Characterizing Atmospheric Transport Pathways to Antarctica and the Remote Southern Ocean Using Radon-222

• Published in: Frontiers in Earth Science
• Main Authors: Chambers, Scott, D, Preunkert, Susanne, Weller, Rolf, Hong, Sang-Bum, Humphries, Ruhi, S, Tositti, Laura, Angot, Hélène, Legrand, Michel, Williams, Alastair, G, Griffiths, Alan, D, Crawford, Jagoda, Simmons, Jack, Choi, Taejin, J, Krummel, Paul, B, Molloy, Suzie, Loh, Zoë, Galbally, Ian, Wilson, Stephen, Magand, Olivier, Sprovieri, Francesca, Pirrone, Nicola, Dommergue, Aurélien
• Other Authors: Institut des Géosciences de l’Environnement (IGE), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2018
• Subjects: radon Southern Ocean Antarctica atmospheric transport MBL troposphere ozone mercury; radon; Southern Ocean; Antarctica; atmospheric transport; MBL; troposphere; ozone; mercury; [SDE]Environmental Sciences; Antarctic; The Antarctic; Antarc*; Ice Sheet
• Online Access: https://hal.science/hal-04349815; https://hal.science/hal-04349815/document; https://hal.science/hal-04349815/file/Chambers-2018-Characterizing%20Atmospheric%20Trans.pdf; https://doi.org/10.3389/feart.2018.00190

International audience Chambers et al. Atmospheric Transport Pathways to Antarctica elemental mercury. These differences were largely attributed to chemical processes on the Antarctic Plateau. A comparison of our observations with some Antarctic radon simulations by global climate models over the past two decades indicated that: (i) some models overestimate synoptic transport to Antarctica in the MBL, (ii) the seasonality of the Antarctic ice sheet needs to be better represented in models, (iii) coastal Antarctic radon sources need to be taken into account, and (iv) the underestimation of radon in subsiding tropospheric air needs to be investigated.