NetCDF (network Common Data Form) is an interface for array-oriented data access and a library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data.
NetCDF2CSV is a tool for exporting subsets of multidimensional NetCDF files to multiple Excel-compatible CSV files. The tool is written in Java and licensed under the GPL: http://www.wikisquare.de/netcdf2csv