The 'CryoSat SciEnce-oriented data ANalysis over Sea-ICE areas' project ( CSN )

Assess the potential for ESA products improvements.

  • Quality of surface types in the products
  • Analysis of freeboard SNR (could come from computation and gridding methods)
  • Impact of Delay Doppler Processing options onto height and freeboard measurements
  • Snow cover impact on freeboard measurement
  • Assess the benefits of dual band (Ku/Ka) to better detect and account for Snow Depth (CryoVex/Karen spring 2017 campaign)
  • Check continuity issues :
    • Brownian WF (floes) and specular WF (leads) in a sequence,
    • off-nadir hookings (due to leads, polynyas, …)
    • side-lobe contamination effects
    • check the products at the pack ice - fast ice transitions

Corrective & New Approaches.

  • Geophysical retracking (CLS, SAMOSA+) to improve continuity over different surfaces (no threshold)
  • New freeboard computation techniques to be tested
  • SARIN mode freeboard prototyping
  • SARIN swath processing over sea-ice : theoretical and experimental aspects
  • New Metrics & Diagnostic Tools : detailed analysis of waveforms, stacks, radar chronograms also in combination with SAR images (Sentinel-1)

New Approaches / New Subjects.

  • Geophysical retracking : develop / test physical based retrackers for sea ice (improved space-time consistency : no space-time dependent threshold).
  • New Freeboard computation & Gridding methods.
  • Exploitation of Ku/Ka synergy (surface type, snow depth, freeboard) :
    • Cryovex Campaign data (concomitant acquisitions)
    • CryoSat-2 / SARAL crossings @ short time interval
    • Compare airborne vs spaceborne