Shipborne dissolved concentrations of benzene and toluene in surface seawater and depth profiles and air sea fluxes in Canadian Arctic/Baffin Bay area, 2017 ...
Dissolved concentrations of these gases were measured using a segmented flow coil equilibrator (SFCE) coupled to a Proton Transfer Reaction Mass Spectrometer (PTR-MS). Detailed description of the installation on board and the data analysis specific to this deployment can be found in the data citatio...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | English |
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Canadian Cryospheric Information Network
2022
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.21963/13271 https://www.polardata.ca/pdcsearch?doi_id=13271 |
| Summary: | Dissolved concentrations of these gases were measured using a segmented flow coil equilibrator (SFCE) coupled to a Proton Transfer Reaction Mass Spectrometer (PTR-MS). Detailed description of the installation on board and the data analysis specific to this deployment can be found in the data citation. Briefly, the SFCE-PTR-MS was set up in one of the labs near the front of the ship and used to sample either discrete samples from depth profiles or underway seawater from the main seawater inlet of the ship. Sampling occurs on leg 2b of 2017 Amundsen science cruise from 17 July until 8 August. The research vessel travelled from Iqaluit northwards through Davis Strait and Baffin Bay to reach Smith Sound. In this area, more intense depth profile sampling was carried out. The vessel then travelled to Pond Inlet and Resolute. Sampling ended south of Resolute in Peel Sound. Depth profiles of dissolved gas concentrations were measured from the Rosette-mounted Niskin bottles as discrete samples from the near surface ... : Dissolved benzene and toluene were measured in surface seawater and depth profiles of the Canadian Arctic. The aim was twofold; first we wanted to establish a baseline of the dissolved concentrations before anthropogenic activity will increase in the Arctic as a consequence of climate change and decrease in sea ice extend, second we wanted to use these measured concentrations to assess whether the surface ocean absorbs or emits these gases (air-sea fluxes). The air sea fluxes are later used to assess their effect on secondary organic aerosol formation during Arctic summer. To our knowledge, these represent the first measurements of benzene and toluene in seawater in the Canadian Arctic and in sea ice covered waters. ... |
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