There are three directories which correspond to the three different alkalinity test scenarios.  

"Low" is the low alkalinity scenario and contains the following files: 

alkalinity.monthly.avg.2009.nc - Monthly averaged output of total alkalinity 
alkalinity.seward.spring.2009.nc - total alkalinity output for 1 day corresponding to the spring sampling date for the Seward Line timeseries. 
alkalinity.seward.summer.2009.nc - same as previous but for the summer sampling date. 
arag.2009.mat - Monthly averaged output of aragonite saturation state. 
arag.seward.spring.2009.mat - Aragonite saturation state output for 1 day corresponding to the spring sampling date for the Seward Line timeseries. 
arag.seward.summer.2009.mat - Same as previous but for the summer sampling date. 
CO2_airsea.monthly.avg.2009.nc - Monthly averaged output of surface air-sea CO2flux.  Positive value indicates flux into ocean.
Grazing.monthly.avg.2009.nc - Monthly averaged output of "Grazing" which encompasses all phytoplankton losses associated with heterotrophic grazing. 
NO3.seward.spring.2009.nc - Nitrate output for 1 day corresponding to the spring sampling date for the Seward Line timeseries. 
pCO2.monthly.avg.2009.nc - Monthly averaged output of surface ocean pCO2. 
pCO2.seward.spring.2009.nc - Surface ocean pCO2 output for 1 day corresponding to the spring sampling date for the Seward Line timeseries.
pCO2.seward.summer.2009.nc - Same as previous but for the summer sampling date. 
P_Production.monthly.avg.2009.nc - Monthly averaged output of primary production which encompasses all gross photosyntheic production by phytoplankton.  
Respiration.monthly.avg.2009.nc - Monthly averaged output of "Respiration" which encompasses detrital remineralization. 
salt.monthly.avg.2009.nc - Monthly averaged output of salinity. 
salt.seward.spring.2009.nc - Salinity output for 1 day corresponding to the spring sampling date for the Seward Line timeseries.
salt.seward.summer.2009.nc - Same as previous but for the summer sampling date. 
sustr.svstr.monthly.avg.2009.nc - Monthly averaged output of surface U-wind stress (sustr) and surface V-wind stresss (svstr). 
temp.monthly.avg.2009.nc - Monthly averaged output of ocean temperature.
temp.seward.spring.2009.nc - Ocean temperature output for 1 day corresponding to the spring sampling date for the Seward Line timeseries. 
temp.seward.summer.2009.nc - Same as previous but for summer sampling date. 
TIC.monthly.avg.2009.nc - Monthly averaged output of total inorganic carbon.
TIC.seward.spring.2009.nc - Total inorganic carbon output for 1 day corresponding to the spring sampling date for the Seward Line timeseries.
TIC.seward.summer.2009.nc - Same as previous but for summer sampling date. 

"Intermediate" is the intermediate alkalinity scenario and contains the following file: 
alkalinity.monthly.avg.intermediate.2009.nc  - Monthly averaged output of total alkalinity for the intermediate scenario. 
arag.2009.mat - Monthly averaged output of aragonite saturation state for the intermediate scenario. 
CO2_airsea.monthly.avg.intermediate.2009.nc - Monthly averaged output of surface air-sea CO2flux for the intermediate scenario.  Positive value indicates flux into ocean.
pCO2.monthly.avg.intermediate.2009.nc - Monthly averaged output of surface ocean pCO2 for the intermediate scenario.  

"High" is the high alkalinity scenario and contains the following file: 
alkalinity.monthly.avg.high.2009.nc - Monthly averaged output of total alkalinity for the high scenario.   
arag.2009.mat - Monthly averaged output of aragonite saturation state. 
CO2_airsea.monthly.avg.high.2009.nc - Monthly averaged output of surface air-sea CO2flux for the high scenario.  Positive value indicates flux into ocean.
pCO2.monthly.avg.high.2009.nc - Monthly averaged output of surface ocean pCO2 for the high scenario.