ICESat-2 Derived 30 m Along-Track Boreal Aboveground Biomass Density, Version 1 (IS2ATBABD) 1 May 2019 - 30 September 2021 BIOMASS ICESat-2 Derived Canopy Height Model, Version 1 (IS2CHM) 1 January 2019 - 31 December 2021 VEGETATION HEIGHT ICESat-2 L4 Grounding Zone for Antarctic Ice Shelves, Version 1 (IS2GZANT) 30 March 2019 - 30 September 2020 GROUNDING LINE ICESat-2 Derived Sea Ice Melt Pond Characteristics from the Density-Dimension Algorithm, Version 3 (IS2MPDDA) 4 June 2020 - 28 August 2020 MELT POND ICESat-2 Calibration/Validation LVIS L1B Georeferenced Imagery, Version 1 (IS2OLVIS1BCV) 11 July 2022 - 26 July 2022 VISIBLE IMAGERY ICESat-2 Pre-Launch Simulated Multiple Altimeter Beam Experimental Lidar Advanced Topographic Laser Altimeter System (MATLAS) Data, Version 2 (IS2PLMATLAS) 24 February 2012 - 27 September 2012 SENSOR COUNTS ICESat-2 L4 Along-Track Sea Ice Thickness, Version 1 (IS2SITDAT4) 14 October 2018 - 1 May 2022 FREEBOARD | ICE DEPTH/THICKNESS | SNOW DEPTH ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 3 (IS2SITMOGR4) 1 November 2018 - 30 April 2024 ICE DEPTH/THICKNESS | SNOW DEPTH ICESat-2 L4 Monthly Gridded Sea Ice Thickness, Version 4 (IS2SITMOGR4) 1 November 2018 - 30 April 2025 ICE DEPTH/THICKNESS | SNOW DEPTH ICESat L4 Seasonal Gridded Sea Ice Thickness, Version 1 (ISSITGR4) 20 February 2003 - 21 March 2008 FREEBOARD | ICE DEPTH/THICKNESS | SNOW DEPTH CryoSat-2 Sea Ice Freeboard, Thickness, and Snow Depth Quick Look, Version 1 (NSIDC-0707) 1 March 2014 - 31 March 2014 1 March 2015 - 31 March 2015 FREEBOARD | ICE DEPTH/THICKNESS | ICE ROUGHNESS | SEA ICE CONCENTRATION | SNOW DENSITY | SNOW DEPTH ICESat-2 and CryoSat-2 L4 Monthly Arctic Snow Depth and Sea Ice Thickness, Version 1 (NSIDC-0773) 1 October 2018 - 30 April 2021 ICE DEPTH/THICKNESS | SNOW DEPTH CryoSat-2 Level-4 Sea Ice Elevation, Freeboard, and Thickness, Version 1 (RDEFT4) 20 September 2010 to present FREEBOARD | ICE DEPTH/THICKNESS | ICE ROUGHNESS | SEA ICE CONCENTRATION | SNOW DENSITY | SNOW DEPTH CryoSat-2 Level-1B Waveforms, Sea Ice Elevation, and Surface Roughness, Version 1 (RDWES1B) 15 September 2010 to present SEA ICE ELEVATION | SURFACE ROUGHNESS