Reprocessed NASA ICESat/GLAS GLAH01 HDF5 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). GLAH01 reprocessing was conducted to correct the format of the d_4nsBgMean parameter changing it from counts to volts.
See the ICESat/GLAS data collection for more information.
DOI:10.5067/ICESAT/GLAS/DATA101.