Yea, the SGS data is what I need (I meant to specify that in my last message). I'm using the data to analyze changes in ice concentrations of the Northern Polar Ice Cap on a yearly basis. The problem is getting the data into ENVI (I have tried opening it directly in ENVI, but as expected this did not work).
The best approach I can think of is to use the java source code to parse the data, somehow put that into a text file, and then use IDL to feed the data into ENVI (once I figure out the storage format- I'm familiar with the BSQ, BIL, and BIP storage formats). The problem is I'm not familiar with IDL so I'm either searching for a better way or help with this process.
Other approaches: I've attempted to open the file in different programs (ENVI, ArcGIS, Image Viewers) and I've looked for file converters and I've attempted to use IDL with my limited programing knowledge, but the most I could accomplish was viewing the data in NASAview and Windows (command prompt).
If you want a specific file so that we're on the same page, let's just use a file that is quick to get to and I'll pull up the files I actually need later. sgs_01_015_030_00.dat (http://pds-geosciences.wustl.edu/ody/ody-m-grs-5-sgs-v1/odgs1_xxxx/yr01/yr01_ls015_030/)