OASIS-CANADA-OOTI COBRA: Atmospheric composition and structure during the COBRA campaign near Kuujjuarapik/Whapmagoostui, Québec

• Main Authors: Bottenheim, Jan, Netcheva, Stoyka, Staebler, Ralf, Steffen, Alexandra
• Format: Dataset
• Language: English
• Published: Canadian Cryospheric Information Network 2016
• Subjects: Atmospheric composition; Bromine oxide; Hudson Bay; Ice; Mercury fluxes; Meteorology; Ozone; Photochemistry; Webcam; Winds; International Polar Year-Ocean Atmosphere Sea-Ice and Snow Interactions in Polar Regions; Arctic; Fairbanks; Canada; Hudson; Kuujjuarapik; Whapmagoostui; International Polar Year; Sea ice; Alaska
• Online Access: https://dx.doi.org/10.5443/1841; https://www.polardata.ca/pdcsearch/?doi_id=1841

Data were compiled in campaign mode and obtained over the ice of the frozen Hudson Bay near Kuujjuarapik/Whapmagoostui, Québec using the OOTI (Out On The Ice) mobile laboratory mounted on a specially manufactured Arctic sled and running on a bank of 12 VDC batteries. Chemical and meteorological variables were collected with state of the art instrumentation, as detailed below. Position: records of location were taken on each new site by hand-held Garmin GPS receiver and included in each data file. Bromine monoxide (BrO): Measurements were taken by an hybrid MAXDOAS (multi-axis differential optical absorption) instrument built by the University of Heidelberg, Hoffmann Messtechnik GmbH with an integrated scanning head built by University of Alaska Fairbanks. Bromine monoxide and oxygen dimer data were taken at variable temporal resolution depending on light intensity are included in one file for the entire campaign with corresponding GPS locations. Ozone (O3): one-minute averages are taken with 2B Technology ozone monitors at 2 heights and merged with meteorological variables and GPS location in combined daily data files. Wind, temperature, pressure, relative humidity, and radiation meteorological variables: Campbell Scientific data logger and instrumentation were used to collect data which were archived at one-minute intervals. Environmental survey (photos): Logitech webcam taking snap shots at five-minute intervals are archived. Existing gaps in the data are due to instrumentation maintenance or power interruption. : Purpose: To obtain atmospheric composition data for furthering understanding of atmospheric processes, particularly with reference to surface ozone and mercury depletion. This campaign was part of the COBRA project (COmbined iodine and Bromine Release on the Arctic atmosphere, PI Dr. L. Carpenter, U. York, UK). : Summary: Data were compiled in campaign mode, obtained over the frozen Hudson Bay, near Kuujjuarapik/Whapmagoostui, Québec, using the OOTI (Out On The Ice) laboratory mounted on a specially manufactured Arctic sled and running on a bank of 12 VDC batteries. Few episodes of depleted ozone and elevated bromine monoxide were recorded during the field campaign.