The libraries solve the problem of decoding large GRIB and BUFR datasets that can expand 10 to 50 times in size and the raw data file size could be 500 megabytes. In the extreme case, the resulting decoded dataset would be 25 gigabytes if the libraries were not used.
Another benefit of using the libraries, a table of contents of the dataset parameters are known before the file is opened for data extraction.
The libraries provide quick data access with minimal overhead to the data extraction process. Sounds to good to be true, stop by my poster session to get the inside scoop on fast GRIB and BUFR data access.