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ICESat / GLAS Data

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

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Product Format and Definition Changes with Release-26


Changes, including new parameters, for products GLA05 - GLA09 and GLA12 - GLA15 are summarized below. More information about product formats is available on the NASA Wallops Flight Facility's Web site at Version 5.2 GLAS Files.

GLA05

  • Added i_numIters i1b (40)
  • Changed i_spare6 i1b (110) to i_spare6 i1b (70)

GLA06

  • i_satCorrFlg, changed description and the PDF (byte description) file to reflect added descriptions
  • i_DEM_hires_src & i_DEM_hires_elv, updated description and PDF (byte description) file
  • i_DEM_elv, changed description
  • i_satNrgCorr, changed units to 0.1fJ, Scale to 1.0d-17
  • i_satPwdCorr, changed units to 0.01ns, scale to .01
  • i_msRngCorr, added description
  • i_msCorrFlg, added description

GLA08

  • Added new variables i_PBL_Layer_ht i2b (4), i_Spec_Humid i2b (4), i_Temp2mAbvGrnd i2b (4), i_Total_CloudCov i2b (4)
  • Changed i_spare2 i1b (264) to i_spare2 i1b (232)
  • Changed i_Solar_Angle to i_SolarAngle
  • i_Surface_wind changed description
  • i_Surface_wdir changed description
  • i_Spec_Humid changed description
  • i_LayHgt_Flag - PDF (byte description) description changed

GLA09

  • i_LRCL_Flag & i_MRCL_Flag, changed description in the PDF (byte description) files
  • i_FRcld_grd & i_HRcld_grd & i_MRcld_grd & i_LRcld_grd, changed minimum to -127 and changed description
  • Added new variables i_PBL_Layer_ht i2b (4), i_Spec_Humid i2b (4), i_Temp2mAbvGrnd i2b (4), i_Total_CloudCov i2b (4)
  • Changed i_spare4 i1b (590) to i_spare4 i1b (558)
  • Changed i_Solar_Angle to i_SolarAngle
  • i_Surface_wind changed description
  • i_Surface_wdir changed description
  • i_Spec_Humid changed description
  • i_FRcld_bot, i_FRcld_top descriptions changed

GLA12

  • i_satCorrFlg, changed description and the PDF (byte description) file to reflect added descriptions
  • i_DEM_hires_src & i_DEM_hires_elv, updated description and PDF (byte description) file
  • i_DEM_elv, changed description
  • i_satNrgCorr, changed units to 0.1fJ, scale to 1.0d-17
  • i_satPwdCorr, changed units to 0.01ns, scale to 0.01
  • i_msRngCorr, added description
  • i_msCorrFlg, added description

GLA13

  • i_satCorrFlg, changed description and the PDF (byte description) file to reflect added descriptions
  • i_DEM_hires_src & i_DEM_hires_elv, updated description and PDF (byte description) file
  • i_DEM_elv, changed description
  • i_satNrgCorr, changed units to 0.1fJ, scale to 1.0d-17
  • i_satPwdCorr, changed units to 0.01ns, scale to 0.01
  • i_msRngCorr, added description
  • i_msCorrFlg, added description

GLA14

  • i_satCorrFlg, changed description and the PDF (byte description) file to reflect added descriptions
  • i_DEM_hires_src & i_DEM_hires_elv, updated description and PDF (byte description) file
  • i_DEM_elv, changed description
  • i_satNrgCorr, changed units to 0.1fJ, scale to 1.0d-17
  • i_satPwdCorr, changed units to 0.01ns, scale to 0.01
  • i_msRngCorr, added description
  • i_msCorrFlg, added description

GLA15

  • i_satCorrFlg, changed description and the PDF (byte description) file to reflect added descriptions
  • i_DEM_elv, changed description
  • i_satNrgCorr, changed units to 0.1fJ, scale to 1.0d-17
  • i_satPwdCorr, changed units to 0.01ns, scale to 0.01
  • i_msRngCorr, added description
  • i_msCorrFlg, added description