IPY STG SAR Workshop Day 1 Summary

							      IPY STG SAR Workshop
          Day 1 Summary
• GIIPSY thematic science objectives
  presented along with a strawman
  acquisition strategy
• Agency representatives from ESA, DLR,
  CSA, NASA, reviewed IPY activities,
  capabilities and constraints. ASF provided
  information on behalf of JAXA.
• Ice Service operational requirements were
  reviewed
      IPY STG SAR Workshop
          Day 1 Summary
• Comparison of thematic objectives and agency
  activities showed:
  – Substantial L and C-band SAR imagery being
    acquired over Antarctica.
  – Substantial C-band data for InSAR is being acquired
    over Greenland, Antarctica, Iceland, Svalbard, Arctic
    ice caps. X-band coverage for topography and
    velocity is beginning. InSAR and image data gaps in
    the Antarctic ‘pole hole’
  – Extensive C-band SAR image data of Arctic and
    Antarctic Ice covered waters. Routine, robust, 3-6
    days repeat cycle image acquisitions are not
    systematically acquired over the entire Arctic basin.
    IPY STG SAR Workshop
      Day 1 Summary Cont
– Seasonal snow cover at high latitudes yet to be
  addressed in a comprehensive fashion – over
  supersites. X-Band contribution?
– C-band data for permafrost mapping likely to result
  from Envisat and R1 acquisition plans. Suggest a F1
  acquisition mission complementary to the F1
  coverage collected during the CIM – How about
  permafrost in Europe and Russia? How do you map
  permafrost change – support to science can be
  provided by space agencies
– Limited lake and river freeze up R1 data acquired by
  Canadian Ice Service – how can we expand?
        IPY STG SAR Workshop
              Data Gaps
• Coordinated Envisat/ERS/R1/TerraSAR observations
  could greatly increase Antarctic Insar coverage for ice
  sheet velocity from coast to pole.
• Complementary R1 and Envisat acquisitions could
  improve distribution of sea ice observations suitable for
  ice motion measurement.
• Reduced ground station support is a near term risk to
  IPY science community and sea ice operational
  communities
• L-band and RSAT1 coverage of Greenland and the
  Arctic Basin must be negotiated
• Large scale systematic X-band coverage of ice sheets
  and sea ice should be encouraged through a DLR IPY
  coordinated proposal.
           IPY STG SAR Workshop
             Action Items Day 1
•   Action Item 1: Request systematic ALOS coverage of Greenland (InSAR)
    and the Arctic basin. Request that JAXA continue polar observations
    beyond the conclusion of IPY as their capabilites and mandate permit. (KJ)
•   Provide similar refinement of acquisition plan to other space agencies (RK,
    IJ, KJ)
•   Action Item 2: Request CSA and NASA to explore near term (1 month)
    approaches for using R-1 during the IPY to cover areas of the Arctic where
    there are Envisat data gaps.
•   STG SAR coordination group to formulate a letter to be submitted to CSA,
    NASA external relations and MDA to avoid planning and data reception gap
    for RSAT 1 over both polar regions during IPY
•   Action Item 3: Submit recommendation for R2 background mission and
    Government Allocation acquisition complementary to existing archive for
    IPY and which supplement gaps in other existing systems and archival data
    sets (science community + YC, RSJ, GR, KW)
•   Action Item 4: Investigate possibilities for ENVISAT reception over Chukchi
    sea for IPY – Follow-on on discussions between ESA, ASF and KSAT for
    the reception during IPY
•   Action Item5: For the science community – to develop and submit a
    proposal to DLR for IPY related data acquisition
      IPY STG SAR Workshop
   Possible Approach for today

• Select 3-4 objectives that
  – Solve important, large scale science problem
  – Fills a gap in planned IPY coverage
  – Involves interagency collaboration
  – Agree on a list of recommendations to be
    submitted to STG3 for implementation
   Arctic Sea Ice Observations
• Construct a C-Band coverage (3-day
  snapshots) for the Arctic ocean during the
  remaining of IPY (background missions,
  operation data acquisitions, etc.)
  – Coordinate between CSA and ESA Mission
    Management desks to elaborate a plan within
    the constraints (RSJ, HL, DL)
  – Provide science requirements (RK)
    Antarctic Surface Velocity
• Winter Pole to Coast InSAR coverage of
  the Antarctic in high-res mode (3-4
  consecutive cycles in asc and desc)
  – Use the coverage of the Continental Margin
    already planned by ESA (slide 18)
  – RSAT2 background mission (Left looking)
    (KJ, IJ, GR, RSJ)
  – Pole hole mapping with Terrasar (KJ, IJ, DF)
  – 3-4 cycles of L-Band PALSAR
  – Provide science requirements (KJ, IJ)
    Arctic Glaciers, Ice Caps and
               Sheets
• Greenland and Major Canadian Icefields
  of InSAR acquisition over 3-4 consecutive
  cycles of high-res in winter
  – Large-scale synoptic acquisition plan to be
    assessed by ESA and CSA for C-Band
  – Suggesting improved L-Band coverage
  – Fast moving glaciers – showed in CNES
    presentation – suggested coverage by
    Terrasar (DF)
  – Provide science requirements (IJ)
        Science Super Sites
• Science community to identify supersites
  (look at what exist already) and determine
  acquisition parameters (frequency,
  resolution, etc.) for multi-pol and
  polarimetry data collection – for Jaxa, DLR
  and CSA to look at the possibility to
  program data acquisition
• Sea ice, snow water equivalent, glacier
  facies, permafrost
         Day 2 Action Item
• STG SAR coordination group to submit a
  letter to CSA, NASA, and MDA senior
  External Relations managers to ensure
  RSAT1 availability and avoid receptions
  gaps over the polar regions