Physical-biological Modeling of the Northwestern Atlantic shelf
FSU team in the NNA Collaboration
Eric P. Chassignet, Michael Stukel, Xiaobiao Xu, Christian Fender
NNA Lobster Network team meeting @ 10/12/2022
FSU research in the NNA Collaboration
To establish/understand the role of atmospheric forcing and freshwater fluxes on circulation pattern and nutrient fluxes into the northwestern Atlantic shelf region.
To determine how altered circulation, nutrients, and temperature modify plankton food web and provide model fields to the other groups in the NNA collaboration.
Data-assimilative coupled ocean-ice-biology HYCOM-NEMURO model configured with the existing 1/12°, 41-layer HYCOM reanalysis and analysis product GOFS3.1 (1994-2022) [Originally proposed to be 1/50°] [Physical model available now, biological model to be available in 2023]
Extend the model simulations to 2030 using 1/12° Atlantic HYCOM configuration and using the atmospheric forcing from downscaled CESM climate projections. [Originally proposed to be 1/50°] [Physical model to be available in 2023]
From physics to zooplankton
NEMURO Model – 2 phytoplankton, 3 zooplankton – coupled to HYCOM outputs
Physical: Northwest Atlantic at a crossroad
Schematics of time mean circulation in the North Atlantic highlighting the crossroad location of the Northwest Atlantic (from García-Ibáñez et al. 2015).
On-going dramatic change
Schematic of the circulation in the Northwest Atlantic and rapid temperature increase from 2001-2007 to 2009-2018 (Gonçalves Neto et al., 2021)
First EOF mode (pattern and principal) of the upper ocean (0-200m) annual mean salinities since 1950 (Holliday et al., 2021).
Temperature
Temperature
Salinity