Aerosol Concentrations in Relationship to Local Atmospheric Conditions on James Ross Island, Antarctica

• Published in: Frontiers in Earth Science
• Main Authors: Kavan, Jan, Dagsson-Waldhauserova, Pavla, Renard, Jean-Baptiste, Láska, Kamil, Ambrožová, Klára
• Other Authors: Faculty of Science Brno (SCI / MUNI), Masaryk University Brno (MUNI), University of Iceland Reykjavik, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES), ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2018
• Subjects: Aerosol; Antarctica; surface wind; high latitude dust sources; atmospheric conditions; Antarctic Peninsula; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph]; Antarc*; Antarctic; James Ross Island; Ross Island; Seymour Island; Vega Island
• Online Access: https://insu.hal.science/insu-01978658; https://insu.hal.science/insu-01978658/document; https://insu.hal.science/insu-01978658/file/feart-06-00207.pdf; https://doi.org/10.3389/feart.2018.00207

International audience Several important ice-free areas (e.g., Seymour Island, Cape Lamb on Vega Island, Terrapin Hill) are located in the Eastern Antarctic Peninsula region. The largest of these ice-free areas can be found on the Ulu Peninsula, James Ross Island, where this study was undertaken. The Ulu Peninsula covers an area of 312 km2, and has been found to be an important active High Latitude Dust source. In this study, aerosol concentrations and local wind properties are described together with their linkages and typical synoptic situations. The highest aerosol concentrations of 57 μg m-3 for PM10 were detected during high wind speed events that exceeded 10 m s-1, which is also a threshold level for activating local mineral material sources. Surface deposition of dust particles can have significant environmental impacts such as changes in properties of atmosphere or enhanced snow melting.