OASIS-CANADA-OOTI ASCOS: Atmospheric composition measured from the Oden Ice Breaker

• Main Authors: Bottenheim, Jan, Netcheva, Stoyka, Chang, R. Y-W.
• Format: Dataset
• Language: English
• Published: Canadian Cryospheric Information Network 2012
• Subjects: Arctic; Arctic Ocean; Atmosphere; Bromine oxide; Ice; Mercury fluxes; Ozone; International Polar Year-Ocean Atmosphere Sea-Ice and Snow Interactions in Polar Regions; Svalbard; Fairbanks; Canada; Breaker; Central Arctic; International Polar Year; oden; Sea ice; Alaska
• Online Access: https://dx.doi.org/10.5443/1837; https://www.polardata.ca/pdcsearch/?doi_id=1837

Data were compiled in campaign mode and were obtained over the ice of the central Arctic Ocean north of Svalbard, using the OOTI (Out On The Ice) light mobile laboratory powered by a bank of 12 VDC batteries. Chemical variables were collected with instrumentation detailed below. Mercury (Hg): Gardis (atomic absorption spectroscopy) instrumentation displayed strong dependence of the cell desorption with battery voltage, thus data are not archived. Bromine monoxide (BrO): Data were collected by a hybrid MAXDOAS (multi-axis differential optical absorption spectrometer) which was built by the University of Heidelberg and Hoffmann Messtechnik GmbH with an integrated scan head designed by the University of Alaska Fairbanks. Bromine monoxide and oxygen dimer data were taken at variable temporal resolution depending on ambient light intensity and are all included in one file for the entire campaign. Surface Ozone (O3): 5 minutes averages are taken with 2B technology ozone monitor and all data have been archived in one combined data file. A record of GPS location of the measurements at one minute resolution is archived in one data file. Existing gaps in the data are due to poor ice conditions not permitting deployment over the ice, instrumentation maintenance or power interruption. This study was part of the FPO OASIS-CANADA program and ASCOS, Arctic Summer Cloud Ocean Study. : Purpose: Collecting information on atmospheric constituents for furthering understanding of atmospheric processes that control and affect the air composition, with focus on summer time Arctic surface ozone, elemental gaseous mercury and bromine monoxide. Data were collected as part of the ASCOS study 2008 over the ice in close proximity to the Oden icebreaker. : Summary: Data were compiled in campaign mode on the ice using the OOTI (Out On The Ice) light laboratory, consisting of instruments recording surface ozone, gaseous elemental Hg and BrO. The instrumentation was powered by a bank of 12 VDC batteries, and manually transported on the ice to a location close to open water. Ozone data collected were similar to those collected from coastal based stations for this season. BrO was detected only at concentrations close to the instrumental detection limit during two episodes.