South African dust contribution to the high southern latitudes and East Antarctica during interglacial stages

Autor: Stefania Gili, Aubry Vanderstraeten, Amélie Chaput, James King, Diego M. Gaiero, Barbara Delmonte, Paul Vallelonga, Paola Formenti, Claudia Di Biagio, Mathieu Cazanau, Edouard Pangui, Jean-François Doussin, Nadine Mattielli

Publikováno v: Communications Earth & Environment, Vol 3, Iss 1, Pp 1-12 (2022)

Southern Africa represents a non-negligible source of dust to the high latitude environments of the Southern Hemisphere during warm periods, according to geochemical and isotopic data from the Namibian coast

Externí odkaz: https://doaj.org/article/37cd0421db514473ab478e889bc7f336

Antarctic ozone hole modifies iodine geochemistry on the Antarctic Plateau

Autor: Andrea Spolaor, François Burgay, Rafael P. Fernandez, Clara Turetta, Carlos A. Cuevas, Kitae Kim, Douglas E. Kinnison, Jean-François Lamarque, Fabrizio de Blasi, Elena Barbaro, Juan Pablo Corella, Paul Vallelonga, Massimo Frezzotti, Carlo Barbante, Alfonso Saiz-Lopez

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)

The Antarctic ozone hole has had far-reaching impacts, but effects on geochemical cycles in polar regions is still unknown. Iodine records from the interior of Antarctica provide evidence for human alteration of the natural geochemical cycle of this

Externí odkaz: https://doaj.org/article/65a26512770740be971b200f6f142fd8

Lead Isotopic Constraints on the Provenance of Antarctic Dust and Atmospheric Circulation Patterns Prior to the Mid-Brunhes Event (~430 kyr ago)

Autor: Changhee Han, Laurie J. Burn, Paul Vallelonga, Soon Do Hur, Claude F. Boutron, Yeongcheol Han, Sanghee Lee, Ahhyung Lee, Sungmin Hong

Publikováno v: Molecules, Vol 27, Iss 13, p 4208 (2022)

A lead (Pb) isotopic record, covering the two oldest glacial–interglacial cycles (~572 to 801 kyr ago) characterized by lukewarm interglacials in the European Project for Ice Coring in Antarctica Dome C ice core, provides evidence for dust provenan

Externí odkaz: https://doaj.org/article/4df2da6492c94161a0597071b4e320a6

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