Tracing ocean pathways : modelling manganese and lead in the Canadian Arctic ...
Human-induced climate change is rapidly altering the Arctic sea ice regime, ocean dynamics, and freshwater cycle. These changes impact biogeochemical cycling, including the cycling of trace elements, but the exact manifestations remain unclear. Over the past decade, the international GEOTRACES progr...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2023
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| Online Access: | https://dx.doi.org/10.14288/1.0434175 https://doi.library.ubc.ca/10.14288/1.0434175 |
| Summary: | Human-induced climate change is rapidly altering the Arctic sea ice regime, ocean dynamics, and freshwater cycle. These changes impact biogeochemical cycling, including the cycling of trace elements, but the exact manifestations remain unclear. Over the past decade, the international GEOTRACES program has greatly expanded the coverage of trace element observations in the Arctic Ocean, capturing the current state of the system. These observations, in conjunction with improvements in model representations, allow the development of trace element models to investigate drivers of the spatial distribution and seasonal variability of trace element concentrations, and to estimate sensitivity of trace element cycling to climate change. This dissertation describes some of the first three-dimensional models of the dissolved micronutrient manganese (Mn) and pollutant lead (Pb) in the Canadian Arctic Ocean, including the Canada Basin, the Canadian Arctic Archipelago (CAA), and Baffin Bay. I highlight sources that control ... |
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