Ice brine chlorophyll-a concentrations from ice core holes 
            Southern Ocean, GLOBEC 
   C. Fritsen, Desert Research Institute 
   RVIB Nathaniel B. Palmer cruise NMP02-04, July-Sept 2002 
            * chla = chlorophyll-a, micrograms per liter (ug/l) 
            * lat = latitude reported in decimal degrees south 
            * lon = longitude reportred in decimal degrees west 
            * bot_depth  =  depth to bottom of ice core hole in meters 
   See documentation for notes about these data. 
   Corrections have been applied to the data per Fritsen's e-mail of 12/03/03.