Impact of eddy–wind interaction on eddy demographics and phytoplankton community structure in a model of the North Atlantic Ocean
Anderson, Laurence A.
McGillicuddy, Dennis J.
Maltrud, Mathew E.
Lima, Ivan D.
Doney, Scott C.
MetadataShow full item record
KeywordMesoscale eddies; Phytoplankton; Community composition; Air-sea interaction; Wind stress; Ekman pumping; 25-30 °N 58-68 °W
Two eddy-resolving (0.1-degree) physical-biological simulations of the North Atlantic Ocean are compared, one with the surface momentum flux computed only from wind velocities and the other using the difference between air and ocean velocity vectors. This difference in forcing has a significant impact on the intensities and relative number of different types of mesoscale eddies in the Sargasso Sea. Eddy/wind interaction significantly reduces eddy intensities and increases the number of mode-water eddies and “thinnies” relative to regular cyclones and anticyclones; it also modifies upward isopycnal displacements at the base of the euphotic zone, increasing them in the centers of mode water eddies and at the edges of cyclones, and decreasing them in the centers of cyclones. These physical changes increase phytoplankton growth rates and biomass in mode-water eddies, bringing the biological simulation into better agreement with field data. These results indicate the importance of including the eddy/wind interaction in simulations of the physics and biology of eddies in the subtropical North Atlantic. However, eddy intensities in the simulation with eddy/wind interaction are lower than observed, which suggests a decrease in horizontal viscosity or an increase in horizontal grid resolution will be necessary to regain the observed level of eddy activity.
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Dynamics of Atmospheres and Oceans 52 (2011): 80-94, doi:10.1016/j.dynatmoce.2011.01.003.
Suggested CitationPreprint: Anderson, Laurence A., McGillicuddy, Dennis J., Maltrud, Mathew E., Lima, Ivan D., Doney, Scott C., "Impact of eddy–wind interaction on eddy demographics and phytoplankton community structure in a model of the North Atlantic Ocean", 2010-12, https://doi.org/10.1016/j.dynatmoce.2011.01.003, https://hdl.handle.net/1912/4901
Showing items related by title, author, creator and subject.
Seasonal shifts in bacterial community responses to phytoplankton-derived dissolved organic matter in the Western Antarctic Peninsula Luria, Catherine M.; Amaral-Zettler, Linda A.; Ducklow, Hugh W.; Repeta, Daniel J.; Rhyne, Andrew; Rich, Jeremy (Frontiers Media, 2017-11-03)Bacterial consumption of dissolved organic matter (DOM) drives much of the movement of carbon through the oceanic food web and the global carbon cycle. Understanding complex interactions between bacteria and marine DOM ...
North-South asymmetry in the modeled phytoplankton community response to climate change over the 21st century Marinov, Irina; Doney, Scott C.; Lima, Ivan D.; Lindsay, Keith; Moore, J. Keith; Mahowald, Natalie M. (John Wiley & Sons, 2013-12-20)Here we analyze the impact of projected climate change on plankton ecology in all major ocean biomes over the 21st century, using a multidecade (1880–2090) experiment conducted with the Community Climate System Model ...
McMahon, Kelton W.; Ambrose, William G.; Johnson, Beverly J.; Sun, Ming-Yi; Lopez, Glenn R.; Clough, Lisa M.; Carroll, Michael L. (Inter-Research, 2006-04-03)We assessed the digestibility and utilization of ice algae and phytoplankton by the shallow, subtidal benthos in Ny Ålesund (Kongsfjord) on Svalbard (79°N, 12°E) using chlorophyll a (chl a), essential fatty acids (EFAs) ...