The distribution of reduced sulphur compounds in polar environments : insights from observations and climatologies ...

• Main Author: Jarníková, Tereza
• Format: Text
• Language: English
• Published: University of British Columbia 2016
• Subjects: Arctic; Arctic Ocean; Phytoplankton; Southern Ocean
• Online Access: https://dx.doi.org/10.14288/1.0300344; https://doi.library.ubc.ca/10.14288/1.0300344

Dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) are key components in the marine reduced sulphur cycle, where they play several roles in the ecology of bacteria and phytoplankton. Upon emission to the atmosphere, DMS plays a role in atmospheric sulphur budgets and radiative balance, having potentially climate-cooling effects. This thesis aims to provide insight into the distribution of these compounds in polar marine waters. This is done by constructing a revised climatology of DMS budgets in the Southern Ocean and by presenting new DMS/P data in the Arctic Ocean. Chapter 2 presents a revised summertime climatology of DMS distributions and fluxes in the Southern Ocean, based on the inclusion of a significant number of high-resolution measurements (~700 000) made in recent years. Based on the climatology written by Lana et al in 2011, the revised climatology shows notable differences in DMS budgets. In particular, we find increased DMS concentrations and sea–air fluxes south of the Polar Frontal ...