Arctic Carbon Dynamics

As part of a UAF effort and with funding from the Alaska Ocean Observing System and the North Pacific Research Board, Seth Danielson, Andrew McDonnell, Peter Winsor, Russell Hopcroft and myself have initiated a long-term ecosystem mooring in the northeastern Chukchi Sea. The mooring was deployed for the first time in summer 2014. The observatory records the partial pressure of CO2, pH, nitrate, water current speed and direction, ice draft, wave height, wave period, wave direction, size spectra of suspended sediment, temperature, salinity, conductivity, pressure, fluorescence, light, and passive and active acoustics throughout the year, including the under-sampled and poorly understood seasons when strong storms or sea ice typically prevents ship-based sampling. The mooring was placed in a “biological hotspot” and in close proximity to Barrow Canyon, which will help us to get a better understanding of the interdisciplinary controls of the Arctic biogeochemical pump.

Th Chukchi and Beaufort Sea Regional Biogeochemical Model

I am also developing a regional biogeochemical model for the Chukchi and Beaufort Seas. This NSF funded project will allow us conduct hindcast simulations that will be used to improve the conceptual understanding of the controlling forces that mediate ocean acidification and carbon fluxes in the Chukchi Sea and in the Arctic Ocean year-round.

Take a look at doi:10.1002/2013GL058267 to learn more about CO2-system dynamics in the Chukchi Sea.

Mooring ready for the test deployment in Seward
Mooring ready for the test deployment in Seward.
Testing the instruments during the deployment in Seward
Testing the instruments during the deployment in Seward.
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Deployment of the mooring in the Chukchi Sea, Fall 2014.

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