin, Paul Vallelonga, Vasileios Gkinis, Dorthe Dahl-Jensen, Helle Astrid Kjær, François Burgay, Alfonso Saiz-Lopez, Ruediger Stein, Andrea Spolaor

Publikováno v: Scoto, F, Sadatzki, H, Maffezzoli, N, Barbante, C, Gagliardi, A, Varin, C, Vallelonga, P, Gkinis, V, Dahl-Jensen, D, Kjaer, H A, Burgay, F, Saiz-Lopez, A, Stein, R & Spolaor, A 2022, ' Sea ice fluctuations in the Baffin Bay and the Labrador Sea during glacial abrupt climate changes ', Proceedings of the National Academy of Sciences of the United States of America, vol. 119, no. 44, 2203468119 . https://doi.org/10.1073/pnas.2203468119

9 pags., 5 figs., 2 tabs.
Sea ice decline in the North Atlantic and Nordic Seas has been proposed to contribute to the repeated abrupt atmospheric warmings recorded in Greenland ice cores during the last glacial period, known as Dansgaard-Oeschg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::985b68562ee1673e7ac7ea4114ca542d
http://hdl.handle.net/10261/296059

Accelerating ice flow at the onset of the Northeast Greenland Ice Stream

Autor: Aslak Grinsted, Christine S. Hvidberg, David A. Lilien, Nicholas M. Rathmann, Nanna B. Karlsson, Tamara Gerber, Helle Astrid Kjær, Paul Vallelonga, Dorthe Dahl-Jensen

Publikováno v: Grinsted, A, Hvidberg, C S, Lilien, D A, Rathmann, N M, Karlsson, N B, Gerber, T, Kjaer, H A, Vallelonga, P & Dahl-Jensen, D 2022, ' Accelerating ice flow at the onset of the Northeast Greenland Ice Stream ', Nature Communications, vol. 13, no. 1, 5589 . https://doi.org/10.1038/s41467-022-32999-2

A new study finds that the North East Greenland ice stream is not as stable as previously thought and that this will affect its future evolution.Mass loss near the ice-sheet margin is evident from remote sensing as frontal retreat and increases in ic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9644bb2a5e3c614c6e9430c930606c1d
https://doi.org/10.1038/s41467-022-32999-2

Rapid reductions and millennial-scale variability in Nordic Seas sea ice cover during abrupt glacial climate changes

Autor: Niccolò Maffezzoli, Kirsten Fahl, Bo Møllesøe Vinther, Helle Astrid Kjær, Sarah M P Berben, Andrea Spolaor, Paul Vallelonga, Trond Dokken, Henrik Sadatzki, Eystein Jansen, M.H. Simon, Ruediger Stein

Publikováno v: Proc Natl Acad Sci U S A
Proceedings of the National Academy of Sciences of the United States of America 117 (2020): 29478–29486. doi:10.1073/pnas.2005849117
info:cnr-pdr/source/autori:Sadatzki, Henrik; Maffezzoli, Niccolo; Dokken, Trond M.; Simon, Margit H.; Berben, Sarah M. P.; Fahl, Kirsten; Kjor, Helle A.; Spolaor, Andrea; Stein, Ruediger; Vallelonga, Paul; Vinther, Bo M.; Jansen, Eystein/titolo:Rapid reductions and millennial-scale variability in Nordic Seas sea ice cover during abrupt glacial climate changes/doi:10.1073%2Fpnas.2005849117/rivista:Proceedings of the National Academy of Sciences of the United States of America/anno:2020/pagina_da:29478/pagina_a:29486/intervallo_pagine:29478–29486/volume:117
Sadatzki, H, Maffezzoli, N, Dokken, T M, Simon, M H, Berben, S M P, Fahl, K, Kjor, H A, Spolaor, A, Stein, R, Vallelonga, P, Vinther, B M & Jansen, E 2020, ' Rapid reductions and millennial-scale variability in Nordic Seas sea ice cover during abrupt glacial climate changes ', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 47, pp. 29478-29486 . https://doi.org/10.1073/pnas.2005849117
Proceedings Of The National Academy Of Sciences Of The United States Of America (0027-8424) (Proceedings of the National Academy of Sciences), 2020-11, Vol. 117, N. 47, P. 29478-29486

Constraining the past sea ice variability in the Nordic Seas is critical for a comprehensive understanding of the abrupt DansgaardOeschger (D-O) climate changes during the last glacial. Here we present unprecedentedly detailed sea ice proxy evidence

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::131c29c8a2e727ff58713cc5a0b316c8
https://doi.org/10.1073/pnas.2005849117