Hi,<br><br> The standard method of handling grib2 files is to use g2ctl to make the control<br>files and to use gribmap to make the index files. Now there is an alternative,<br>alt_g2ctl and alt_gmp. The goals of the alt code were to handle grib2 in a<br>
more flexible manner and to better suited for really big grib2 data sets (gribmap<br>has multiprocessing, and an update mode). Details are here<br><br><a href="http://www.cpc.ncep.noaa.gov/products/wesley/alt_g2ctl_gmp.html">http://www.cpc.ncep.noaa.gov/products/wesley/alt_g2ctl_gmp.html</a><br>
<br> Wesley Ebisuzaki<br><br><br>