The role of open lead interactions in atmospheric ozone variability between Arctic coastal and inland sites

Bibliographic Data

ID19568443
AuthorsPeter K Peterson (0000-0002-9337-6677, University of Michigan), Kerri A Pratt (0000-0003-4707-2290, University of Michigan), William R Simpson (0000-0002-8596-7290, University of Alaska Fairbanks), S V Nghiem (0000-0002-4592-2979, Jet Propulsion Laboratory), Lemuel X Pérez Pérez (Purdue University West Lafayette), Eric J Boone, Eric Boone (University of Michigan), Denis Pöhler (0000-0003-0179-5194, Heidelberg University), Johannes Zielcke (0000-0002-6051-6813, Heidelberg University), Stephan General (Heidelberg University), P B Shepson (0000-0002-1726-3291, Purdue University West Lafayette), Udo Frieß (0000-0001-7176-7936, Heidelberg University), Ulrich Platt, Brian H Stirm (Purdue University West Lafayette)
EditorsDetlev Helmig (0000-0003-1612-1651), Joël Savarino
Year2016
Volume4
Publication date2016-01-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueElementa Science of the Anthropocene (JOURNAL)
Journal identifiersISSN: 2325-1026 • E-ISSN: 2325-1026
PublisherUniversity of California Press (PUBLISHER • US)
DOI10.12952/journal.elementa.000109
OpenAlexW2394987261
LanguageEN
Citations received1
References cited36

Boundary layer atmospheric ozone depletion events (ODEs) are commonly observed across polar sea ice regions following polar sunrise. During March-April 2005 in Alaska, the coastal site of Barrow and inland site of Atqasuk experienced ODEs (O3< 10 nmol mol-1) concurrently for 31% of the observations, consistent with large spatial scale ozone depletion. However, 7% of the time ODEs were exclusively observed inland at Atqasuk. This phenomenon also occurred during one of nine flights during the BRomine, Ozone, and Mercury EXperiment (BROMEX), when atmospheric vertical profiles at both sites showed near-surface ozone depletion only at Atqasuk on 28 March 2012. Concurrent in-flight BrO measurements made using nadir scanning differential optical absorption spectroscopy (DOAS) showed the differences in ozone vertical profiles at these two sites could not be attributed to differences in locally occurring halogen chemistry. During both studies, backward air mass trajectories showed that the Barrow air masses observed had interacted with open sea ice leads, causing increased vertical mixing and recovery of ozone at Barrow and not Atqasuk, where the air masses only interacted with tundra and consolidated sea ice. These observations suggest that, while it is typical for coastal and inland sites to have similar ozone conditions, open leads may cause heterogeneity in the chemical composition of the springtime Arctic boundary layer over coastal and inland areas adjacent to sea ice regions

Air mass (solar energy) · Arctic · Atmospheric sciences · Boundary layer · Climatology · Differential optical absorption spectroscopy · Geography · Meteorology · Ozone · Ozone Depletion · Planetary boundary layer · Sea ice · Sunrise · Sunset · Tundra · Atmospheric and Environmental Gas Dynamics · Atmospheric chemistry and aerosols · Atmospheric Ozone and Climate · Environmental Science · Geology · Oceanography

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