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  1. ICESat-2 shall produce an ice surface elevation product that enables determination of ice-sheet elevation change rates to an accuracy of less than or equal to 0.4 cm/yr on an annual basis.
  2. ICESat-2 shall produce an ice surface elevation product that enables determination of annual surface elevation change rates on outlet glaciers to an accuracy of less than or equal to 0.25 m/yr over areas of 100 km2 for year-to-year averages.  
  3. ICESat-2 shall produce an ice surface elevation product that enables determination of surface elevation change rates for dynamic ice features that are intersected by its set of repeated ground-tracks to an accuracy of less than or equal to 0.4 m/yr along 1 kilometer track segments.
  4. ICESat-2 shall produce an ice surface elevation product that enables resolution of winter (accumulation) and summer (ablation) ice-sheet elevation change to 10 cm at 25 kilometer by 25 kilometer spatial scales.  
  5. ICESat-2 shall provide monthly surface elevation products to enable, when sea surface height references (leads) are available and under clear sky conditions, the determination of sea-ice freeboard to an uncertainty of less than or equal to 3 centimeters along 25 kilometer segments for the Arctic and Southern Oceans; the track spacing should be less than or equal to 35 kilometers at 70 degrees latitude on a monthly basis.
  6. ICESat-2 shall produce elevation measurements that enable independent determination of global vegetation height, with a ground track spacing of less than 2 kilometers over a 2-year period.
  7. The ICESat-2 Project shall conduct a calibration and validation program to verify delivered data meet the above requirements.