Auxiliary material for Paper 2010GB003892



The impact of the North Atlantic Oscillation on the uptake and accumulation of anthropogenic CO2 by North Atlantic Ocean mode waters


Naomi Marcil Levine
MIT-WHOI Joint Program, 
Woods Hole, Massachusetts, USA 

Now at Department of Organismic and Evolutionary Biology, Harvard University, 
Cambridge Massachusetts, USA


Scott C. Doney and Ivan Lima
Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, 
Woods Hole, Massachusetts, USA


Rik Wanninkhof
NOAA/AOML, 
Miami, Florida, USA


Nicholas R. Bates
Bermuda Institute of Ocean Sciences, 
St. George's, Bermuda


Richard A. Feely
NOAA/PMEL, 
Seattle, Washington, USA

Levine, N. M., S. C. Doney, I. Lima, R. Wanninkhof, N. R. Bates, and R. A. Feely (2011), The impact of the North Atlantic Oscillation on the uptake and accumulation of anthropogenic CO2 by North Atlantic Ocean mode waters, Global Biogeochem. Cycles, 25, GB3022, doi:10.1029/2010GB003892.


Introduction
The supplementary material includes four sections:  S1: Model-observation comparison, S2: Model Bias, S3: Subpolar Mode Water, and S4: Dominant Terms Controlling DIC.  
These four sections include additional information pertaining to the analysis presented in the main text.  Specifically, "Model-observation comparison" compares the 
vertical structure of hydrographic observations to model output. "Model Bias" describes the potential impact of inherent differences between the model simulations on 
the analysis.  "Subpolar Mode Water" describes the criteria used to select the subpolar mode water isopycnal band.  Finally, "Dominant Terms Controlling DIC" presents 
an analysis of the dominant terms controlling changes in DIC concentrations in the model.




2010gb003892-txts01.doc
	
Text containing four Auxiliary Material sections: S1: Model-observation comparison, S2: Model Bias, S3: Subpolar Mode Water, and S4: Dominant Terms Controlling DIC. 



2010gb003892-ts01.doc
       
Table S1: Monthly coefficient of variation for the subtropical and subpolar gyre carbon pools and water mass volumes.



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Figure S1: Comparison between hydrographic observations and model output of Canthro along the north-south A16 transect in the Atlantic Ocean.



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Figure S2: Comparison between hydrographic observations and model output along the north-south A16 transect in the Atlantic Ocean.

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Figure S3: Anthropogenic carbon inventory for the subtropical and subpolar gyres.



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Figure S4: Sensitivity of model isopycnal band anthropogenic carbon inventories to variable physics.



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Figure S5: Anthropogenic carbon inventory along subpolar mode water isopycnal bands. 



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Figure S6: Change in anthropogenic carbon accumulation rate along subpolar mode water isopycnal bands.



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Figure S7: Driving factors for changes in the subtropical gyre Ianthro.



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Figure S8: Driving factors for changes in model subpolar Ianthro.