Close

Service Interruption

The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.

NASA Distributed Active Archive Center (DAAC) at NSIDC

ICESat / GLAS Data

Ice, Cloud, and land Elevation / Geoscience Laser Altimeter System

DAAC Home

Product Format and Definition Changes with Release-31


Changes are summarized below. More information about product formats is available on the NASA Wallops Flight Facility's Web site at Version 5.6 GLAS Files.


GLA06

  • Added pole tide (i_polTide)
  • Changed i_msRngCorr and i_msCorrFlg to spares
  • Changed description on i_cntRngOff
  • Updated documentation for i_DEM_hires_elv to reflect change to ICESat DEM

GLA09

  • Added a computed value (previously unfilled) for i_FRg_grd_sig

GLA12

  • Added pole tide (i_polTide)
  • Changed i_msRngCorr and i_msCorrFlg to spares
  • Changed description on i_cntRngOff
  • Updated documentation for i_DEM_hires_elv to reflect change to ICESat DEM

GLA13

  • Added pole tide (i_polTide)
  • Changed i_msRngCorr and i_msCorrFlg to spares
  • Changed description on i_cntRngOff
  • Updated documentation for i_DEM_hires_elv to reflect change to ICESat DEM

GLA14

  • Added pole tide (i_polTide)
  • Changed i_msRngCorr and i_msCorrFlg to spares
  • Changed description on i_cntRngOff
  • Updated documentation for i_DEM_hires_elv to reflect change to ICESat DEM
  • Corrected the calculation of i_garea on GLA14.

GLA15

  • Added pole tide (i_polTide)
  • Changed i_DEM_elv to i_MSS_elv
  • Changed i_msRngCorr and i_msCorrFlg to spares
  • Changed description on i_cntRngOff