Recent studies suggest that around 5% of global dust emissions come from sources in the highlatitudes (≥50°N and ≥40°S). A substantial proportion of this dust remains within the high latitudes and is deposited in marine and terrestrial environments. Stable air masses and limited atmospheric convection associated with cold climates reduce vertical mixing of dust plumes and can restrict the altitudes at which the deposition of dust originating from high latitudes can take place. Within local high-latitude systems, dust transport pathways facilitate links between different landscape components contributing nutrients and sediments. Dust deposition to the polar areas may also be a critical source of sediments and nutrients that trigger and maintain phytoplankton blooms.
History
School
Social Sciences
Department
Geography and Environment
Published in
Journal of Geophysical Research: Atmospheres
Citation
BULLARD, J.E., 2017. The distribution and biogeochemical importance of high-latitude dust in the Arctic and Southern Ocean-Antarctic regions. Journal of Geophysical Research: Atmospheres, 122 (5), pp. 3098–3103.
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
Acceptance date
2017-02-16
Publication date
2017
Notes
An edited version of this paper was published by AGU. Copyright (2017) American Geophysical Union. Further reproduction or electronic distribution is not permitted.