Biogeochemical modeling with PISCES

REVIEW of other people's work!   

 

Regional model (Mediterranean sea)

http://www.nemo-ocean.eu/content/download/24943/111257/version/1/file/Dutay_NEMO_User_2012.pdf

• 2012
• 1/12 degree
• Spectral nudging
• Optimization of 14 parameters with YAO software (1-D data assimilation at 1 station)

 Global model

http://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&ved=0CDEQFjAB&url=http%3A%2F%2Fwww.nemo-ocean.eu%2Fcontent%2Fdownload%2F7567%2F41030%2Ffile%2FC_Moulin.pdf&ei=9LDBUcTnCYvH0AGC3ICgDQ&usg=AFQjCNHJ5lUel1LU8eHPfNi0u8rNUXhg9w&sig2=LSK67Wfl0roL5n-0gyjhXQ&bvm=bv.47883778,d.dmQ

• 2009
• Initial step: Optimization of 6 parameters (growing, mortality, grazing) with YAO (1-D at 1 station)
• Clear improvement at the considered station, but not for other locations: Parameters are specific to the station or at least to the local biogeochemical conditions.
• Increase optimized parameters from 6 to 45 and optimize at not only 1 but at 5 stations.
• Limit the optimized range.
•  The improvement from the standard set of parameters is significant for surface Chl, without modifying the ocean dynamics.
• Extended and published work with 45 parameter optimization at 5 stations 
• http://onlinelibrary.wiley.com/doi/10.1029/2009JC006005/abstract
•  Out of 60 parameters, 15 were set to standard values as they were considered insensitive (<1% variation).
• The remaining 45 parameters were assimilated for 15 different observational profiles at 5 locations.
• Based on the above procedure, decide the final set of 45 optimized parameters for 3-D run, and compare its results with the run with the standard set of parameters.
• Validation with vertical profiles at 5 stations and surface chlorophyll.