Please use this identifier to cite or link to this item:
Authors: Tedesco, L.* 
Vichi, M.* 
Haapala, J.* 
Stipa, T.* 
Title: A dynamic Biologically-Active Layer for numerical studies of the sea ice ecosystem.
Issue Date: 2010
Series/Report no.: /35(2010)
DOI: 10.1016/j.ocemod.2010.06.008
Keywords: sea ice
ecosystem modelling
Subject Classification02. Cryosphere::02.01. Permafrost::02.01.02. Cryobiology 
02. Cryosphere::02.02. Glaciers::02.02.07. Ocean/ice interaction 
03. Hydrosphere::03.01. General::03.01.07. Physical and biogeochemical interactions 
03. Hydrosphere::03.04. Chemical and biological::03.04.01. Biogeochemical cycles 
03. Hydrosphere::03.04. Chemical and biological::03.04.04. Ecosystems 
Abstract: This work introduces a novel approach for the modelling and coupling of sea ice biology to sea ice physics. The central concept of the coupling is the definition of the Biologically Active Layer, which is the time-varying fraction of sea ice that is connected to the ocean via brine pockets and channels, and acts as a rich habitat for many microorganisms. A simple but comprehensive physical model of the sea ice thermohalodynamics is coupled to a novel sea ice microalgal model of growth in the framework of the Biogeochemical Flux Model. The physical model provides the key physical properties of the Biologically Active Layer and the biological model simulates the physiological and ecological response of the algal community to the physical environment. Numerical simulations of chl-a were compared with observations at two different ice stations, in the Baltic and off the coast of Greenland, showing that this new coupling structure is sufficiently generic to represent well the temporal and spatial distribution of sea ice algae during the whole ice season at both sites. This model implementation and coupling structure is viable as a new component of General Circulation Models, allowing for estimates of the role and importance of sea ice biology in the local and global carbon cycle.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
tedesco10.pdfdocument1.39 MBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 16, 2018


checked on Aug 16, 2018

Google ScholarTM